./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:28:55,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:28:55,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:28:55,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:28:55,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:28:55,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:28:55,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:28:55,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:28:55,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:28:55,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:28:55,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:28:55,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:28:55,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:28:55,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:28:55,188 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:28:55,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:28:55,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:28:55,189 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:28:55,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:28:55,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:28:55,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:28:55,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:28:55,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:28:55,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:28:55,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:28:55,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:28:55,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:28:55,194 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:28:55,194 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:28:55,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:28:55,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:28:55,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:28:55,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:28:55,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:28:55,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:28:55,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:28:55,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:28:55,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:28:55,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:28:55,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:28:55,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:28:55,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:28:55,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-10 10:28:55,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:28:55,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:28:55,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:28:55,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:28:55,497 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:28:55,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-10 10:28:56,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:28:57,146 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:28:57,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-10 10:28:57,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58cb12261/fb126a3fcf404c428305857c6efe1738/FLAGad189c95b [2024-11-10 10:28:57,168 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58cb12261/fb126a3fcf404c428305857c6efe1738 [2024-11-10 10:28:57,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:28:57,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:28:57,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:28:57,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:28:57,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:28:57,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633e5414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57, skipping insertion in model container [2024-11-10 10:28:57,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,208 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:28:57,410 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c[2356,2369] [2024-11-10 10:28:57,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:28:57,430 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:28:57,452 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c[2356,2369] [2024-11-10 10:28:57,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:28:57,471 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:28:57,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57 WrapperNode [2024-11-10 10:28:57,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:28:57,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:28:57,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:28:57,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:28:57,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,514 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 158 [2024-11-10 10:28:57,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:28:57,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:28:57,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:28:57,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:28:57,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,554 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 10:28:57,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:28:57,566 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:28:57,566 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:28:57,566 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:28:57,567 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (1/1) ... [2024-11-10 10:28:57,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:28:57,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:57,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:28:57,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:28:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:28:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:28:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:28:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:28:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:28:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:28:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:28:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:28:57,677 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:28:57,813 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:28:57,816 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:28:58,212 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:28:58,212 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:28:58,497 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:28:58,497 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:28:58,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:58 BoogieIcfgContainer [2024-11-10 10:28:58,498 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:28:58,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:28:58,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:28:58,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:28:58,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:57" (1/3) ... [2024-11-10 10:28:58,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45096e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:58, skipping insertion in model container [2024-11-10 10:28:58,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:57" (2/3) ... [2024-11-10 10:28:58,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45096e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:58, skipping insertion in model container [2024-11-10 10:28:58,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:58" (3/3) ... [2024-11-10 10:28:58,510 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-10 10:28:58,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:28:58,527 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:28:58,527 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:28:58,577 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:28:58,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 62 flow [2024-11-10 10:28:58,652 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-10 10:28:58,653 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:28:58,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-10 10:28:58,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 62 flow [2024-11-10 10:28:58,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow [2024-11-10 10:28:58,670 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:28:58,677 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3faade42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:28:58,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:28:58,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:28:58,691 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events. [2024-11-10 10:28:58,691 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:28:58,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:58,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:58,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:58,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash 8943355, now seen corresponding path program 1 times [2024-11-10 10:28:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314603243] [2024-11-10 10:28:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:58,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:58,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314603243] [2024-11-10 10:28:58,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314603243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:58,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:58,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:28:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967732346] [2024-11-10 10:28:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:58,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:28:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:58,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:28:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:28:58,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:28:58,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:58,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:58,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:28:58,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:59,024 INFO L124 PetriNetUnfolderBase]: 37/76 cut-off events. [2024-11-10 10:28:59,024 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:28:59,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 76 events. 37/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 180 event pairs, 22 based on Foata normal form. 15/81 useless extension candidates. Maximal degree in co-relation 128. Up to 68 conditions per place. [2024-11-10 10:28:59,028 INFO L140 encePairwiseOnDemand]: 22/24 looper letters, 14 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-10 10:28:59,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 78 flow [2024-11-10 10:28:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:28:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:28:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 30 transitions. [2024-11-10 10:28:59,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-10 10:28:59,041 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 54 flow. Second operand 2 states and 30 transitions. [2024-11-10 10:28:59,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 78 flow [2024-11-10 10:28:59,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:28:59,045 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2024-11-10 10:28:59,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-11-10 10:28:59,052 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2024-11-10 10:28:59,052 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2024-11-10 10:28:59,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:59,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:59,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:59,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:28:59,054 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:59,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:59,055 INFO L85 PathProgramCache]: Analyzing trace with hash -758162235, now seen corresponding path program 1 times [2024-11-10 10:28:59,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:59,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801993983] [2024-11-10 10:28:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:59,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801993983] [2024-11-10 10:28:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801993983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:59,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:59,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:28:59,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137841512] [2024-11-10 10:28:59,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:59,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:59,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:28:59,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:59,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:59,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:28:59,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:59,665 INFO L124 PetriNetUnfolderBase]: 67/154 cut-off events. [2024-11-10 10:28:59,666 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:28:59,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 154 events. 67/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 545 event pairs, 11 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 286. Up to 72 conditions per place. [2024-11-10 10:28:59,668 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 26 selfloop transitions, 5 changer transitions 4/40 dead transitions. [2024-11-10 10:28:59,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 40 transitions, 160 flow [2024-11-10 10:28:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:28:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:28:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-10 10:28:59,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-11-10 10:28:59,673 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 5 states and 71 transitions. [2024-11-10 10:28:59,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 40 transitions, 160 flow [2024-11-10 10:28:59,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:28:59,677 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 76 flow [2024-11-10 10:28:59,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2024-11-10 10:28:59,681 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2024-11-10 10:28:59,681 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 76 flow [2024-11-10 10:28:59,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:59,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:59,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:59,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:28:59,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:28:59,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 330540489, now seen corresponding path program 2 times [2024-11-10 10:28:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:59,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174875213] [2024-11-10 10:28:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:28:59,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174875213] [2024-11-10 10:28:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174875213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:59,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:59,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:28:59,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575494919] [2024-11-10 10:28:59,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:59,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:59,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:59,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:28:59,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:28:59,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:59,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:28:59,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:00,132 INFO L124 PetriNetUnfolderBase]: 65/144 cut-off events. [2024-11-10 10:29:00,134 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-10 10:29:00,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 144 events. 65/144 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 488 event pairs, 17 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 351. Up to 72 conditions per place. [2024-11-10 10:29:00,138 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 22 selfloop transitions, 6 changer transitions 4/37 dead transitions. [2024-11-10 10:29:00,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 181 flow [2024-11-10 10:29:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:29:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:29:00,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-10 10:29:00,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-10 10:29:00,142 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 76 flow. Second operand 5 states and 67 transitions. [2024-11-10 10:29:00,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 181 flow [2024-11-10 10:29:00,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 179 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:00,146 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 108 flow [2024-11-10 10:29:00,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-11-10 10:29:00,148 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2024-11-10 10:29:00,149 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 108 flow [2024-11-10 10:29:00,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:00,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:00,149 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:00,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:29:00,150 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:00,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash 560198788, now seen corresponding path program 1 times [2024-11-10 10:29:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:00,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28650496] [2024-11-10 10:29:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28650496] [2024-11-10 10:29:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28650496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:00,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:00,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:00,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637499895] [2024-11-10 10:29:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:00,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:00,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:00,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:00,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:00,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:00,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:00,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:00,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:00,442 INFO L124 PetriNetUnfolderBase]: 153/286 cut-off events. [2024-11-10 10:29:00,442 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2024-11-10 10:29:00,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 286 events. 153/286 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1184 event pairs, 54 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 785. Up to 161 conditions per place. [2024-11-10 10:29:00,445 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 35 selfloop transitions, 13 changer transitions 6/57 dead transitions. [2024-11-10 10:29:00,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 346 flow [2024-11-10 10:29:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-11-10 10:29:00,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-11-10 10:29:00,447 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 108 flow. Second operand 6 states and 77 transitions. [2024-11-10 10:29:00,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 346 flow [2024-11-10 10:29:00,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 329 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-10 10:29:00,450 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 197 flow [2024-11-10 10:29:00,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-10 10:29:00,452 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2024-11-10 10:29:00,452 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 197 flow [2024-11-10 10:29:00,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:00,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:00,452 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:00,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:29:00,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:00,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2037118028, now seen corresponding path program 2 times [2024-11-10 10:29:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:00,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927439438] [2024-11-10 10:29:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:00,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927439438] [2024-11-10 10:29:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927439438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006485267] [2024-11-10 10:29:00,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:00,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:00,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:00,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:29:00,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:00,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:00,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:29:00,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:00,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:00,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006485267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:00,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:00,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-10 10:29:00,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116413117] [2024-11-10 10:29:00,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:00,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:29:00,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:00,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:29:00,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:29:00,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:00,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 197 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:00,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:00,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:00,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:00,910 INFO L124 PetriNetUnfolderBase]: 161/313 cut-off events. [2024-11-10 10:29:00,910 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-11-10 10:29:00,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 313 events. 161/313 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1319 event pairs, 32 based on Foata normal form. 7/312 useless extension candidates. Maximal degree in co-relation 1031. Up to 87 conditions per place. [2024-11-10 10:29:00,915 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 50 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2024-11-10 10:29:00,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 450 flow [2024-11-10 10:29:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-11-10 10:29:00,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-10 10:29:00,918 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 197 flow. Second operand 7 states and 88 transitions. [2024-11-10 10:29:00,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 450 flow [2024-11-10 10:29:00,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 448 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:00,926 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 261 flow [2024-11-10 10:29:00,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-10 10:29:00,928 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2024-11-10 10:29:00,928 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 261 flow [2024-11-10 10:29:00,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:00,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:00,930 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:00,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:29:01,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:01,131 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:01,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash 228365840, now seen corresponding path program 3 times [2024-11-10 10:29:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:01,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745141976] [2024-11-10 10:29:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:01,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:01,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745141976] [2024-11-10 10:29:01,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745141976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:01,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:01,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:01,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292893356] [2024-11-10 10:29:01,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:01,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:01,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:01,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:01,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:01,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:01,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:01,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:01,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:01,334 INFO L124 PetriNetUnfolderBase]: 189/368 cut-off events. [2024-11-10 10:29:01,334 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2024-11-10 10:29:01,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 368 events. 189/368 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1636 event pairs, 65 based on Foata normal form. 6/366 useless extension candidates. Maximal degree in co-relation 1387. Up to 218 conditions per place. [2024-11-10 10:29:01,339 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 33 selfloop transitions, 19 changer transitions 6/61 dead transitions. [2024-11-10 10:29:01,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 523 flow [2024-11-10 10:29:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-11-10 10:29:01,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-11-10 10:29:01,342 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 261 flow. Second operand 6 states and 71 transitions. [2024-11-10 10:29:01,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 523 flow [2024-11-10 10:29:01,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 490 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-10 10:29:01,351 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 382 flow [2024-11-10 10:29:01,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-11-10 10:29:01,352 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-11-10 10:29:01,353 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 382 flow [2024-11-10 10:29:01,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:01,354 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:01,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:29:01,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:01,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1227905326, now seen corresponding path program 4 times [2024-11-10 10:29:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:01,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892360232] [2024-11-10 10:29:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:01,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:01,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892360232] [2024-11-10 10:29:01,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892360232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:01,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:01,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:01,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18498013] [2024-11-10 10:29:01,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:01,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:01,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:01,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-10 10:29:01,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:01,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-10 10:29:01,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:01,552 INFO L124 PetriNetUnfolderBase]: 146/301 cut-off events. [2024-11-10 10:29:01,552 INFO L125 PetriNetUnfolderBase]: For 1361/1376 co-relation queries the response was YES. [2024-11-10 10:29:01,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 301 events. 146/301 cut-off events. For 1361/1376 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1330 event pairs, 43 based on Foata normal form. 5/289 useless extension candidates. Maximal degree in co-relation 1275. Up to 155 conditions per place. [2024-11-10 10:29:01,556 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 38 selfloop transitions, 14 changer transitions 9/68 dead transitions. [2024-11-10 10:29:01,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 619 flow [2024-11-10 10:29:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-10 10:29:01,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-11-10 10:29:01,558 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 382 flow. Second operand 7 states and 83 transitions. [2024-11-10 10:29:01,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 619 flow [2024-11-10 10:29:01,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 588 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:01,565 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 386 flow [2024-11-10 10:29:01,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2024-11-10 10:29:01,566 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 38 predicate places. [2024-11-10 10:29:01,566 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 386 flow [2024-11-10 10:29:01,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:01,566 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:01,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:29:01,567 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:01,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 195394622, now seen corresponding path program 5 times [2024-11-10 10:29:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:01,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959809425] [2024-11-10 10:29:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:01,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:01,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959809425] [2024-11-10 10:29:01,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959809425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:01,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221560902] [2024-11-10 10:29:01,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:01,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:01,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:01,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:01,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:29:01,706 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:01,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:01,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:29:01,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:01,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:01,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221560902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:01,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 10:29:01,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537510251] [2024-11-10 10:29:01,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:01,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:29:01,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:01,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:01,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:01,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:01,982 INFO L124 PetriNetUnfolderBase]: 193/383 cut-off events. [2024-11-10 10:29:01,982 INFO L125 PetriNetUnfolderBase]: For 1980/1983 co-relation queries the response was YES. [2024-11-10 10:29:01,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 383 events. 193/383 cut-off events. For 1980/1983 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1684 event pairs, 42 based on Foata normal form. 7/382 useless extension candidates. Maximal degree in co-relation 1671. Up to 145 conditions per place. [2024-11-10 10:29:01,987 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 53 selfloop transitions, 24 changer transitions 2/82 dead transitions. [2024-11-10 10:29:01,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 787 flow [2024-11-10 10:29:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-11-10 10:29:01,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-10 10:29:01,989 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 386 flow. Second operand 10 states and 112 transitions. [2024-11-10 10:29:01,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 787 flow [2024-11-10 10:29:01,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 742 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-10 10:29:01,997 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 484 flow [2024-11-10 10:29:01,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=484, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-10 10:29:01,999 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 42 predicate places. [2024-11-10 10:29:01,999 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 484 flow [2024-11-10 10:29:01,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:01,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:01,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:02,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:02,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-10 10:29:02,204 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:02,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1132999468, now seen corresponding path program 1 times [2024-11-10 10:29:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:02,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205331488] [2024-11-10 10:29:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:02,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:02,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205331488] [2024-11-10 10:29:02,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205331488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:02,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:02,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776323785] [2024-11-10 10:29:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:02,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:02,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:02,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-10 10:29:02,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:02,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:02,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-10 10:29:02,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:02,400 INFO L124 PetriNetUnfolderBase]: 153/330 cut-off events. [2024-11-10 10:29:02,400 INFO L125 PetriNetUnfolderBase]: For 1820/1856 co-relation queries the response was YES. [2024-11-10 10:29:02,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 330 events. 153/330 cut-off events. For 1820/1856 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1544 event pairs, 49 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1525. Up to 181 conditions per place. [2024-11-10 10:29:02,404 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 47 selfloop transitions, 12 changer transitions 11/75 dead transitions. [2024-11-10 10:29:02,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 727 flow [2024-11-10 10:29:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-10 10:29:02,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-10 10:29:02,406 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 484 flow. Second operand 7 states and 86 transitions. [2024-11-10 10:29:02,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 727 flow [2024-11-10 10:29:02,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 667 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-10 10:29:02,414 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 438 flow [2024-11-10 10:29:02,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2024-11-10 10:29:02,415 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2024-11-10 10:29:02,415 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 438 flow [2024-11-10 10:29:02,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:02,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:02,415 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:02,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:29:02,416 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:02,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash -377177938, now seen corresponding path program 2 times [2024-11-10 10:29:02,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:02,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548129774] [2024-11-10 10:29:02,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:02,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:02,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:02,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548129774] [2024-11-10 10:29:02,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548129774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:02,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540347903] [2024-11-10 10:29:02,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:02,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:02,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:02,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:02,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:29:02,554 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:02,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:02,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:29:02,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:02,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:02,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540347903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:02,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:02,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-10 10:29:02,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548051044] [2024-11-10 10:29:02,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:02,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:29:02,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:29:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:29:02,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:02,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:02,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:02,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:02,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:02,787 INFO L124 PetriNetUnfolderBase]: 194/380 cut-off events. [2024-11-10 10:29:02,787 INFO L125 PetriNetUnfolderBase]: For 2111/2111 co-relation queries the response was YES. [2024-11-10 10:29:02,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 380 events. 194/380 cut-off events. For 2111/2111 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1672 event pairs, 31 based on Foata normal form. 6/382 useless extension candidates. Maximal degree in co-relation 1738. Up to 115 conditions per place. [2024-11-10 10:29:02,791 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 54 selfloop transitions, 22 changer transitions 1/80 dead transitions. [2024-11-10 10:29:02,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 774 flow [2024-11-10 10:29:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-10 10:29:02,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-11-10 10:29:02,793 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 438 flow. Second operand 7 states and 83 transitions. [2024-11-10 10:29:02,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 774 flow [2024-11-10 10:29:02,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 728 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-10 10:29:02,800 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 506 flow [2024-11-10 10:29:02,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-10 10:29:02,801 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2024-11-10 10:29:02,802 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 506 flow [2024-11-10 10:29:02,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:02,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:02,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:02,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:29:03,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:03,004 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:03,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash 404513534, now seen corresponding path program 3 times [2024-11-10 10:29:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:03,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759001490] [2024-11-10 10:29:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:03,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:03,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759001490] [2024-11-10 10:29:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759001490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:03,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:03,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961062601] [2024-11-10 10:29:03,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:03,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:03,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:03,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:03,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:03,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:03,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:03,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:03,191 INFO L124 PetriNetUnfolderBase]: 195/385 cut-off events. [2024-11-10 10:29:03,192 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2024-11-10 10:29:03,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 385 events. 195/385 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1733 event pairs, 77 based on Foata normal form. 3/382 useless extension candidates. Maximal degree in co-relation 1848. Up to 266 conditions per place. [2024-11-10 10:29:03,195 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 14 changer transitions 8/68 dead transitions. [2024-11-10 10:29:03,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 734 flow [2024-11-10 10:29:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-11-10 10:29:03,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-11-10 10:29:03,197 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 506 flow. Second operand 6 states and 67 transitions. [2024-11-10 10:29:03,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 734 flow [2024-11-10 10:29:03,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 704 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:03,203 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 492 flow [2024-11-10 10:29:03,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-11-10 10:29:03,204 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2024-11-10 10:29:03,204 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 492 flow [2024-11-10 10:29:03,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:03,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:03,205 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:03,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 10:29:03,205 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:03,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2091074568, now seen corresponding path program 4 times [2024-11-10 10:29:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211301004] [2024-11-10 10:29:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211301004] [2024-11-10 10:29:03,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211301004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424364449] [2024-11-10 10:29:03,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:03,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:03,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:03,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:29:03,335 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:03,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:03,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:29:03,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:03,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:03,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424364449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:03,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:03,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 10:29:03,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95856636] [2024-11-10 10:29:03,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:03,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:29:03,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:03,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 492 flow. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:03,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:03,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:03,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:03,641 INFO L124 PetriNetUnfolderBase]: 197/384 cut-off events. [2024-11-10 10:29:03,641 INFO L125 PetriNetUnfolderBase]: For 2315/2315 co-relation queries the response was YES. [2024-11-10 10:29:03,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 384 events. 197/384 cut-off events. For 2315/2315 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1679 event pairs, 77 based on Foata normal form. 6/384 useless extension candidates. Maximal degree in co-relation 1847. Up to 272 conditions per place. [2024-11-10 10:29:03,650 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 47 selfloop transitions, 17 changer transitions 1/68 dead transitions. [2024-11-10 10:29:03,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 733 flow [2024-11-10 10:29:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-10 10:29:03,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-10 10:29:03,652 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 492 flow. Second operand 6 states and 68 transitions. [2024-11-10 10:29:03,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 733 flow [2024-11-10 10:29:03,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 697 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-10 10:29:03,659 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 535 flow [2024-11-10 10:29:03,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-10 10:29:03,661 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-11-10 10:29:03,661 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 535 flow [2024-11-10 10:29:03,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:03,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:03,661 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:03,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:03,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:03,864 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:03,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1069468802, now seen corresponding path program 6 times [2024-11-10 10:29:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:03,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672147636] [2024-11-10 10:29:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672147636] [2024-11-10 10:29:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672147636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900632430] [2024-11-10 10:29:03,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:03,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:03,940 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:03,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:29:04,005 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:29:04,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:04,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:29:04,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900632430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:04,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 10:29:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007456026] [2024-11-10 10:29:04,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:04,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:29:04,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:04,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 535 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:04,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:04,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:04,229 INFO L124 PetriNetUnfolderBase]: 177/347 cut-off events. [2024-11-10 10:29:04,229 INFO L125 PetriNetUnfolderBase]: For 2376/2384 co-relation queries the response was YES. [2024-11-10 10:29:04,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 347 events. 177/347 cut-off events. For 2376/2384 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1492 event pairs, 67 based on Foata normal form. 13/352 useless extension candidates. Maximal degree in co-relation 1700. Up to 234 conditions per place. [2024-11-10 10:29:04,234 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 20 changer transitions 2/68 dead transitions. [2024-11-10 10:29:04,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 734 flow [2024-11-10 10:29:04,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:04,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-10 10:29:04,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-10 10:29:04,235 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 535 flow. Second operand 6 states and 70 transitions. [2024-11-10 10:29:04,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 734 flow [2024-11-10 10:29:04,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 697 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-10 10:29:04,242 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 538 flow [2024-11-10 10:29:04,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-11-10 10:29:04,242 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-11-10 10:29:04,243 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 538 flow [2024-11-10 10:29:04,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:04,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:04,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:29:04,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 10:29:04,445 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:04,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash -136950346, now seen corresponding path program 5 times [2024-11-10 10:29:04,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404164803] [2024-11-10 10:29:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404164803] [2024-11-10 10:29:04,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404164803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640702614] [2024-11-10 10:29:04,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:04,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:04,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:04,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:29:04,558 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:04,558 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:04,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:29:04,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640702614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:04,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 10:29:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596583506] [2024-11-10 10:29:04,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:04,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:29:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:29:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:29:04,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:04,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:04,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:04,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:04,825 INFO L124 PetriNetUnfolderBase]: 165/333 cut-off events. [2024-11-10 10:29:04,825 INFO L125 PetriNetUnfolderBase]: For 1968/1968 co-relation queries the response was YES. [2024-11-10 10:29:04,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 333 events. 165/333 cut-off events. For 1968/1968 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1391 event pairs, 27 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1562. Up to 107 conditions per place. [2024-11-10 10:29:04,829 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 46 selfloop transitions, 31 changer transitions 1/81 dead transitions. [2024-11-10 10:29:04,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 848 flow [2024-11-10 10:29:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-11-10 10:29:04,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-10 10:29:04,830 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 538 flow. Second operand 10 states and 105 transitions. [2024-11-10 10:29:04,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 848 flow [2024-11-10 10:29:04,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 764 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:04,836 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 562 flow [2024-11-10 10:29:04,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=562, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-11-10 10:29:04,837 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2024-11-10 10:29:04,837 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 562 flow [2024-11-10 10:29:04,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:04,837 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:04,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:05,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:05,038 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:05,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash 56832638, now seen corresponding path program 6 times [2024-11-10 10:29:05,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:05,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004196656] [2024-11-10 10:29:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:05,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:05,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:05,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004196656] [2024-11-10 10:29:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004196656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:29:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227222478] [2024-11-10 10:29:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:05,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:29:05,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:29:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:29:05,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:05,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:05,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:05,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:05,194 INFO L124 PetriNetUnfolderBase]: 153/300 cut-off events. [2024-11-10 10:29:05,195 INFO L125 PetriNetUnfolderBase]: For 1677/1681 co-relation queries the response was YES. [2024-11-10 10:29:05,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 300 events. 153/300 cut-off events. For 1677/1681 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1227 event pairs, 50 based on Foata normal form. 7/300 useless extension candidates. Maximal degree in co-relation 1432. Up to 201 conditions per place. [2024-11-10 10:29:05,198 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 42 selfloop transitions, 17 changer transitions 5/67 dead transitions. [2024-11-10 10:29:05,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 67 transitions, 706 flow [2024-11-10 10:29:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:29:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:29:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-11-10 10:29:05,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-11-10 10:29:05,199 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 562 flow. Second operand 6 states and 62 transitions. [2024-11-10 10:29:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 67 transitions, 706 flow [2024-11-10 10:29:05,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 622 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:05,205 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 483 flow [2024-11-10 10:29:05,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-11-10 10:29:05,205 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2024-11-10 10:29:05,205 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 483 flow [2024-11-10 10:29:05,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:05,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:05,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:05,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 10:29:05,206 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:05,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:05,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1745520715, now seen corresponding path program 1 times [2024-11-10 10:29:05,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:05,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607618690] [2024-11-10 10:29:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:05,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607618690] [2024-11-10 10:29:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607618690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87208984] [2024-11-10 10:29:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:05,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:05,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:05,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:05,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:29:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:05,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:05,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:05,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:05,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87208984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:05,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 10:29:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156252058] [2024-11-10 10:29:05,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:05,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:29:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:29:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:29:05,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:29:05,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 483 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:05,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:05,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:29:05,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:06,113 INFO L124 PetriNetUnfolderBase]: 164/385 cut-off events. [2024-11-10 10:29:06,114 INFO L125 PetriNetUnfolderBase]: For 1808/1830 co-relation queries the response was YES. [2024-11-10 10:29:06,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 385 events. 164/385 cut-off events. For 1808/1830 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1825 event pairs, 13 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1628. Up to 180 conditions per place. [2024-11-10 10:29:06,119 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 19 changer transitions 4/95 dead transitions. [2024-11-10 10:29:06,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 894 flow [2024-11-10 10:29:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-11-10 10:29:06,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-10 10:29:06,120 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 483 flow. Second operand 7 states and 96 transitions. [2024-11-10 10:29:06,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 894 flow [2024-11-10 10:29:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 812 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:06,127 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 609 flow [2024-11-10 10:29:06,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-10 10:29:06,128 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-11-10 10:29:06,128 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 609 flow [2024-11-10 10:29:06,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:06,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:06,129 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:06,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 10:29:06,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:06,330 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:06,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash -785924823, now seen corresponding path program 2 times [2024-11-10 10:29:06,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:06,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254261343] [2024-11-10 10:29:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:06,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254261343] [2024-11-10 10:29:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254261343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:06,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636278047] [2024-11-10 10:29:06,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:06,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:06,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:06,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:29:06,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:06,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:06,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:06,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636278047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:06,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 10:29:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104970933] [2024-11-10 10:29:06,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:06,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:06,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:29:06,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 609 flow. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:06,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:06,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:29:06,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:07,122 INFO L124 PetriNetUnfolderBase]: 162/377 cut-off events. [2024-11-10 10:29:07,122 INFO L125 PetriNetUnfolderBase]: For 1971/1995 co-relation queries the response was YES. [2024-11-10 10:29:07,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 377 events. 162/377 cut-off events. For 1971/1995 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1782 event pairs, 13 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1678. Up to 180 conditions per place. [2024-11-10 10:29:07,127 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 65 selfloop transitions, 20 changer transitions 4/94 dead transitions. [2024-11-10 10:29:07,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 908 flow [2024-11-10 10:29:07,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-10 10:29:07,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-10 10:29:07,128 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 609 flow. Second operand 7 states and 94 transitions. [2024-11-10 10:29:07,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 908 flow [2024-11-10 10:29:07,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 94 transitions, 847 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:07,137 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 631 flow [2024-11-10 10:29:07,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=631, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-11-10 10:29:07,138 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 55 predicate places. [2024-11-10 10:29:07,138 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 631 flow [2024-11-10 10:29:07,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:07,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:07,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:07,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:07,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 10:29:07,340 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:07,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1739015511, now seen corresponding path program 3 times [2024-11-10 10:29:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:07,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172074773] [2024-11-10 10:29:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:07,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:07,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:07,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172074773] [2024-11-10 10:29:07,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172074773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:07,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893858267] [2024-11-10 10:29:07,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:07,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:07,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:07,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:07,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:29:07,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:29:07,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:07,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:07,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:07,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:07,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893858267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:07,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:07,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-10 10:29:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808819749] [2024-11-10 10:29:07,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:07,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:07,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:29:07,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 631 flow. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:07,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:07,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:29:07,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:08,155 INFO L124 PetriNetUnfolderBase]: 161/370 cut-off events. [2024-11-10 10:29:08,155 INFO L125 PetriNetUnfolderBase]: For 1941/1967 co-relation queries the response was YES. [2024-11-10 10:29:08,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 370 events. 161/370 cut-off events. For 1941/1967 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1756 event pairs, 13 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1637. Up to 200 conditions per place. [2024-11-10 10:29:08,159 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 65 selfloop transitions, 20 changer transitions 4/94 dead transitions. [2024-11-10 10:29:08,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 94 transitions, 922 flow [2024-11-10 10:29:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-10 10:29:08,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-10 10:29:08,160 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 631 flow. Second operand 7 states and 91 transitions. [2024-11-10 10:29:08,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 94 transitions, 922 flow [2024-11-10 10:29:08,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 877 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:08,166 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 701 flow [2024-11-10 10:29:08,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=701, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-11-10 10:29:08,167 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 59 predicate places. [2024-11-10 10:29:08,167 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 701 flow [2024-11-10 10:29:08,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:08,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:08,167 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:08,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:08,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 10:29:08,368 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:08,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1607993295, now seen corresponding path program 4 times [2024-11-10 10:29:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:08,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526088674] [2024-11-10 10:29:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:08,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:08,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526088674] [2024-11-10 10:29:08,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526088674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266254684] [2024-11-10 10:29:08,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:08,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:08,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:29:08,587 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:08,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:08,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:08,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:08,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:08,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266254684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:08,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:08,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 10:29:08,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924843281] [2024-11-10 10:29:08,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:08,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:08,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:29:08,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 701 flow. Second operand has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:08,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:08,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:29:08,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:09,098 INFO L124 PetriNetUnfolderBase]: 198/462 cut-off events. [2024-11-10 10:29:09,098 INFO L125 PetriNetUnfolderBase]: For 2440/2475 co-relation queries the response was YES. [2024-11-10 10:29:09,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 462 events. 198/462 cut-off events. For 2440/2475 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2409 event pairs, 14 based on Foata normal form. 5/463 useless extension candidates. Maximal degree in co-relation 2081. Up to 270 conditions per place. [2024-11-10 10:29:09,103 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 80 selfloop transitions, 19 changer transitions 4/108 dead transitions. [2024-11-10 10:29:09,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 1118 flow [2024-11-10 10:29:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-10 10:29:09,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-10 10:29:09,104 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 701 flow. Second operand 7 states and 90 transitions. [2024-11-10 10:29:09,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 1118 flow [2024-11-10 10:29:09,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 108 transitions, 1084 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:09,111 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 863 flow [2024-11-10 10:29:09,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2024-11-10 10:29:09,112 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 64 predicate places. [2024-11-10 10:29:09,112 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 863 flow [2024-11-10 10:29:09,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:09,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:09,112 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:09,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:09,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:09,313 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:09,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash -87342619, now seen corresponding path program 5 times [2024-11-10 10:29:09,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:09,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063834470] [2024-11-10 10:29:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:09,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:09,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063834470] [2024-11-10 10:29:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063834470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:09,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374035987] [2024-11-10 10:29:09,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:09,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:09,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:09,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:09,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:29:09,571 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:09,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:09,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:09,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:09,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:09,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374035987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:09,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:09,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 10:29:09,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507412208] [2024-11-10 10:29:09,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:09,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:29:09,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:29:09,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:29:09,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:29:09,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 863 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:09,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:09,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:29:09,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:10,113 INFO L124 PetriNetUnfolderBase]: 198/468 cut-off events. [2024-11-10 10:29:10,114 INFO L125 PetriNetUnfolderBase]: For 2810/2845 co-relation queries the response was YES. [2024-11-10 10:29:10,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 468 events. 198/468 cut-off events. For 2810/2845 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2438 event pairs, 14 based on Foata normal form. 5/469 useless extension candidates. Maximal degree in co-relation 2206. Up to 272 conditions per place. [2024-11-10 10:29:10,119 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 80 selfloop transitions, 20 changer transitions 4/109 dead transitions. [2024-11-10 10:29:10,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 109 transitions, 1191 flow [2024-11-10 10:29:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-10 10:29:10,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-10 10:29:10,122 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 863 flow. Second operand 7 states and 90 transitions. [2024-11-10 10:29:10,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 109 transitions, 1191 flow [2024-11-10 10:29:10,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 109 transitions, 1142 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-10 10:29:10,132 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 903 flow [2024-11-10 10:29:10,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-11-10 10:29:10,132 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2024-11-10 10:29:10,132 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 903 flow [2024-11-10 10:29:10,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:10,133 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:10,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 10:29:10,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:10,334 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:10,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2028938391, now seen corresponding path program 6 times [2024-11-10 10:29:10,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:10,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731868102] [2024-11-10 10:29:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731868102] [2024-11-10 10:29:10,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731868102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665017430] [2024-11-10 10:29:10,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:10,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:10,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:10,513 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:10,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:29:10,574 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 10:29:10,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:10,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:10,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:10,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665017430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:10,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:10,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-10 10:29:10,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787039581] [2024-11-10 10:29:10,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:10,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:10,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:10,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:10,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:29:10,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 903 flow. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:10,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:29:10,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:11,151 INFO L124 PetriNetUnfolderBase]: 197/461 cut-off events. [2024-11-10 10:29:11,152 INFO L125 PetriNetUnfolderBase]: For 2807/2846 co-relation queries the response was YES. [2024-11-10 10:29:11,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 461 events. 197/461 cut-off events. For 2807/2846 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2398 event pairs, 14 based on Foata normal form. 9/466 useless extension candidates. Maximal degree in co-relation 2204. Up to 286 conditions per place. [2024-11-10 10:29:11,157 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 78 selfloop transitions, 20 changer transitions 4/107 dead transitions. [2024-11-10 10:29:11,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 1200 flow [2024-11-10 10:29:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:11,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-11-10 10:29:11,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-10 10:29:11,158 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 903 flow. Second operand 7 states and 85 transitions. [2024-11-10 10:29:11,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 1200 flow [2024-11-10 10:29:11,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 107 transitions, 1157 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:11,168 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 973 flow [2024-11-10 10:29:11,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=973, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-11-10 10:29:11,169 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 74 predicate places. [2024-11-10 10:29:11,169 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 973 flow [2024-11-10 10:29:11,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:11,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:11,170 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:11,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:11,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 10:29:11,370 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:11,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash -562905444, now seen corresponding path program 7 times [2024-11-10 10:29:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639214083] [2024-11-10 10:29:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:11,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639214083] [2024-11-10 10:29:11,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639214083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:11,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273091927] [2024-11-10 10:29:11,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:11,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:11,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:11,445 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) [2024-11-10 10:29:11,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 10:29:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:11,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:11,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273091927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:11,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:11,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-10 10:29:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549253948] [2024-11-10 10:29:11,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:11,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:29:11,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:29:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:29:11,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:11,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 973 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:11,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:11,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:11,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:11,908 INFO L124 PetriNetUnfolderBase]: 341/675 cut-off events. [2024-11-10 10:29:11,908 INFO L125 PetriNetUnfolderBase]: For 4154/4154 co-relation queries the response was YES. [2024-11-10 10:29:11,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3343 conditions, 675 events. 341/675 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3522 event pairs, 50 based on Foata normal form. 7/677 useless extension candidates. Maximal degree in co-relation 3305. Up to 164 conditions per place. [2024-11-10 10:29:11,915 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 51 changer transitions 0/143 dead transitions. [2024-11-10 10:29:11,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 143 transitions, 1602 flow [2024-11-10 10:29:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-11-10 10:29:11,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-11-10 10:29:11,916 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 973 flow. Second operand 10 states and 119 transitions. [2024-11-10 10:29:11,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 143 transitions, 1602 flow [2024-11-10 10:29:11,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 143 transitions, 1564 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:11,930 INFO L231 Difference]: Finished difference. Result has 109 places, 105 transitions, 1240 flow [2024-11-10 10:29:11,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1240, PETRI_PLACES=109, PETRI_TRANSITIONS=105} [2024-11-10 10:29:11,931 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 85 predicate places. [2024-11-10 10:29:11,931 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 105 transitions, 1240 flow [2024-11-10 10:29:11,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:11,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:11,932 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:11,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 10:29:12,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-10 10:29:12,133 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:12,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1212689778, now seen corresponding path program 8 times [2024-11-10 10:29:12,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:12,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020059335] [2024-11-10 10:29:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:12,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020059335] [2024-11-10 10:29:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020059335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502138241] [2024-11-10 10:29:12,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:12,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:12,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:12,222 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) [2024-11-10 10:29:12,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 10:29:12,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:12,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:12,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:12,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:12,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502138241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:12,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 10:29:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674192548] [2024-11-10 10:29:12,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:12,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:12,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:12,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:12,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 1240 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) [2024-11-10 10:29:12,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:12,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:12,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:12,761 INFO L124 PetriNetUnfolderBase]: 410/809 cut-off events. [2024-11-10 10:29:12,762 INFO L125 PetriNetUnfolderBase]: For 8857/8857 co-relation queries the response was YES. [2024-11-10 10:29:12,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 809 events. 410/809 cut-off events. For 8857/8857 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4305 event pairs, 62 based on Foata normal form. 27/831 useless extension candidates. Maximal degree in co-relation 4518. Up to 284 conditions per place. [2024-11-10 10:29:12,771 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 91 selfloop transitions, 70 changer transitions 0/164 dead transitions. [2024-11-10 10:29:12,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 164 transitions, 2148 flow [2024-11-10 10:29:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:29:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:29:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-10 10:29:12,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-10 10:29:12,774 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 1240 flow. Second operand 15 states and 159 transitions. [2024-11-10 10:29:12,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 164 transitions, 2148 flow [2024-11-10 10:29:12,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 164 transitions, 1982 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-11-10 10:29:12,798 INFO L231 Difference]: Finished difference. Result has 129 places, 132 transitions, 1723 flow [2024-11-10 10:29:12,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1723, PETRI_PLACES=129, PETRI_TRANSITIONS=132} [2024-11-10 10:29:12,799 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 105 predicate places. [2024-11-10 10:29:12,799 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 132 transitions, 1723 flow [2024-11-10 10:29:12,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:12,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:12,800 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:12,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:13,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:13,004 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:13,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash -701526148, now seen corresponding path program 9 times [2024-11-10 10:29:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992725871] [2024-11-10 10:29:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:13,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992725871] [2024-11-10 10:29:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992725871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135579306] [2024-11-10 10:29:13,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:13,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:13,076 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) [2024-11-10 10:29:13,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 10:29:13,143 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:29:13,144 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:13,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:13,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:13,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:13,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135579306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:13,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:13,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:29:13,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767892031] [2024-11-10 10:29:13,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:13,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:13,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:13,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 132 transitions, 1723 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:13,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:13,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:13,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:13,735 INFO L124 PetriNetUnfolderBase]: 522/1016 cut-off events. [2024-11-10 10:29:13,735 INFO L125 PetriNetUnfolderBase]: For 18038/18038 co-relation queries the response was YES. [2024-11-10 10:29:13,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6536 conditions, 1016 events. 522/1016 cut-off events. For 18038/18038 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5561 event pairs, 54 based on Foata normal form. 18/1025 useless extension candidates. Maximal degree in co-relation 6484. Up to 268 conditions per place. [2024-11-10 10:29:13,749 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 96 selfloop transitions, 105 changer transitions 0/204 dead transitions. [2024-11-10 10:29:13,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 204 transitions, 2956 flow [2024-11-10 10:29:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:29:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:29:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 178 transitions. [2024-11-10 10:29:13,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-11-10 10:29:13,750 INFO L175 Difference]: Start difference. First operand has 129 places, 132 transitions, 1723 flow. Second operand 16 states and 178 transitions. [2024-11-10 10:29:13,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 204 transitions, 2956 flow [2024-11-10 10:29:13,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 204 transitions, 2700 flow, removed 119 selfloop flow, removed 3 redundant places. [2024-11-10 10:29:13,793 INFO L231 Difference]: Finished difference. Result has 149 places, 166 transitions, 2337 flow [2024-11-10 10:29:13,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2337, PETRI_PLACES=149, PETRI_TRANSITIONS=166} [2024-11-10 10:29:13,793 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 125 predicate places. [2024-11-10 10:29:13,793 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 166 transitions, 2337 flow [2024-11-10 10:29:13,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:13,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:13,794 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:13,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:13,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:13,999 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:13,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:13,999 INFO L85 PathProgramCache]: Analyzing trace with hash -168224280, now seen corresponding path program 10 times [2024-11-10 10:29:13,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:13,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597564836] [2024-11-10 10:29:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:13,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597564836] [2024-11-10 10:29:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597564836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635031267] [2024-11-10 10:29:14,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:14,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:14,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:14,081 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) [2024-11-10 10:29:14,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 10:29:14,147 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:14,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:14,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:14,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:14,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635031267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:14,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:14,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:29:14,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797301499] [2024-11-10 10:29:14,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:14,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:14,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:14,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:14,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 166 transitions, 2337 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:14,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:14,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:14,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:14,809 INFO L124 PetriNetUnfolderBase]: 532/1050 cut-off events. [2024-11-10 10:29:14,809 INFO L125 PetriNetUnfolderBase]: For 23849/23849 co-relation queries the response was YES. [2024-11-10 10:29:14,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1050 events. 532/1050 cut-off events. For 23849/23849 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5863 event pairs, 60 based on Foata normal form. 8/1049 useless extension candidates. Maximal degree in co-relation 7372. Up to 305 conditions per place. [2024-11-10 10:29:14,832 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 110 selfloop transitions, 129 changer transitions 11/253 dead transitions. [2024-11-10 10:29:14,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 253 transitions, 4003 flow [2024-11-10 10:29:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 10:29:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-10 10:29:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 200 transitions. [2024-11-10 10:29:14,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-10 10:29:14,835 INFO L175 Difference]: Start difference. First operand has 149 places, 166 transitions, 2337 flow. Second operand 20 states and 200 transitions. [2024-11-10 10:29:14,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 253 transitions, 4003 flow [2024-11-10 10:29:14,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 253 transitions, 3628 flow, removed 125 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:14,891 INFO L231 Difference]: Finished difference. Result has 166 places, 208 transitions, 3027 flow [2024-11-10 10:29:14,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3027, PETRI_PLACES=166, PETRI_TRANSITIONS=208} [2024-11-10 10:29:14,892 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 142 predicate places. [2024-11-10 10:29:14,892 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 208 transitions, 3027 flow [2024-11-10 10:29:14,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:14,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:14,893 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:14,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:15,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 10:29:15,094 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:15,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash -647844416, now seen corresponding path program 11 times [2024-11-10 10:29:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997506703] [2024-11-10 10:29:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:15,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997506703] [2024-11-10 10:29:15,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997506703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:15,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974042006] [2024-11-10 10:29:15,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:15,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:15,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:15,183 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:15,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 10:29:15,249 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 10:29:15,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:15,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:15,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:15,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:15,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974042006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:15,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:15,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 10:29:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201680201] [2024-11-10 10:29:15,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:15,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:29:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:29:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:15,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:15,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 208 transitions, 3027 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 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) [2024-11-10 10:29:15,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:15,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:15,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:16,068 INFO L124 PetriNetUnfolderBase]: 729/1425 cut-off events. [2024-11-10 10:29:16,068 INFO L125 PetriNetUnfolderBase]: For 31710/31713 co-relation queries the response was YES. [2024-11-10 10:29:16,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10231 conditions, 1425 events. 729/1425 cut-off events. For 31710/31713 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8361 event pairs, 60 based on Foata normal form. 14/1432 useless extension candidates. Maximal degree in co-relation 10165. Up to 376 conditions per place. [2024-11-10 10:29:16,087 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 146 selfloop transitions, 205 changer transitions 0/354 dead transitions. [2024-11-10 10:29:16,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 354 transitions, 5671 flow [2024-11-10 10:29:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:29:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:29:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 233 transitions. [2024-11-10 10:29:16,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4221014492753623 [2024-11-10 10:29:16,089 INFO L175 Difference]: Start difference. First operand has 166 places, 208 transitions, 3027 flow. Second operand 23 states and 233 transitions. [2024-11-10 10:29:16,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 354 transitions, 5671 flow [2024-11-10 10:29:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 354 transitions, 5264 flow, removed 141 selfloop flow, removed 6 redundant places. [2024-11-10 10:29:16,187 INFO L231 Difference]: Finished difference. Result has 188 places, 301 transitions, 4805 flow [2024-11-10 10:29:16,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4805, PETRI_PLACES=188, PETRI_TRANSITIONS=301} [2024-11-10 10:29:16,188 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 164 predicate places. [2024-11-10 10:29:16,188 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 301 transitions, 4805 flow [2024-11-10 10:29:16,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 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) [2024-11-10 10:29:16,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:16,188 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:16,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:16,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-10 10:29:16,389 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:16,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1091120042, now seen corresponding path program 12 times [2024-11-10 10:29:16,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:16,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310356850] [2024-11-10 10:29:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:16,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310356850] [2024-11-10 10:29:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310356850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832532549] [2024-11-10 10:29:16,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:16,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:16,468 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:16,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 10:29:16,527 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-10 10:29:16,527 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:16,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:16,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:16,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832532549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:16,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:16,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-10 10:29:16,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157926345] [2024-11-10 10:29:16,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:16,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:16,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:16,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:16,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:16,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 301 transitions, 4805 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:16,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:16,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:16,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:17,178 INFO L124 PetriNetUnfolderBase]: 895/1702 cut-off events. [2024-11-10 10:29:17,178 INFO L125 PetriNetUnfolderBase]: For 51632/51632 co-relation queries the response was YES. [2024-11-10 10:29:17,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13292 conditions, 1702 events. 895/1702 cut-off events. For 51632/51632 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10139 event pairs, 68 based on Foata normal form. 14/1706 useless extension candidates. Maximal degree in co-relation 13220. Up to 431 conditions per place. [2024-11-10 10:29:17,195 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 138 selfloop transitions, 250 changer transitions 0/391 dead transitions. [2024-11-10 10:29:17,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 391 transitions, 6992 flow [2024-11-10 10:29:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:29:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:29:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions. [2024-11-10 10:29:17,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2024-11-10 10:29:17,197 INFO L175 Difference]: Start difference. First operand has 188 places, 301 transitions, 4805 flow. Second operand 17 states and 189 transitions. [2024-11-10 10:29:17,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 391 transitions, 6992 flow [2024-11-10 10:29:17,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 391 transitions, 6700 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:17,300 INFO L231 Difference]: Finished difference. Result has 204 places, 348 transitions, 6209 flow [2024-11-10 10:29:17,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6209, PETRI_PLACES=204, PETRI_TRANSITIONS=348} [2024-11-10 10:29:17,301 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 180 predicate places. [2024-11-10 10:29:17,301 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 348 transitions, 6209 flow [2024-11-10 10:29:17,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:17,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:17,301 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:17,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:17,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-10 10:29:17,502 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:17,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1515230590, now seen corresponding path program 13 times [2024-11-10 10:29:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:17,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101765028] [2024-11-10 10:29:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:17,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:17,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101765028] [2024-11-10 10:29:17,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101765028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:17,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799492665] [2024-11-10 10:29:17,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:17,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:17,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:17,575 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:17,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 10:29:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:17,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:17,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:17,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:17,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799492665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:17,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:17,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 10:29:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015057122] [2024-11-10 10:29:17,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:17,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:29:17,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:29:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:17,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:17,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 348 transitions, 6209 flow. Second operand has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 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) [2024-11-10 10:29:17,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:17,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:18,336 INFO L124 PetriNetUnfolderBase]: 987/1876 cut-off events. [2024-11-10 10:29:18,337 INFO L125 PetriNetUnfolderBase]: For 72172/72175 co-relation queries the response was YES. [2024-11-10 10:29:18,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16393 conditions, 1876 events. 987/1876 cut-off events. For 72172/72175 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11426 event pairs, 89 based on Foata normal form. 16/1887 useless extension candidates. Maximal degree in co-relation 16312. Up to 542 conditions per place. [2024-11-10 10:29:18,360 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 166 selfloop transitions, 256 changer transitions 22/447 dead transitions. [2024-11-10 10:29:18,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 447 transitions, 8938 flow [2024-11-10 10:29:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 10:29:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 10:29:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 245 transitions. [2024-11-10 10:29:18,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-11-10 10:29:18,362 INFO L175 Difference]: Start difference. First operand has 204 places, 348 transitions, 6209 flow. Second operand 25 states and 245 transitions. [2024-11-10 10:29:18,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 447 transitions, 8938 flow [2024-11-10 10:29:18,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 447 transitions, 8488 flow, removed 205 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:18,661 INFO L231 Difference]: Finished difference. Result has 238 places, 385 transitions, 7506 flow [2024-11-10 10:29:18,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5911, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7506, PETRI_PLACES=238, PETRI_TRANSITIONS=385} [2024-11-10 10:29:18,662 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 214 predicate places. [2024-11-10 10:29:18,662 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 385 transitions, 7506 flow [2024-11-10 10:29:18,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 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) [2024-11-10 10:29:18,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:18,662 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:18,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:18,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:18,864 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:18,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash 860038060, now seen corresponding path program 14 times [2024-11-10 10:29:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48670057] [2024-11-10 10:29:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48670057] [2024-11-10 10:29:18,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48670057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970886418] [2024-11-10 10:29:18,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:18,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:18,940 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:18,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 10:29:19,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:19,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:19,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:19,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:19,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:19,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970886418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:19,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:19,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:29:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189758566] [2024-11-10 10:29:19,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:19,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:19,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:19,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:19,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 385 transitions, 7506 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:19,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:19,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:19,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:19,784 INFO L124 PetriNetUnfolderBase]: 1185/2181 cut-off events. [2024-11-10 10:29:19,784 INFO L125 PetriNetUnfolderBase]: For 113184/113184 co-relation queries the response was YES. [2024-11-10 10:29:19,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21494 conditions, 2181 events. 1185/2181 cut-off events. For 113184/113184 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13401 event pairs, 248 based on Foata normal form. 22/2196 useless extension candidates. Maximal degree in co-relation 21398. Up to 1343 conditions per place. [2024-11-10 10:29:19,818 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 359 selfloop transitions, 155 changer transitions 0/517 dead transitions. [2024-11-10 10:29:19,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 517 transitions, 11345 flow [2024-11-10 10:29:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:29:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:29:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-11-10 10:29:19,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-11-10 10:29:19,820 INFO L175 Difference]: Start difference. First operand has 238 places, 385 transitions, 7506 flow. Second operand 16 states and 173 transitions. [2024-11-10 10:29:19,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 517 transitions, 11345 flow [2024-11-10 10:29:20,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 517 transitions, 10719 flow, removed 219 selfloop flow, removed 11 redundant places. [2024-11-10 10:29:20,203 INFO L231 Difference]: Finished difference. Result has 242 places, 464 transitions, 9359 flow [2024-11-10 10:29:20,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7078, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9359, PETRI_PLACES=242, PETRI_TRANSITIONS=464} [2024-11-10 10:29:20,204 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 218 predicate places. [2024-11-10 10:29:20,204 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 464 transitions, 9359 flow [2024-11-10 10:29:20,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:20,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:20,204 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:20,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 10:29:20,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 10:29:20,405 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:20,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1921737740, now seen corresponding path program 15 times [2024-11-10 10:29:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:20,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767453734] [2024-11-10 10:29:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767453734] [2024-11-10 10:29:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767453734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822093363] [2024-11-10 10:29:20,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:20,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:20,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:20,507 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:20,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 10:29:20,570 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:29:20,570 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:20,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:20,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:20,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822093363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:20,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:20,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-10 10:29:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472617107] [2024-11-10 10:29:20,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:20,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:29:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:29:20,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:29:20,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:20,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 464 transitions, 9359 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:20,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:20,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:20,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:21,304 INFO L124 PetriNetUnfolderBase]: 1193/2199 cut-off events. [2024-11-10 10:29:21,304 INFO L125 PetriNetUnfolderBase]: For 119693/119693 co-relation queries the response was YES. [2024-11-10 10:29:21,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22268 conditions, 2199 events. 1193/2199 cut-off events. For 119693/119693 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13466 event pairs, 213 based on Foata normal form. 8/2200 useless extension candidates. Maximal degree in co-relation 22170. Up to 1214 conditions per place. [2024-11-10 10:29:21,336 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 411 selfloop transitions, 138 changer transitions 23/575 dead transitions. [2024-11-10 10:29:21,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 575 transitions, 12652 flow [2024-11-10 10:29:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:29:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:29:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-11-10 10:29:21,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-11-10 10:29:21,338 INFO L175 Difference]: Start difference. First operand has 242 places, 464 transitions, 9359 flow. Second operand 15 states and 154 transitions. [2024-11-10 10:29:21,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 575 transitions, 12652 flow [2024-11-10 10:29:21,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 575 transitions, 11979 flow, removed 186 selfloop flow, removed 10 redundant places. [2024-11-10 10:29:21,680 INFO L231 Difference]: Finished difference. Result has 252 places, 490 transitions, 9839 flow [2024-11-10 10:29:21,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8856, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9839, PETRI_PLACES=252, PETRI_TRANSITIONS=490} [2024-11-10 10:29:21,680 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 228 predicate places. [2024-11-10 10:29:21,681 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 490 transitions, 9839 flow [2024-11-10 10:29:21,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:21,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:21,681 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:21,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:21,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:21,882 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:21,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash 126545514, now seen corresponding path program 16 times [2024-11-10 10:29:21,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:21,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953538585] [2024-11-10 10:29:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:21,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953538585] [2024-11-10 10:29:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953538585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457606161] [2024-11-10 10:29:21,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:21,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:21,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:21,951 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:21,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 10:29:22,007 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:22,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:22,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:22,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:22,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:22,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457606161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:22,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:22,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 10:29:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518712638] [2024-11-10 10:29:22,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:22,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:22,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:22,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 490 transitions, 9839 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:22,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:22,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:22,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:22,911 INFO L124 PetriNetUnfolderBase]: 1231/2283 cut-off events. [2024-11-10 10:29:22,911 INFO L125 PetriNetUnfolderBase]: For 125994/125994 co-relation queries the response was YES. [2024-11-10 10:29:22,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23022 conditions, 2283 events. 1231/2283 cut-off events. For 125994/125994 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14298 event pairs, 218 based on Foata normal form. 17/2293 useless extension candidates. Maximal degree in co-relation 22920. Up to 1292 conditions per place. [2024-11-10 10:29:22,957 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 402 selfloop transitions, 174 changer transitions 14/593 dead transitions. [2024-11-10 10:29:22,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 593 transitions, 12905 flow [2024-11-10 10:29:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:29:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:29:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 213 transitions. [2024-11-10 10:29:22,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-11-10 10:29:22,958 INFO L175 Difference]: Start difference. First operand has 252 places, 490 transitions, 9839 flow. Second operand 22 states and 213 transitions. [2024-11-10 10:29:22,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 593 transitions, 12905 flow [2024-11-10 10:29:23,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 593 transitions, 12001 flow, removed 352 selfloop flow, removed 8 redundant places. [2024-11-10 10:29:23,296 INFO L231 Difference]: Finished difference. Result has 269 places, 514 transitions, 10344 flow [2024-11-10 10:29:23,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9254, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=10344, PETRI_PLACES=269, PETRI_TRANSITIONS=514} [2024-11-10 10:29:23,296 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 245 predicate places. [2024-11-10 10:29:23,296 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 514 transitions, 10344 flow [2024-11-10 10:29:23,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:23,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:23,297 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:23,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:23,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:23,497 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:23,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash 839084516, now seen corresponding path program 17 times [2024-11-10 10:29:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434511976] [2024-11-10 10:29:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:23,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434511976] [2024-11-10 10:29:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434511976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183677599] [2024-11-10 10:29:23,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:23,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:23,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:23,589 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:23,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 10:29:23,652 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 10:29:23,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:23,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:23,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:23,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:23,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183677599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:23,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:23,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:29:23,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743453121] [2024-11-10 10:29:23,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:23,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:23,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:23,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:23,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:23,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 514 transitions, 10344 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:23,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:23,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:23,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:24,381 INFO L124 PetriNetUnfolderBase]: 1172/2176 cut-off events. [2024-11-10 10:29:24,381 INFO L125 PetriNetUnfolderBase]: For 90533/90533 co-relation queries the response was YES. [2024-11-10 10:29:24,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20758 conditions, 2176 events. 1172/2176 cut-off events. For 90533/90533 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 13401 event pairs, 185 based on Foata normal form. 25/2194 useless extension candidates. Maximal degree in co-relation 20655. Up to 1131 conditions per place. [2024-11-10 10:29:24,408 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 350 selfloop transitions, 213 changer transitions 5/571 dead transitions. [2024-11-10 10:29:24,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 571 transitions, 12382 flow [2024-11-10 10:29:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 10:29:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 10:29:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 197 transitions. [2024-11-10 10:29:24,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43201754385964913 [2024-11-10 10:29:24,409 INFO L175 Difference]: Start difference. First operand has 269 places, 514 transitions, 10344 flow. Second operand 19 states and 197 transitions. [2024-11-10 10:29:24,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 571 transitions, 12382 flow [2024-11-10 10:29:24,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 571 transitions, 12020 flow, removed 86 selfloop flow, removed 10 redundant places. [2024-11-10 10:29:24,702 INFO L231 Difference]: Finished difference. Result has 276 places, 509 transitions, 10588 flow [2024-11-10 10:29:24,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9523, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10588, PETRI_PLACES=276, PETRI_TRANSITIONS=509} [2024-11-10 10:29:24,702 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 252 predicate places. [2024-11-10 10:29:24,703 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 509 transitions, 10588 flow [2024-11-10 10:29:24,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:24,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:24,703 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:24,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:24,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:24,904 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:24,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash -24412978, now seen corresponding path program 18 times [2024-11-10 10:29:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:24,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754304749] [2024-11-10 10:29:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:24,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754304749] [2024-11-10 10:29:24,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754304749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652014459] [2024-11-10 10:29:24,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:24,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:24,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:24,980 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:24,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-10 10:29:25,045 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 10:29:25,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:25,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:25,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:25,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:25,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652014459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:25,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:25,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-10 10:29:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247876366] [2024-11-10 10:29:25,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:25,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:25,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:25,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 509 transitions, 10588 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:25,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:25,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:25,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:25,816 INFO L124 PetriNetUnfolderBase]: 1312/2407 cut-off events. [2024-11-10 10:29:25,817 INFO L125 PetriNetUnfolderBase]: For 118177/118177 co-relation queries the response was YES. [2024-11-10 10:29:25,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23736 conditions, 2407 events. 1312/2407 cut-off events. For 118177/118177 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 15079 event pairs, 327 based on Foata normal form. 16/2410 useless extension candidates. Maximal degree in co-relation 23632. Up to 1832 conditions per place. [2024-11-10 10:29:25,853 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 495 selfloop transitions, 99 changer transitions 3/600 dead transitions. [2024-11-10 10:29:25,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 600 transitions, 13632 flow [2024-11-10 10:29:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:29:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:29:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 172 transitions. [2024-11-10 10:29:25,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-10 10:29:25,854 INFO L175 Difference]: Start difference. First operand has 276 places, 509 transitions, 10588 flow. Second operand 16 states and 172 transitions. [2024-11-10 10:29:25,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 600 transitions, 13632 flow [2024-11-10 10:29:26,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 600 transitions, 12995 flow, removed 181 selfloop flow, removed 14 redundant places. [2024-11-10 10:29:26,175 INFO L231 Difference]: Finished difference. Result has 284 places, 559 transitions, 11516 flow [2024-11-10 10:29:26,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10000, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11516, PETRI_PLACES=284, PETRI_TRANSITIONS=559} [2024-11-10 10:29:26,176 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 260 predicate places. [2024-11-10 10:29:26,176 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 559 transitions, 11516 flow [2024-11-10 10:29:26,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:26,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:26,177 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:26,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:26,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:26,377 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:26,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1062563734, now seen corresponding path program 19 times [2024-11-10 10:29:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:26,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459560601] [2024-11-10 10:29:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459560601] [2024-11-10 10:29:26,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459560601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957765221] [2024-11-10 10:29:26,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:26,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:26,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:26,446 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:26,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-10 10:29:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:26,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:26,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:26,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:26,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957765221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:26,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:26,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-10 10:29:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367027633] [2024-11-10 10:29:26,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:26,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:26,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:26,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:26,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 559 transitions, 11516 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:26,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:26,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:26,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:27,492 INFO L124 PetriNetUnfolderBase]: 1305/2417 cut-off events. [2024-11-10 10:29:27,492 INFO L125 PetriNetUnfolderBase]: For 96397/96397 co-relation queries the response was YES. [2024-11-10 10:29:27,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22958 conditions, 2417 events. 1305/2417 cut-off events. For 96397/96397 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15260 event pairs, 194 based on Foata normal form. 12/2424 useless extension candidates. Maximal degree in co-relation 22846. Up to 1245 conditions per place. [2024-11-10 10:29:27,533 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 331 selfloop transitions, 287 changer transitions 9/630 dead transitions. [2024-11-10 10:29:27,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 630 transitions, 14237 flow [2024-11-10 10:29:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:29:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:29:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 176 transitions. [2024-11-10 10:29:27,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-11-10 10:29:27,534 INFO L175 Difference]: Start difference. First operand has 284 places, 559 transitions, 11516 flow. Second operand 17 states and 176 transitions. [2024-11-10 10:29:27,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 630 transitions, 14237 flow [2024-11-10 10:29:27,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 630 transitions, 13761 flow, removed 214 selfloop flow, removed 7 redundant places. [2024-11-10 10:29:27,918 INFO L231 Difference]: Finished difference. Result has 299 places, 571 transitions, 12196 flow [2024-11-10 10:29:27,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11003, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12196, PETRI_PLACES=299, PETRI_TRANSITIONS=571} [2024-11-10 10:29:27,919 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 275 predicate places. [2024-11-10 10:29:27,919 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 571 transitions, 12196 flow [2024-11-10 10:29:27,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:27,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:27,919 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:27,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:28,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-10 10:29:28,120 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:28,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:28,121 INFO L85 PathProgramCache]: Analyzing trace with hash 306844290, now seen corresponding path program 20 times [2024-11-10 10:29:28,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:28,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955141569] [2024-11-10 10:29:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:28,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:28,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955141569] [2024-11-10 10:29:28,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955141569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492674886] [2024-11-10 10:29:28,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:28,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:28,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:28,201 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:28,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-10 10:29:28,266 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:28,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:28,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:28,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:28,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:28,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:28,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492674886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:28,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 10:29:28,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743623681] [2024-11-10 10:29:28,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:28,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:29:28,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:29:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:28,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:28,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 571 transitions, 12196 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) [2024-11-10 10:29:28,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:28,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:28,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:29,134 INFO L124 PetriNetUnfolderBase]: 1367/2511 cut-off events. [2024-11-10 10:29:29,134 INFO L125 PetriNetUnfolderBase]: For 109756/109760 co-relation queries the response was YES. [2024-11-10 10:29:29,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24998 conditions, 2511 events. 1367/2511 cut-off events. For 109756/109760 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 15893 event pairs, 204 based on Foata normal form. 14/2508 useless extension candidates. Maximal degree in co-relation 24881. Up to 1293 conditions per place. [2024-11-10 10:29:29,169 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 349 selfloop transitions, 308 changer transitions 10/670 dead transitions. [2024-11-10 10:29:29,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 670 transitions, 15624 flow [2024-11-10 10:29:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:29:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:29:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 217 transitions. [2024-11-10 10:29:29,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39311594202898553 [2024-11-10 10:29:29,171 INFO L175 Difference]: Start difference. First operand has 299 places, 571 transitions, 12196 flow. Second operand 23 states and 217 transitions. [2024-11-10 10:29:29,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 670 transitions, 15624 flow [2024-11-10 10:29:29,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 670 transitions, 15143 flow, removed 210 selfloop flow, removed 7 redundant places. [2024-11-10 10:29:29,610 INFO L231 Difference]: Finished difference. Result has 322 places, 607 transitions, 13897 flow [2024-11-10 10:29:29,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11795, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13897, PETRI_PLACES=322, PETRI_TRANSITIONS=607} [2024-11-10 10:29:29,612 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 298 predicate places. [2024-11-10 10:29:29,612 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 607 transitions, 13897 flow [2024-11-10 10:29:29,612 INFO L472 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) [2024-11-10 10:29:29,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:29,612 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:29,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-10 10:29:29,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-10 10:29:29,813 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:29,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:29,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1741095202, now seen corresponding path program 21 times [2024-11-10 10:29:29,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:29,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898289025] [2024-11-10 10:29:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:29,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:29,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:29,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898289025] [2024-11-10 10:29:29,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898289025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:29,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939578811] [2024-11-10 10:29:29,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:29,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:29,880 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:29,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-10 10:29:29,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 10:29:29,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:29,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:29,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:29,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:30,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939578811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:30,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:30,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:29:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148090613] [2024-11-10 10:29:30,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:30,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:30,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:30,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:30,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:30,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 607 transitions, 13897 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:30,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:30,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:30,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:30,804 INFO L124 PetriNetUnfolderBase]: 1484/2696 cut-off events. [2024-11-10 10:29:30,805 INFO L125 PetriNetUnfolderBase]: For 150256/150256 co-relation queries the response was YES. [2024-11-10 10:29:30,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28882 conditions, 2696 events. 1484/2696 cut-off events. For 150256/150256 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 17145 event pairs, 230 based on Foata normal form. 14/2699 useless extension candidates. Maximal degree in co-relation 28757. Up to 1543 conditions per place. [2024-11-10 10:29:30,846 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 428 selfloop transitions, 260 changer transitions 4/695 dead transitions. [2024-11-10 10:29:30,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 695 transitions, 17434 flow [2024-11-10 10:29:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:29:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:29:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 186 transitions. [2024-11-10 10:29:30,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-11-10 10:29:30,847 INFO L175 Difference]: Start difference. First operand has 322 places, 607 transitions, 13897 flow. Second operand 17 states and 186 transitions. [2024-11-10 10:29:30,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 695 transitions, 17434 flow [2024-11-10 10:29:31,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 695 transitions, 17053 flow, removed 134 selfloop flow, removed 9 redundant places. [2024-11-10 10:29:31,390 INFO L231 Difference]: Finished difference. Result has 332 places, 648 transitions, 15551 flow [2024-11-10 10:29:31,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13516, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=15551, PETRI_PLACES=332, PETRI_TRANSITIONS=648} [2024-11-10 10:29:31,391 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 308 predicate places. [2024-11-10 10:29:31,391 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 648 transitions, 15551 flow [2024-11-10 10:29:31,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:31,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:31,392 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:31,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-10 10:29:31,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-10 10:29:31,592 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:31,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1991892356, now seen corresponding path program 22 times [2024-11-10 10:29:31,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:31,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036609625] [2024-11-10 10:29:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:31,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036609625] [2024-11-10 10:29:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036609625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431019801] [2024-11-10 10:29:31,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:31,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:31,672 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:31,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-10 10:29:31,726 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:31,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:31,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:31,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:31,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431019801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:31,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 10:29:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720534663] [2024-11-10 10:29:31,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:31,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:31,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:31,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 648 transitions, 15551 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:31,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:31,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:31,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:32,616 INFO L124 PetriNetUnfolderBase]: 1500/2752 cut-off events. [2024-11-10 10:29:32,616 INFO L125 PetriNetUnfolderBase]: For 157647/157647 co-relation queries the response was YES. [2024-11-10 10:29:32,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30530 conditions, 2752 events. 1500/2752 cut-off events. For 157647/157647 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 17747 event pairs, 157 based on Foata normal form. 10/2757 useless extension candidates. Maximal degree in co-relation 30398. Up to 1138 conditions per place. [2024-11-10 10:29:32,656 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 321 selfloop transitions, 392 changer transitions 16/732 dead transitions. [2024-11-10 10:29:32,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 732 transitions, 18712 flow [2024-11-10 10:29:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:29:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:29:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 207 transitions. [2024-11-10 10:29:32,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-11-10 10:29:32,658 INFO L175 Difference]: Start difference. First operand has 332 places, 648 transitions, 15551 flow. Second operand 22 states and 207 transitions. [2024-11-10 10:29:32,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 732 transitions, 18712 flow [2024-11-10 10:29:33,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 732 transitions, 18213 flow, removed 212 selfloop flow, removed 11 redundant places. [2024-11-10 10:29:33,329 INFO L231 Difference]: Finished difference. Result has 350 places, 657 transitions, 16444 flow [2024-11-10 10:29:33,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=15119, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16444, PETRI_PLACES=350, PETRI_TRANSITIONS=657} [2024-11-10 10:29:33,330 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 326 predicate places. [2024-11-10 10:29:33,330 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 657 transitions, 16444 flow [2024-11-10 10:29:33,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:33,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:33,331 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:33,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-10 10:29:33,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:33,531 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:33,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:33,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1947067556, now seen corresponding path program 23 times [2024-11-10 10:29:33,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:33,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393435588] [2024-11-10 10:29:33,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:33,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:33,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:33,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393435588] [2024-11-10 10:29:33,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393435588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:33,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483252521] [2024-11-10 10:29:33,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:33,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:33,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:33,616 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:33,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-10 10:29:33,678 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:33,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:33,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:33,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:33,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483252521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:33,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:29:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967465084] [2024-11-10 10:29:33,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:33,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:33,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:33,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 657 transitions, 16444 flow. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:33,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:33,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:34,758 INFO L124 PetriNetUnfolderBase]: 1474/2692 cut-off events. [2024-11-10 10:29:34,759 INFO L125 PetriNetUnfolderBase]: For 151951/151955 co-relation queries the response was YES. [2024-11-10 10:29:34,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30700 conditions, 2692 events. 1474/2692 cut-off events. For 151951/151955 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 17149 event pairs, 130 based on Foata normal form. 12/2699 useless extension candidates. Maximal degree in co-relation 30566. Up to 1014 conditions per place. [2024-11-10 10:29:34,802 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 283 selfloop transitions, 428 changer transitions 5/719 dead transitions. [2024-11-10 10:29:34,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 719 transitions, 19316 flow [2024-11-10 10:29:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 10:29:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 10:29:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 193 transitions. [2024-11-10 10:29:34,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4232456140350877 [2024-11-10 10:29:34,804 INFO L175 Difference]: Start difference. First operand has 350 places, 657 transitions, 16444 flow. Second operand 19 states and 193 transitions. [2024-11-10 10:29:34,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 719 transitions, 19316 flow [2024-11-10 10:29:35,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 719 transitions, 18681 flow, removed 63 selfloop flow, removed 13 redundant places. [2024-11-10 10:29:35,433 INFO L231 Difference]: Finished difference. Result has 352 places, 659 transitions, 17017 flow [2024-11-10 10:29:35,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=15650, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17017, PETRI_PLACES=352, PETRI_TRANSITIONS=659} [2024-11-10 10:29:35,435 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2024-11-10 10:29:35,435 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 659 transitions, 17017 flow [2024-11-10 10:29:35,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:35,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:35,435 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:35,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-10 10:29:35,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-10 10:29:35,636 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:35,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:35,638 INFO L85 PathProgramCache]: Analyzing trace with hash 527637938, now seen corresponding path program 24 times [2024-11-10 10:29:35,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:35,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365291242] [2024-11-10 10:29:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:35,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:35,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:35,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365291242] [2024-11-10 10:29:35,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365291242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:35,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275115712] [2024-11-10 10:29:35,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:35,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:35,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:35,720 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:35,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-10 10:29:35,782 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 10:29:35,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:35,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:35,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:35,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275115712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:35,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:35,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-10 10:29:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639654848] [2024-11-10 10:29:35,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:35,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:29:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:29:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:29:35,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:35,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 659 transitions, 17017 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:35,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:35,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:35,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:36,640 INFO L124 PetriNetUnfolderBase]: 1456/2652 cut-off events. [2024-11-10 10:29:36,641 INFO L125 PetriNetUnfolderBase]: For 152870/152874 co-relation queries the response was YES. [2024-11-10 10:29:36,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30993 conditions, 2652 events. 1456/2652 cut-off events. For 152870/152874 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 16805 event pairs, 153 based on Foata normal form. 6/2635 useless extension candidates. Maximal degree in co-relation 30860. Up to 1112 conditions per place. [2024-11-10 10:29:36,675 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 350 selfloop transitions, 331 changer transitions 17/701 dead transitions. [2024-11-10 10:29:36,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 701 transitions, 19154 flow [2024-11-10 10:29:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:29:36,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:29:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-11-10 10:29:36,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-11-10 10:29:36,676 INFO L175 Difference]: Start difference. First operand has 352 places, 659 transitions, 17017 flow. Second operand 13 states and 124 transitions. [2024-11-10 10:29:36,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 701 transitions, 19154 flow [2024-11-10 10:29:37,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 701 transitions, 18669 flow, removed 82 selfloop flow, removed 11 redundant places. [2024-11-10 10:29:37,235 INFO L231 Difference]: Finished difference. Result has 351 places, 646 transitions, 17046 flow [2024-11-10 10:29:37,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16373, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17046, PETRI_PLACES=351, PETRI_TRANSITIONS=646} [2024-11-10 10:29:37,236 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 327 predicate places. [2024-11-10 10:29:37,236 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 646 transitions, 17046 flow [2024-11-10 10:29:37,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:37,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:37,237 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:37,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:37,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-10 10:29:37,438 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:37,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash 172557626, now seen corresponding path program 25 times [2024-11-10 10:29:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:37,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305488027] [2024-11-10 10:29:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305488027] [2024-11-10 10:29:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305488027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703780908] [2024-11-10 10:29:37,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:37,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:37,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:37,532 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:37,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-10 10:29:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:37,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:37,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:37,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:37,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703780908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:37,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:37,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 10:29:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291824883] [2024-11-10 10:29:37,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:37,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:29:37,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:29:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:37,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:37,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 646 transitions, 17046 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) [2024-11-10 10:29:37,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:37,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:37,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:38,757 INFO L124 PetriNetUnfolderBase]: 1645/2990 cut-off events. [2024-11-10 10:29:38,757 INFO L125 PetriNetUnfolderBase]: For 192757/192757 co-relation queries the response was YES. [2024-11-10 10:29:38,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36054 conditions, 2990 events. 1645/2990 cut-off events. For 192757/192757 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19336 event pairs, 59 based on Foata normal form. 56/3041 useless extension candidates. Maximal degree in co-relation 35919. Up to 1829 conditions per place. [2024-11-10 10:29:38,801 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 549 selfloop transitions, 236 changer transitions 0/788 dead transitions. [2024-11-10 10:29:38,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 788 transitions, 22158 flow [2024-11-10 10:29:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:29:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:29:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 233 transitions. [2024-11-10 10:29:38,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4221014492753623 [2024-11-10 10:29:38,803 INFO L175 Difference]: Start difference. First operand has 351 places, 646 transitions, 17046 flow. Second operand 23 states and 233 transitions. [2024-11-10 10:29:38,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 788 transitions, 22158 flow [2024-11-10 10:29:39,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 788 transitions, 21226 flow, removed 68 selfloop flow, removed 13 redundant places. [2024-11-10 10:29:39,503 INFO L231 Difference]: Finished difference. Result has 363 places, 738 transitions, 19583 flow [2024-11-10 10:29:39,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16058, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=19583, PETRI_PLACES=363, PETRI_TRANSITIONS=738} [2024-11-10 10:29:39,504 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 339 predicate places. [2024-11-10 10:29:39,504 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 738 transitions, 19583 flow [2024-11-10 10:29:39,504 INFO L472 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) [2024-11-10 10:29:39,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:39,504 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:39,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-10 10:29:39,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-10 10:29:39,705 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:39,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1545421718, now seen corresponding path program 26 times [2024-11-10 10:29:39,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:39,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894136133] [2024-11-10 10:29:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:39,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:39,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894136133] [2024-11-10 10:29:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894136133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700573773] [2024-11-10 10:29:39,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:39,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:39,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:39,780 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:39,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-10 10:29:39,845 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:39,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:39,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:39,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:39,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:39,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700573773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:39,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:39,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-10 10:29:39,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918749984] [2024-11-10 10:29:39,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:39,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:39,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:39,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 738 transitions, 19583 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:39,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:39,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:39,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:40,994 INFO L124 PetriNetUnfolderBase]: 1917/3432 cut-off events. [2024-11-10 10:29:40,995 INFO L125 PetriNetUnfolderBase]: For 241815/241815 co-relation queries the response was YES. [2024-11-10 10:29:41,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42818 conditions, 3432 events. 1917/3432 cut-off events. For 241815/241815 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 22527 event pairs, 68 based on Foata normal form. 16/3443 useless extension candidates. Maximal degree in co-relation 42677. Up to 1798 conditions per place. [2024-11-10 10:29:41,050 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 533 selfloop transitions, 360 changer transitions 0/896 dead transitions. [2024-11-10 10:29:41,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 896 transitions, 25832 flow [2024-11-10 10:29:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:29:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:29:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 187 transitions. [2024-11-10 10:29:41,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-10 10:29:41,051 INFO L175 Difference]: Start difference. First operand has 363 places, 738 transitions, 19583 flow. Second operand 17 states and 187 transitions. [2024-11-10 10:29:41,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 896 transitions, 25832 flow [2024-11-10 10:29:41,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 896 transitions, 24641 flow, removed 493 selfloop flow, removed 7 redundant places. [2024-11-10 10:29:41,999 INFO L231 Difference]: Finished difference. Result has 378 places, 843 transitions, 22813 flow [2024-11-10 10:29:42,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=18473, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22813, PETRI_PLACES=378, PETRI_TRANSITIONS=843} [2024-11-10 10:29:42,000 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 354 predicate places. [2024-11-10 10:29:42,001 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 843 transitions, 22813 flow [2024-11-10 10:29:42,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:42,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:42,001 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:42,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-10 10:29:42,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:42,201 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:42,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash 490838854, now seen corresponding path program 27 times [2024-11-10 10:29:42,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:42,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201107867] [2024-11-10 10:29:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:42,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201107867] [2024-11-10 10:29:42,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201107867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690006485] [2024-11-10 10:29:42,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:42,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:42,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:42,268 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:42,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-10 10:29:42,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 10:29:42,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:42,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:42,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:42,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:42,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690006485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:42,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:42,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-10 10:29:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237556015] [2024-11-10 10:29:42,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:42,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:42,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:42,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:42,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 843 transitions, 22813 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:42,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:42,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:42,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:43,744 INFO L124 PetriNetUnfolderBase]: 1870/3364 cut-off events. [2024-11-10 10:29:43,745 INFO L125 PetriNetUnfolderBase]: For 222743/222743 co-relation queries the response was YES. [2024-11-10 10:29:43,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41497 conditions, 3364 events. 1870/3364 cut-off events. For 222743/222743 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 22052 event pairs, 56 based on Foata normal form. 17/3376 useless extension candidates. Maximal degree in co-relation 41349. Up to 1427 conditions per place. [2024-11-10 10:29:43,819 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 608 selfloop transitions, 311 changer transitions 2/924 dead transitions. [2024-11-10 10:29:43,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 924 transitions, 26533 flow [2024-11-10 10:29:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:29:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:29:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 216 transitions. [2024-11-10 10:29:43,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-10 10:29:43,821 INFO L175 Difference]: Start difference. First operand has 378 places, 843 transitions, 22813 flow. Second operand 22 states and 216 transitions. [2024-11-10 10:29:43,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 924 transitions, 26533 flow [2024-11-10 10:29:44,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 924 transitions, 25720 flow, removed 290 selfloop flow, removed 11 redundant places. [2024-11-10 10:29:44,932 INFO L231 Difference]: Finished difference. Result has 394 places, 841 transitions, 22775 flow [2024-11-10 10:29:44,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21124, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=22775, PETRI_PLACES=394, PETRI_TRANSITIONS=841} [2024-11-10 10:29:44,934 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 370 predicate places. [2024-11-10 10:29:44,934 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 841 transitions, 22775 flow [2024-11-10 10:29:44,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:44,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:44,934 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:44,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:45,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-10 10:29:45,135 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:45,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2121841230, now seen corresponding path program 28 times [2024-11-10 10:29:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639782035] [2024-11-10 10:29:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:45,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639782035] [2024-11-10 10:29:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639782035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647775632] [2024-11-10 10:29:45,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:45,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:45,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:45,207 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:45,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-10 10:29:45,268 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:45,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:45,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:45,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:45,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:29:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647775632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:45,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-10 10:29:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811281797] [2024-11-10 10:29:45,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:45,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:45,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:45,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 841 transitions, 22775 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:45,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:45,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:45,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:46,531 INFO L124 PetriNetUnfolderBase]: 1859/3363 cut-off events. [2024-11-10 10:29:46,531 INFO L125 PetriNetUnfolderBase]: For 231716/231716 co-relation queries the response was YES. [2024-11-10 10:29:46,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41748 conditions, 3363 events. 1859/3363 cut-off events. For 231716/231716 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 22216 event pairs, 55 based on Foata normal form. 23/3381 useless extension candidates. Maximal degree in co-relation 41598. Up to 1237 conditions per place. [2024-11-10 10:29:46,588 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 549 selfloop transitions, 390 changer transitions 2/944 dead transitions. [2024-11-10 10:29:46,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 944 transitions, 27446 flow [2024-11-10 10:29:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:29:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:29:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 230 transitions. [2024-11-10 10:29:46,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-10 10:29:46,589 INFO L175 Difference]: Start difference. First operand has 394 places, 841 transitions, 22775 flow. Second operand 22 states and 230 transitions. [2024-11-10 10:29:46,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 944 transitions, 27446 flow [2024-11-10 10:29:47,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 944 transitions, 26761 flow, removed 241 selfloop flow, removed 5 redundant places. [2024-11-10 10:29:47,836 INFO L231 Difference]: Finished difference. Result has 417 places, 864 transitions, 24210 flow [2024-11-10 10:29:47,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21848, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=361, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=24210, PETRI_PLACES=417, PETRI_TRANSITIONS=864} [2024-11-10 10:29:47,838 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 393 predicate places. [2024-11-10 10:29:47,838 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 864 transitions, 24210 flow [2024-11-10 10:29:47,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:47,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:47,838 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:47,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:48,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:48,039 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:48,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:48,040 INFO L85 PathProgramCache]: Analyzing trace with hash -102764796, now seen corresponding path program 29 times [2024-11-10 10:29:48,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:48,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185496857] [2024-11-10 10:29:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185496857] [2024-11-10 10:29:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185496857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509274402] [2024-11-10 10:29:48,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:48,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:48,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:48,105 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:48,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-10 10:29:48,161 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 10:29:48,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:48,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:48,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:48,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509274402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:48,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 10:29:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300408614] [2024-11-10 10:29:48,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:48,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:29:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:29:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:48,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:48,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 864 transitions, 24210 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) [2024-11-10 10:29:48,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:48,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:48,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:49,595 INFO L124 PetriNetUnfolderBase]: 1943/3508 cut-off events. [2024-11-10 10:29:49,595 INFO L125 PetriNetUnfolderBase]: For 262329/262333 co-relation queries the response was YES. [2024-11-10 10:29:49,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45118 conditions, 3508 events. 1943/3508 cut-off events. For 262329/262333 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 23404 event pairs, 55 based on Foata normal form. 28/3531 useless extension candidates. Maximal degree in co-relation 44961. Up to 1260 conditions per place. [2024-11-10 10:29:49,656 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 568 selfloop transitions, 416 changer transitions 8/995 dead transitions. [2024-11-10 10:29:49,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 995 transitions, 29906 flow [2024-11-10 10:29:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 10:29:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 10:29:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 274 transitions. [2024-11-10 10:29:49,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-11-10 10:29:49,658 INFO L175 Difference]: Start difference. First operand has 417 places, 864 transitions, 24210 flow. Second operand 28 states and 274 transitions. [2024-11-10 10:29:49,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 995 transitions, 29906 flow [2024-11-10 10:29:50,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 995 transitions, 28681 flow, removed 490 selfloop flow, removed 10 redundant places. [2024-11-10 10:29:50,949 INFO L231 Difference]: Finished difference. Result has 445 places, 904 transitions, 26199 flow [2024-11-10 10:29:50,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=23070, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=26199, PETRI_PLACES=445, PETRI_TRANSITIONS=904} [2024-11-10 10:29:50,950 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 421 predicate places. [2024-11-10 10:29:50,951 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 904 transitions, 26199 flow [2024-11-10 10:29:50,951 INFO L472 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) [2024-11-10 10:29:50,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:50,951 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:50,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:51,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-10 10:29:51,152 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:51,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1202384944, now seen corresponding path program 30 times [2024-11-10 10:29:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:51,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699939352] [2024-11-10 10:29:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:51,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:51,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699939352] [2024-11-10 10:29:51,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699939352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:51,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229370181] [2024-11-10 10:29:51,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:51,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:51,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:51,223 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:51,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-10 10:29:51,277 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 10:29:51,277 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:51,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:51,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:51,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:51,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229370181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:51,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:51,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 10:29:51,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126855391] [2024-11-10 10:29:51,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:51,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:29:51,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:51,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:29:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:29:51,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:51,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 904 transitions, 26199 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) [2024-11-10 10:29:51,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:51,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:51,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:52,681 INFO L124 PetriNetUnfolderBase]: 1985/3586 cut-off events. [2024-11-10 10:29:52,681 INFO L125 PetriNetUnfolderBase]: For 231340/231344 co-relation queries the response was YES. [2024-11-10 10:29:52,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45188 conditions, 3586 events. 1985/3586 cut-off events. For 231340/231344 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 24107 event pairs, 70 based on Foata normal form. 8/3589 useless extension candidates. Maximal degree in co-relation 45021. Up to 2398 conditions per place. [2024-11-10 10:29:52,743 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 717 selfloop transitions, 233 changer transitions 0/953 dead transitions. [2024-11-10 10:29:52,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 953 transitions, 28787 flow [2024-11-10 10:29:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:29:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:29:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 148 transitions. [2024-11-10 10:29:52,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-11-10 10:29:52,744 INFO L175 Difference]: Start difference. First operand has 445 places, 904 transitions, 26199 flow. Second operand 15 states and 148 transitions. [2024-11-10 10:29:52,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 953 transitions, 28787 flow [2024-11-10 10:29:53,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 953 transitions, 27889 flow, removed 232 selfloop flow, removed 12 redundant places. [2024-11-10 10:29:53,946 INFO L231 Difference]: Finished difference. Result has 448 places, 929 transitions, 26354 flow [2024-11-10 10:29:53,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=24982, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=892, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=26354, PETRI_PLACES=448, PETRI_TRANSITIONS=929} [2024-11-10 10:29:53,947 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 424 predicate places. [2024-11-10 10:29:53,947 INFO L471 AbstractCegarLoop]: Abstraction has has 448 places, 929 transitions, 26354 flow [2024-11-10 10:29:53,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:53,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:53,948 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:53,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:54,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:54,148 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:54,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:54,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1519087172, now seen corresponding path program 31 times [2024-11-10 10:29:54,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:54,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940640468] [2024-11-10 10:29:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940640468] [2024-11-10 10:29:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940640468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290414038] [2024-11-10 10:29:54,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:54,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:54,210 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:54,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-10 10:29:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:54,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:54,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:54,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:54,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290414038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:54,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:54,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:29:54,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012154431] [2024-11-10 10:29:54,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:54,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:54,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:54,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:54,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:54,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:54,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 929 transitions, 26354 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:54,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:54,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:54,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:55,662 INFO L124 PetriNetUnfolderBase]: 2018/3661 cut-off events. [2024-11-10 10:29:55,663 INFO L125 PetriNetUnfolderBase]: For 229477/229477 co-relation queries the response was YES. [2024-11-10 10:29:55,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45215 conditions, 3661 events. 2018/3661 cut-off events. For 229477/229477 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 24677 event pairs, 66 based on Foata normal form. 20/3676 useless extension candidates. Maximal degree in co-relation 45044. Up to 2113 conditions per place. [2024-11-10 10:29:55,730 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 641 selfloop transitions, 334 changer transitions 0/978 dead transitions. [2024-11-10 10:29:55,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 978 transitions, 29218 flow [2024-11-10 10:29:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:29:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:29:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 171 transitions. [2024-11-10 10:29:55,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-11-10 10:29:55,732 INFO L175 Difference]: Start difference. First operand has 448 places, 929 transitions, 26354 flow. Second operand 16 states and 171 transitions. [2024-11-10 10:29:55,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 978 transitions, 29218 flow [2024-11-10 10:29:56,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 978 transitions, 28825 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-11-10 10:29:56,968 INFO L231 Difference]: Finished difference. Result has 459 places, 944 transitions, 27335 flow [2024-11-10 10:29:56,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=25515, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=27335, PETRI_PLACES=459, PETRI_TRANSITIONS=944} [2024-11-10 10:29:56,970 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 435 predicate places. [2024-11-10 10:29:56,970 INFO L471 AbstractCegarLoop]: Abstraction has has 459 places, 944 transitions, 27335 flow [2024-11-10 10:29:56,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:56,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:56,970 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:29:56,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-10 10:29:57,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-10 10:29:57,171 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:29:57,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash -367585906, now seen corresponding path program 32 times [2024-11-10 10:29:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:57,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297056237] [2024-11-10 10:29:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:57,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:57,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297056237] [2024-11-10 10:29:57,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297056237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:57,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162011479] [2024-11-10 10:29:57,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:57,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:57,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:57,233 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:57,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-10 10:29:57,287 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:57,287 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:57,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:29:57,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:57,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162011479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:57,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-10 10:29:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477617059] [2024-11-10 10:29:57,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:57,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:29:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:29:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:29:57,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:29:57,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 944 transitions, 27335 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:57,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:57,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:29:57,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:58,839 INFO L124 PetriNetUnfolderBase]: 2072/3781 cut-off events. [2024-11-10 10:29:58,839 INFO L125 PetriNetUnfolderBase]: For 237480/237480 co-relation queries the response was YES. [2024-11-10 10:29:58,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46966 conditions, 3781 events. 2072/3781 cut-off events. For 237480/237480 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 25789 event pairs, 35 based on Foata normal form. 8/3784 useless extension candidates. Maximal degree in co-relation 46792. Up to 2084 conditions per place. [2024-11-10 10:29:58,910 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 660 selfloop transitions, 338 changer transitions 1/1002 dead transitions. [2024-11-10 10:29:58,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1002 transitions, 30581 flow [2024-11-10 10:29:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:29:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:29:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-11-10 10:29:58,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-10 10:29:58,911 INFO L175 Difference]: Start difference. First operand has 459 places, 944 transitions, 27335 flow. Second operand 10 states and 108 transitions. [2024-11-10 10:29:58,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1002 transitions, 30581 flow [2024-11-10 10:30:00,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 1002 transitions, 30110 flow, removed 26 selfloop flow, removed 16 redundant places. [2024-11-10 10:30:00,287 INFO L231 Difference]: Finished difference. Result has 452 places, 967 transitions, 28289 flow [2024-11-10 10:30:00,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=26401, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28289, PETRI_PLACES=452, PETRI_TRANSITIONS=967} [2024-11-10 10:30:00,288 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 428 predicate places. [2024-11-10 10:30:00,288 INFO L471 AbstractCegarLoop]: Abstraction has has 452 places, 967 transitions, 28289 flow [2024-11-10 10:30:00,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:00,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:00,288 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:00,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-10 10:30:00,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-10 10:30:00,489 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:00,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash -644415010, now seen corresponding path program 33 times [2024-11-10 10:30:00,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:00,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232103390] [2024-11-10 10:30:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:00,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:00,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:00,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232103390] [2024-11-10 10:30:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232103390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:00,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775594337] [2024-11-10 10:30:00,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:30:00,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:00,558 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:00,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-10 10:30:00,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 10:30:00,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:00,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:30:00,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:00,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775594337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:00,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:30:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493539395] [2024-11-10 10:30:00,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:00,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:30:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:30:00,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:30:00,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-10 10:30:00,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 967 transitions, 28289 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:00,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:00,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-10 10:30:00,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:02,172 INFO L124 PetriNetUnfolderBase]: 2039/3712 cut-off events. [2024-11-10 10:30:02,172 INFO L125 PetriNetUnfolderBase]: For 237645/237645 co-relation queries the response was YES. [2024-11-10 10:30:02,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46310 conditions, 3712 events. 2039/3712 cut-off events. For 237645/237645 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 25160 event pairs, 75 based on Foata normal form. 12/3720 useless extension candidates. Maximal degree in co-relation 46138. Up to 1382 conditions per place. [2024-11-10 10:30:02,238 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 613 selfloop transitions, 406 changer transitions 5/1027 dead transitions. [2024-11-10 10:30:02,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1027 transitions, 31550 flow [2024-11-10 10:30:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 10:30:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-10 10:30:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 194 transitions. [2024-11-10 10:30:02,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-11-10 10:30:02,240 INFO L175 Difference]: Start difference. First operand has 452 places, 967 transitions, 28289 flow. Second operand 20 states and 194 transitions. [2024-11-10 10:30:02,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1027 transitions, 31550 flow [2024-11-10 10:30:03,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1027 transitions, 30800 flow, removed 33 selfloop flow, removed 12 redundant places. [2024-11-10 10:30:03,381 INFO L231 Difference]: Finished difference. Result has 459 places, 953 transitions, 28072 flow [2024-11-10 10:30:03,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=26885, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=28072, PETRI_PLACES=459, PETRI_TRANSITIONS=953} [2024-11-10 10:30:03,383 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 435 predicate places. [2024-11-10 10:30:03,383 INFO L471 AbstractCegarLoop]: Abstraction has has 459 places, 953 transitions, 28072 flow [2024-11-10 10:30:03,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:03,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:03,384 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:03,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-10 10:30:03,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-10 10:30:03,584 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:03,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash -701991957, now seen corresponding path program 34 times [2024-11-10 10:30:03,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:03,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258007844] [2024-11-10 10:30:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:03,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:03,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258007844] [2024-11-10 10:30:03,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258007844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:03,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213102319] [2024-11-10 10:30:03,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:30:03,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:03,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:03,856 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:03,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-10 10:30:03,918 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:30:03,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:03,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:30:03,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:04,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213102319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:04,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-10 10:30:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708195478] [2024-11-10 10:30:04,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:04,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:30:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:30:04,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:30:04,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:30:04,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 953 transitions, 28072 flow. Second operand has 18 states, 18 states have (on average 9.166666666666666) internal successors, (165), 18 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:04,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:04,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:30:04,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:05,972 INFO L124 PetriNetUnfolderBase]: 2023/4052 cut-off events. [2024-11-10 10:30:05,972 INFO L125 PetriNetUnfolderBase]: For 310405/310443 co-relation queries the response was YES. [2024-11-10 10:30:06,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53423 conditions, 4052 events. 2023/4052 cut-off events. For 310405/310443 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 31171 event pairs, 49 based on Foata normal form. 6/4054 useless extension candidates. Maximal degree in co-relation 53253. Up to 2202 conditions per place. [2024-11-10 10:30:06,066 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 847 selfloop transitions, 152 changer transitions 23/1143 dead transitions. [2024-11-10 10:30:06,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1143 transitions, 34885 flow [2024-11-10 10:30:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:30:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:30:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-11-10 10:30:06,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 10:30:06,068 INFO L175 Difference]: Start difference. First operand has 459 places, 953 transitions, 28072 flow. Second operand 11 states and 154 transitions. [2024-11-10 10:30:06,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1143 transitions, 34885 flow [2024-11-10 10:30:07,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1143 transitions, 34297 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-10 10:30:07,632 INFO L231 Difference]: Finished difference. Result has 460 places, 1043 transitions, 30537 flow [2024-11-10 10:30:07,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=27522, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30537, PETRI_PLACES=460, PETRI_TRANSITIONS=1043} [2024-11-10 10:30:07,634 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 436 predicate places. [2024-11-10 10:30:07,634 INFO L471 AbstractCegarLoop]: Abstraction has has 460 places, 1043 transitions, 30537 flow [2024-11-10 10:30:07,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.166666666666666) internal successors, (165), 18 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:07,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:07,634 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:07,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:07,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-10 10:30:07,835 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:07,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2104647813, now seen corresponding path program 35 times [2024-11-10 10:30:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092277729] [2024-11-10 10:30:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:07,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:08,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:08,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092277729] [2024-11-10 10:30:08,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092277729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:08,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319045500] [2024-11-10 10:30:08,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:30:08,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:08,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:08,100 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:08,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-10 10:30:08,170 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-10 10:30:08,170 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:08,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:30:08,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:08,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:08,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319045500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:08,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:08,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-10 10:30:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553965905] [2024-11-10 10:30:08,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:08,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 10:30:08,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 10:30:08,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-10 10:30:08,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:30:08,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1043 transitions, 30537 flow. Second operand has 20 states, 20 states have (on average 9.15) internal successors, (183), 20 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:08,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:08,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:30:08,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:10,202 INFO L124 PetriNetUnfolderBase]: 1998/4048 cut-off events. [2024-11-10 10:30:10,202 INFO L125 PetriNetUnfolderBase]: For 318295/318333 co-relation queries the response was YES. [2024-11-10 10:30:10,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53477 conditions, 4048 events. 1998/4048 cut-off events. For 318295/318333 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 31509 event pairs, 50 based on Foata normal form. 4/4048 useless extension candidates. Maximal degree in co-relation 53298. Up to 2208 conditions per place. [2024-11-10 10:30:10,290 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 835 selfloop transitions, 166 changer transitions 8/1130 dead transitions. [2024-11-10 10:30:10,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1130 transitions, 34443 flow [2024-11-10 10:30:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:30:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:30:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-11-10 10:30:10,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 10:30:10,291 INFO L175 Difference]: Start difference. First operand has 460 places, 1043 transitions, 30537 flow. Second operand 11 states and 154 transitions. [2024-11-10 10:30:10,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1130 transitions, 34443 flow [2024-11-10 10:30:12,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1130 transitions, 34222 flow, removed 106 selfloop flow, removed 3 redundant places. [2024-11-10 10:30:12,049 INFO L231 Difference]: Finished difference. Result has 471 places, 1056 transitions, 31282 flow [2024-11-10 10:30:12,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=30338, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1043, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=31282, PETRI_PLACES=471, PETRI_TRANSITIONS=1056} [2024-11-10 10:30:12,051 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 447 predicate places. [2024-11-10 10:30:12,051 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 1056 transitions, 31282 flow [2024-11-10 10:30:12,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.15) internal successors, (183), 20 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:12,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:12,051 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:12,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-10 10:30:12,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-10 10:30:12,252 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:12,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2011986219, now seen corresponding path program 36 times [2024-11-10 10:30:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:12,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174217544] [2024-11-10 10:30:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:12,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174217544] [2024-11-10 10:30:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174217544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109968664] [2024-11-10 10:30:12,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:30:12,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:12,488 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:12,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-10 10:30:12,562 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 10:30:12,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:12,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:30:12,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:12,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109968664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:12,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:12,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-10 10:30:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48865738] [2024-11-10 10:30:12,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:12,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:30:12,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:30:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:30:12,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:30:12,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1056 transitions, 31282 flow. Second operand has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:12,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:12,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:30:12,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:14,756 INFO L124 PetriNetUnfolderBase]: 2008/4088 cut-off events. [2024-11-10 10:30:14,756 INFO L125 PetriNetUnfolderBase]: For 323772/323816 co-relation queries the response was YES. [2024-11-10 10:30:14,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54096 conditions, 4088 events. 2008/4088 cut-off events. For 323772/323816 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 32021 event pairs, 49 based on Foata normal form. 4/4089 useless extension candidates. Maximal degree in co-relation 53913. Up to 2442 conditions per place. [2024-11-10 10:30:14,839 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 856 selfloop transitions, 127 changer transitions 8/1112 dead transitions. [2024-11-10 10:30:14,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1112 transitions, 34102 flow [2024-11-10 10:30:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:30:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:30:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-11-10 10:30:14,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-10 10:30:14,841 INFO L175 Difference]: Start difference. First operand has 471 places, 1056 transitions, 31282 flow. Second operand 12 states and 156 transitions. [2024-11-10 10:30:14,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1112 transitions, 34102 flow [2024-11-10 10:30:16,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1112 transitions, 33855 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-11-10 10:30:16,682 INFO L231 Difference]: Finished difference. Result has 481 places, 1072 transitions, 31907 flow [2024-11-10 10:30:16,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=31048, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=31907, PETRI_PLACES=481, PETRI_TRANSITIONS=1072} [2024-11-10 10:30:16,684 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 457 predicate places. [2024-11-10 10:30:16,684 INFO L471 AbstractCegarLoop]: Abstraction has has 481 places, 1072 transitions, 31907 flow [2024-11-10 10:30:16,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:16,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:16,684 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:16,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:16,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:16,885 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:16,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1643965795, now seen corresponding path program 37 times [2024-11-10 10:30:16,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:16,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018320143] [2024-11-10 10:30:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:16,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:17,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018320143] [2024-11-10 10:30:17,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018320143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086839583] [2024-11-10 10:30:17,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:30:17,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:17,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:17,132 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:17,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-10 10:30:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:17,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:30:17,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:17,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086839583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:17,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-10 10:30:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846030801] [2024-11-10 10:30:17,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:17,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:30:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:30:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:30:17,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:30:17,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1072 transitions, 31907 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:17,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:17,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:30:17,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:19,280 INFO L124 PetriNetUnfolderBase]: 2004/4074 cut-off events. [2024-11-10 10:30:19,280 INFO L125 PetriNetUnfolderBase]: For 324657/324701 co-relation queries the response was YES. [2024-11-10 10:30:19,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54188 conditions, 4074 events. 2004/4074 cut-off events. For 324657/324701 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 31854 event pairs, 48 based on Foata normal form. 7/4078 useless extension candidates. Maximal degree in co-relation 54001. Up to 2317 conditions per place. [2024-11-10 10:30:19,361 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 836 selfloop transitions, 167 changer transitions 4/1128 dead transitions. [2024-11-10 10:30:19,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1128 transitions, 34939 flow [2024-11-10 10:30:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:30:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:30:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-11-10 10:30:19,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-11-10 10:30:19,362 INFO L175 Difference]: Start difference. First operand has 481 places, 1072 transitions, 31907 flow. Second operand 11 states and 147 transitions. [2024-11-10 10:30:19,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1128 transitions, 34939 flow [2024-11-10 10:30:21,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1128 transitions, 34700 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-11-10 10:30:21,238 INFO L231 Difference]: Finished difference. Result has 484 places, 1084 transitions, 32492 flow [2024-11-10 10:30:21,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=31682, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=905, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=32492, PETRI_PLACES=484, PETRI_TRANSITIONS=1084} [2024-11-10 10:30:21,240 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 460 predicate places. [2024-11-10 10:30:21,240 INFO L471 AbstractCegarLoop]: Abstraction has has 484 places, 1084 transitions, 32492 flow [2024-11-10 10:30:21,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:21,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:21,240 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:21,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:21,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-10 10:30:21,441 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:30:21,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1229024525, now seen corresponding path program 38 times [2024-11-10 10:30:21,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:21,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833336518] [2024-11-10 10:30:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:21,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833336518] [2024-11-10 10:30:21,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833336518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:21,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404526563] [2024-11-10 10:30:21,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:30:21,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:21,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:21,666 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:21,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-10 10:30:21,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:30:21,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:21,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:30:21,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:21,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404526563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:22,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:22,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-10 10:30:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603232520] [2024-11-10 10:30:22,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:22,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 10:30:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 10:30:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:30:22,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-10 10:30:22,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1084 transitions, 32492 flow. Second operand has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 19 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:22,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:22,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-10 10:30:22,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:23,726 INFO L124 PetriNetUnfolderBase]: 2137/4338 cut-off events. [2024-11-10 10:30:23,726 INFO L125 PetriNetUnfolderBase]: For 352545/352589 co-relation queries the response was YES. [2024-11-10 10:30:23,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58293 conditions, 4338 events. 2137/4338 cut-off events. For 352545/352589 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 34213 event pairs, 62 based on Foata normal form. 3/4337 useless extension candidates. Maximal degree in co-relation 58107. Up to 2595 conditions per place. [2024-11-10 10:30:23,816 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 922 selfloop transitions, 132 changer transitions 4/1179 dead transitions. [2024-11-10 10:30:23,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1179 transitions, 36873 flow [2024-11-10 10:30:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:30:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:30:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-11-10 10:30:23,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-10 10:30:23,817 INFO L175 Difference]: Start difference. First operand has 484 places, 1084 transitions, 32492 flow. Second operand 9 states and 125 transitions. [2024-11-10 10:30:23,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1179 transitions, 36873 flow