./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/test-easy1.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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:11:04,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:11:04,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:11:04,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:11:04,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:11:04,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:11:04,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:11:04,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:11:04,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:11:04,639 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:11:04,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:11:04,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:11:04,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:11:04,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:11:04,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:11:04,642 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:11:04,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:11:04,642 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:11:04,642 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:11:04,642 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:11:04,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:11:04,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:11:04,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:11:04,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:11:04,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:11:04,644 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2025-03-14 01:11:04,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:11:04,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:11:04,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:11:04,870 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:11:04,871 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:11:04,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-14 01:11:05,995 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257d9796a/8962d3fce07b41958bfe1bd964cc2794/FLAG5d00a2f6d [2025-03-14 01:11:06,239 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:11:06,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-14 01:11:06,246 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257d9796a/8962d3fce07b41958bfe1bd964cc2794/FLAG5d00a2f6d [2025-03-14 01:11:06,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257d9796a/8962d3fce07b41958bfe1bd964cc2794 [2025-03-14 01:11:06,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:11:06,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:11:06,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:11:06,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:11:06,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:11:06,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fa3121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06, skipping insertion in model container [2025-03-14 01:11:06,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:11:06,408 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/test-easy1.wvr.c[1902,1915] [2025-03-14 01:11:06,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:11:06,420 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:11:06,431 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/test-easy1.wvr.c[1902,1915] [2025-03-14 01:11:06,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:11:06,441 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:11:06,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06 WrapperNode [2025-03-14 01:11:06,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:11:06,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:11:06,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:11:06,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:11:06,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,460 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2025-03-14 01:11:06,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:11:06,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:11:06,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:11:06,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:11:06,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,475 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]. [2025-03-14 01:11:06,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,477 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:11:06,480 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:11:06,480 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:11:06,480 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:11:06,481 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (1/1) ... [2025-03-14 01:11:06,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:11:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:06,506 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) [2025-03-14 01:11:06,508 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 [2025-03-14 01:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:11:06,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:11:06,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:11:06,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:11:06,525 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:11:06,588 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:11:06,589 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:11:06,687 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:11:06,688 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:11:06,688 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:11:06,778 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:11:06,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:11:06 BoogieIcfgContainer [2025-03-14 01:11:06,779 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:11:06,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:11:06,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:11:06,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:11:06,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:11:06" (1/3) ... [2025-03-14 01:11:06,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358fe36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:11:06, skipping insertion in model container [2025-03-14 01:11:06,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:11:06" (2/3) ... [2025-03-14 01:11:06,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358fe36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:11:06, skipping insertion in model container [2025-03-14 01:11:06,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:11:06" (3/3) ... [2025-03-14 01:11:06,787 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2025-03-14 01:11:06,797 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:11:06,798 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy1.wvr.c that has 3 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-14 01:11:06,798 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:11:06,829 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-14 01:11:06,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2025-03-14 01:11:06,868 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-03-14 01:11:06,870 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:11:06,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-03-14 01:11:06,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2025-03-14 01:11:06,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2025-03-14 01:11:06,879 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:11:06,890 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;@5691916d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:11:06,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-14 01:11:06,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:11:06,901 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-14 01:11:06,901 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:11:06,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:06,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:06,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:06,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1224369187, now seen corresponding path program 1 times [2025-03-14 01:11:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997423944] [2025-03-14 01:11:06,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:11:06,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:06,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-14 01:11:06,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-14 01:11:06,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:06,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997423944] [2025-03-14 01:11:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997423944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:07,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:11:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:11:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516045697] [2025-03-14 01:11:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:07,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:11:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:07,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:11:07,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:11:07,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:07,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:07,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:07,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:07,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:07,210 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2025-03-14 01:11:07,212 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-14 01:11:07,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 279 event pairs, 8 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2025-03-14 01:11:07,214 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2025-03-14 01:11:07,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2025-03-14 01:11:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:11:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:11:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-03-14 01:11:07,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2025-03-14 01:11:07,228 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2025-03-14 01:11:07,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2025-03-14 01:11:07,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-14 01:11:07,234 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-03-14 01:11:07,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-03-14 01:11:07,238 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2025-03-14 01:11:07,238 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-03-14 01:11:07,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:07,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:07,239 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:07,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:11:07,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:07,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash 965142117, now seen corresponding path program 1 times [2025-03-14 01:11:07,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:07,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885942094] [2025-03-14 01:11:07,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:11:07,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:07,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 01:11:07,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 01:11:07,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:07,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:07,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885942094] [2025-03-14 01:11:07,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885942094] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:07,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:11:07,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:11:07,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161046425] [2025-03-14 01:11:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:07,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:11:07,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:07,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:11:07,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:11:07,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:07,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:07,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:07,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:07,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:07,456 INFO L124 PetriNetUnfolderBase]: 60/115 cut-off events. [2025-03-14 01:11:07,456 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-14 01:11:07,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 115 events. 60/115 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 324 event pairs, 6 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. [2025-03-14 01:11:07,457 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 26 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2025-03-14 01:11:07,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 38 transitions, 183 flow [2025-03-14 01:11:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:11:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:11:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2025-03-14 01:11:07,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2025-03-14 01:11:07,459 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 58 transitions. [2025-03-14 01:11:07,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 38 transitions, 183 flow [2025-03-14 01:11:07,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:11:07,462 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2025-03-14 01:11:07,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2025-03-14 01:11:07,463 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2025-03-14 01:11:07,463 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2025-03-14 01:11:07,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:07,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:07,464 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:07,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:11:07,464 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:07,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -828600164, now seen corresponding path program 1 times [2025-03-14 01:11:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405535887] [2025-03-14 01:11:07,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:11:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:07,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 01:11:07,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 01:11:07,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:07,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:07,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:07,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405535887] [2025-03-14 01:11:07,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405535887] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:07,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144438597] [2025-03-14 01:11:07,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:11:07,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:07,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:07,545 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) [2025-03-14 01:11:07,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:11:07,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 01:11:07,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 01:11:07,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:07,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:07,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-14 01:11:07,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:07,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:11:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144438597] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:11:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-14 01:11:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786990773] [2025-03-14 01:11:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:07,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:11:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:07,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:11:07,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:11:07,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:07,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:07,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:07,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:07,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:07,831 INFO L124 PetriNetUnfolderBase]: 61/134 cut-off events. [2025-03-14 01:11:07,832 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-14 01:11:07,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 134 events. 61/134 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 453 event pairs, 11 based on Foata normal form. 5/137 useless extension candidates. Maximal degree in co-relation 290. Up to 52 conditions per place. [2025-03-14 01:11:07,833 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2025-03-14 01:11:07,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 256 flow [2025-03-14 01:11:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:11:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:11:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-03-14 01:11:07,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-03-14 01:11:07,839 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 50 transitions. [2025-03-14 01:11:07,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 256 flow [2025-03-14 01:11:07,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 01:11:07,841 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 153 flow [2025-03-14 01:11:07,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2025-03-14 01:11:07,842 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2025-03-14 01:11:07,842 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 153 flow [2025-03-14 01:11:07,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:07,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:07,842 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:07,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-14 01:11:08,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:08,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:08,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash -518786202, now seen corresponding path program 2 times [2025-03-14 01:11:08,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:08,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681571863] [2025-03-14 01:11:08,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:11:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:08,050 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-14 01:11:08,057 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 01:11:08,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:11:08,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681571863] [2025-03-14 01:11:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681571863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:11:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:11:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934648127] [2025-03-14 01:11:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:08,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:11:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:08,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:11:08,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:11:08,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:08,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:08,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:08,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:08,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:08,154 INFO L124 PetriNetUnfolderBase]: 51/111 cut-off events. [2025-03-14 01:11:08,154 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2025-03-14 01:11:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 111 events. 51/111 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 328 event pairs, 6 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 276. Up to 39 conditions per place. [2025-03-14 01:11:08,156 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2025-03-14 01:11:08,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 291 flow [2025-03-14 01:11:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:11:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:11:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-03-14 01:11:08,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-03-14 01:11:08,158 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 153 flow. Second operand 5 states and 55 transitions. [2025-03-14 01:11:08,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 291 flow [2025-03-14 01:11:08,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 287 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-14 01:11:08,162 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 172 flow [2025-03-14 01:11:08,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-03-14 01:11:08,163 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2025-03-14 01:11:08,164 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 172 flow [2025-03-14 01:11:08,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:08,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:08,164 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:08,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:11:08,165 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:08,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 494082209, now seen corresponding path program 2 times [2025-03-14 01:11:08,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:08,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52711664] [2025-03-14 01:11:08,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:11:08,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:08,170 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-14 01:11:08,173 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 01:11:08,174 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:11:08,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:08,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:08,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52711664] [2025-03-14 01:11:08,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52711664] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:08,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254871645] [2025-03-14 01:11:08,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:11:08,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:08,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:08,222 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) [2025-03-14 01:11:08,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:11:08,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-14 01:11:08,259 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 01:11:08,259 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:11:08,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:08,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 01:11:08,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:08,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:11:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:08,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254871645] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:08,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:11:08,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 8 [2025-03-14 01:11:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132205760] [2025-03-14 01:11:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:08,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:11:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:08,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:11:08,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:11:08,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:08,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:08,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:08,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:08,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:08,458 INFO L124 PetriNetUnfolderBase]: 77/163 cut-off events. [2025-03-14 01:11:08,458 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2025-03-14 01:11:08,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 163 events. 77/163 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 548 event pairs, 5 based on Foata normal form. 2/164 useless extension candidates. Maximal degree in co-relation 347. Up to 61 conditions per place. [2025-03-14 01:11:08,459 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 13 changer transitions 4/53 dead transitions. [2025-03-14 01:11:08,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 419 flow [2025-03-14 01:11:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:11:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:11:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2025-03-14 01:11:08,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-03-14 01:11:08,460 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 172 flow. Second operand 5 states and 63 transitions. [2025-03-14 01:11:08,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 419 flow [2025-03-14 01:11:08,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 398 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-14 01:11:08,463 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 282 flow [2025-03-14 01:11:08,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2025-03-14 01:11:08,463 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 22 predicate places. [2025-03-14 01:11:08,463 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 282 flow [2025-03-14 01:11:08,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:08,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:08,464 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:08,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-14 01:11:08,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:08,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:08,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash -327222206, now seen corresponding path program 1 times [2025-03-14 01:11:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:08,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461479113] [2025-03-14 01:11:08,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:11:08,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:08,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-14 01:11:08,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:08,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:08,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461479113] [2025-03-14 01:11:08,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461479113] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884891750] [2025-03-14 01:11:08,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:11:08,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:08,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:08,816 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) [2025-03-14 01:11:08,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 01:11:08,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-14 01:11:08,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:08,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:08,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:08,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:11:08,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:08,904 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:11:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884891750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:11:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2025-03-14 01:11:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355016367] [2025-03-14 01:11:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:08,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:11:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:08,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:11:08,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:11:08,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:08,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:08,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:08,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:08,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:08,973 INFO L124 PetriNetUnfolderBase]: 73/152 cut-off events. [2025-03-14 01:11:08,973 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2025-03-14 01:11:08,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 152 events. 73/152 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 481 event pairs, 3 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 505. Up to 57 conditions per place. [2025-03-14 01:11:08,975 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 26 selfloop transitions, 4 changer transitions 20/53 dead transitions. [2025-03-14 01:11:08,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 495 flow [2025-03-14 01:11:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:11:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:11:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2025-03-14 01:11:08,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-03-14 01:11:08,976 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 282 flow. Second operand 6 states and 64 transitions. [2025-03-14 01:11:08,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 495 flow [2025-03-14 01:11:08,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 455 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-03-14 01:11:08,983 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 222 flow [2025-03-14 01:11:08,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2025-03-14 01:11:08,984 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2025-03-14 01:11:08,985 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 222 flow [2025-03-14 01:11:08,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:08,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:08,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:08,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-14 01:11:09,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:09,186 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:09,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1475200382, now seen corresponding path program 2 times [2025-03-14 01:11:09,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:09,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147779064] [2025-03-14 01:11:09,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:11:09,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:09,191 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-14 01:11:09,195 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:09,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:11:09,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:09,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:09,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147779064] [2025-03-14 01:11:09,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147779064] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:09,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044958643] [2025-03-14 01:11:09,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:11:09,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:09,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:09,258 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) [2025-03-14 01:11:09,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 01:11:09,283 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-14 01:11:09,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:09,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:11:09,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:09,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:11:09,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:09,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:11:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044958643] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:09,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:11:09,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2025-03-14 01:11:09,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194287174] [2025-03-14 01:11:09,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:09,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:11:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:09,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:11:09,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:11:09,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:09,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:09,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:09,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:09,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:09,394 INFO L124 PetriNetUnfolderBase]: 41/84 cut-off events. [2025-03-14 01:11:09,394 INFO L125 PetriNetUnfolderBase]: For 375/375 co-relation queries the response was YES. [2025-03-14 01:11:09,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 84 events. 41/84 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 188 event pairs, 6 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 409. Up to 31 conditions per place. [2025-03-14 01:11:09,395 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 4 changer transitions 11/38 dead transitions. [2025-03-14 01:11:09,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 347 flow [2025-03-14 01:11:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:11:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:11:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2025-03-14 01:11:09,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-03-14 01:11:09,396 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 222 flow. Second operand 6 states and 56 transitions. [2025-03-14 01:11:09,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 347 flow [2025-03-14 01:11:09,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 320 flow, removed 5 selfloop flow, removed 6 redundant places. [2025-03-14 01:11:09,399 INFO L231 Difference]: Finished difference. Result has 46 places, 22 transitions, 162 flow [2025-03-14 01:11:09,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=22} [2025-03-14 01:11:09,399 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 26 predicate places. [2025-03-14 01:11:09,399 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 22 transitions, 162 flow [2025-03-14 01:11:09,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:09,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:09,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:09,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-14 01:11:09,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:09,604 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:09,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1469870042, now seen corresponding path program 3 times [2025-03-14 01:11:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064813818] [2025-03-14 01:11:09,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:11:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:09,609 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-03-14 01:11:09,613 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:09,613 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:11:09,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064813818] [2025-03-14 01:11:09,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064813818] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057819366] [2025-03-14 01:11:09,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:11:09,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:09,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:09,677 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) [2025-03-14 01:11:09,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 01:11:09,703 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-03-14 01:11:09,711 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:09,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:11:09,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:09,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:11:09,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:09,751 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:11:09,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057819366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:09,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:11:09,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2025-03-14 01:11:09,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586684512] [2025-03-14 01:11:09,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:09,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:11:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:09,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:11:09,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:11:09,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:09,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 22 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:09,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:09,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:09,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:09,796 INFO L124 PetriNetUnfolderBase]: 39/89 cut-off events. [2025-03-14 01:11:09,796 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2025-03-14 01:11:09,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 89 events. 39/89 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 212 event pairs, 9 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 408. Up to 31 conditions per place. [2025-03-14 01:11:09,797 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 23 selfloop transitions, 7 changer transitions 4/37 dead transitions. [2025-03-14 01:11:09,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 37 transitions, 314 flow [2025-03-14 01:11:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:11:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:11:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2025-03-14 01:11:09,798 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2025-03-14 01:11:09,798 INFO L175 Difference]: Start difference. First operand has 46 places, 22 transitions, 162 flow. Second operand 6 states and 59 transitions. [2025-03-14 01:11:09,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 37 transitions, 314 flow [2025-03-14 01:11:09,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 273 flow, removed 8 selfloop flow, removed 8 redundant places. [2025-03-14 01:11:09,799 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 184 flow [2025-03-14 01:11:09,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2025-03-14 01:11:09,800 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2025-03-14 01:11:09,800 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 184 flow [2025-03-14 01:11:09,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:09,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:09,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:09,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-14 01:11:10,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:10,001 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:10,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -985000508, now seen corresponding path program 4 times [2025-03-14 01:11:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921917212] [2025-03-14 01:11:10,001 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:11:10,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:10,005 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-14 01:11:10,008 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:10,008 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:11:10,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921917212] [2025-03-14 01:11:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921917212] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434249856] [2025-03-14 01:11:10,053 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:11:10,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:10,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:10,055 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) [2025-03-14 01:11:10,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 01:11:10,083 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-14 01:11:10,092 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 01:11:10,092 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:11:10,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:10,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:11:10,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:10,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:11:10,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434249856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:10,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:11:10,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2025-03-14 01:11:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392191648] [2025-03-14 01:11:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:10,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:11:10,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:10,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:11:10,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-14 01:11:10,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:10,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:10,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:10,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:10,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:10,183 INFO L124 PetriNetUnfolderBase]: 37/81 cut-off events. [2025-03-14 01:11:10,183 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2025-03-14 01:11:10,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 81 events. 37/81 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 181 event pairs, 9 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 383. Up to 31 conditions per place. [2025-03-14 01:11:10,184 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 15 selfloop transitions, 1 changer transitions 16/35 dead transitions. [2025-03-14 01:11:10,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 35 transitions, 306 flow [2025-03-14 01:11:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:11:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:11:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2025-03-14 01:11:10,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-03-14 01:11:10,186 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 184 flow. Second operand 6 states and 57 transitions. [2025-03-14 01:11:10,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 35 transitions, 306 flow [2025-03-14 01:11:10,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 297 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-14 01:11:10,188 INFO L231 Difference]: Finished difference. Result has 48 places, 18 transitions, 108 flow [2025-03-14 01:11:10,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=48, PETRI_TRANSITIONS=18} [2025-03-14 01:11:10,188 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2025-03-14 01:11:10,189 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 18 transitions, 108 flow [2025-03-14 01:11:10,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:10,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:10,190 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:10,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-14 01:11:10,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:10,390 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:10,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1843218593, now seen corresponding path program 5 times [2025-03-14 01:11:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:10,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255182963] [2025-03-14 01:11:10,391 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:11:10,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:10,396 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-14 01:11:10,399 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:11:10,400 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:11:10,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255182963] [2025-03-14 01:11:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255182963] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083824926] [2025-03-14 01:11:10,444 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:11:10,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:10,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:10,446 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) [2025-03-14 01:11:10,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 01:11:10,471 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-14 01:11:10,480 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:11:10,480 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:11:10,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:10,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-14 01:11:10,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:10,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:11:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:10,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083824926] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:11:10,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:11:10,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-14 01:11:10,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993387287] [2025-03-14 01:11:10,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:11:10,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:11:10,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:10,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:11:10,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:11:10,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:10,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 18 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:10,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:10,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:10,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:10,671 INFO L124 PetriNetUnfolderBase]: 21/54 cut-off events. [2025-03-14 01:11:10,671 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2025-03-14 01:11:10,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 54 events. 21/54 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 5/58 useless extension candidates. Maximal degree in co-relation 239. Up to 19 conditions per place. [2025-03-14 01:11:10,672 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 3/32 dead transitions. [2025-03-14 01:11:10,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 222 flow [2025-03-14 01:11:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:11:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:11:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 71 transitions. [2025-03-14 01:11:10,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2025-03-14 01:11:10,674 INFO L175 Difference]: Start difference. First operand has 48 places, 18 transitions, 108 flow. Second operand 8 states and 71 transitions. [2025-03-14 01:11:10,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 222 flow [2025-03-14 01:11:10,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 193 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-03-14 01:11:10,675 INFO L231 Difference]: Finished difference. Result has 44 places, 19 transitions, 115 flow [2025-03-14 01:11:10,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=115, PETRI_PLACES=44, PETRI_TRANSITIONS=19} [2025-03-14 01:11:10,675 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2025-03-14 01:11:10,675 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 19 transitions, 115 flow [2025-03-14 01:11:10,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:11:10,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:10,675 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:10,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-14 01:11:10,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:10,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:10,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1388007301, now seen corresponding path program 6 times [2025-03-14 01:11:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:10,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659944250] [2025-03-14 01:11:10,877 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:11:10,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:10,881 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-03-14 01:11:10,885 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-03-14 01:11:10,885 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-14 01:11:10,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:11:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659944250] [2025-03-14 01:11:10,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659944250] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308159924] [2025-03-14 01:11:10,947 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:11:10,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:10,950 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) [2025-03-14 01:11:10,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-14 01:11:10,976 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-03-14 01:11:10,985 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-03-14 01:11:10,985 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-14 01:11:10,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:10,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:11:10,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:11:11,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:11:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308159924] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:11:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2025-03-14 01:11:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733477681] [2025-03-14 01:11:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:11,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:11:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:11,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:11:11,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:11:11,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:11,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 19 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2025-03-14 01:11:11,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:11,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:11,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:11,069 INFO L124 PetriNetUnfolderBase]: 19/53 cut-off events. [2025-03-14 01:11:11,070 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2025-03-14 01:11:11,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 53 events. 19/53 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 172. Up to 18 conditions per place. [2025-03-14 01:11:11,070 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 19 selfloop transitions, 3 changer transitions 4/29 dead transitions. [2025-03-14 01:11:11,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 29 transitions, 197 flow [2025-03-14 01:11:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:11:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:11:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2025-03-14 01:11:11,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2025-03-14 01:11:11,071 INFO L175 Difference]: Start difference. First operand has 44 places, 19 transitions, 115 flow. Second operand 6 states and 55 transitions. [2025-03-14 01:11:11,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 29 transitions, 197 flow [2025-03-14 01:11:11,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 29 transitions, 168 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-03-14 01:11:11,072 INFO L231 Difference]: Finished difference. Result has 43 places, 19 transitions, 97 flow [2025-03-14 01:11:11,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=19} [2025-03-14 01:11:11,073 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 23 predicate places. [2025-03-14 01:11:11,073 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 19 transitions, 97 flow [2025-03-14 01:11:11,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2025-03-14 01:11:11,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:11:11,073 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:11:11,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-14 01:11:11,274 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,SelfDestructingSolverStorable10 [2025-03-14 01:11:11,274 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:11:11,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:11:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1219158257, now seen corresponding path program 7 times [2025-03-14 01:11:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:11:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747825170] [2025-03-14 01:11:11,275 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:11:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:11:11,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-14 01:11:11,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-14 01:11:11,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:11,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:11:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:11:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747825170] [2025-03-14 01:11:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747825170] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:11:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368356209] [2025-03-14 01:11:11,374 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:11:11,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:11,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:11:11,376 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) [2025-03-14 01:11:11,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-14 01:11:11,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-14 01:11:11,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-14 01:11:11,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:11:11,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:11:11,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:11:11,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:11:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:11:11,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:11:11,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368356209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:11:11,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:11:11,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2025-03-14 01:11:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015117197] [2025-03-14 01:11:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:11:11,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:11:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:11:11,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:11:11,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:11:11,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-14 01:11:11,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 19 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2025-03-14 01:11:11,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:11:11,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-14 01:11:11,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:11:11,490 INFO L124 PetriNetUnfolderBase]: 18/46 cut-off events. [2025-03-14 01:11:11,490 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2025-03-14 01:11:11,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 46 events. 18/46 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 0 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 179. Up to 18 conditions per place. [2025-03-14 01:11:11,490 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2025-03-14 01:11:11,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 25 transitions, 164 flow [2025-03-14 01:11:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:11:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:11:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 52 transitions. [2025-03-14 01:11:11,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-03-14 01:11:11,491 INFO L175 Difference]: Start difference. First operand has 43 places, 19 transitions, 97 flow. Second operand 6 states and 52 transitions. [2025-03-14 01:11:11,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 25 transitions, 164 flow [2025-03-14 01:11:11,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 25 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-14 01:11:11,491 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2025-03-14 01:11:11,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2025-03-14 01:11:11,492 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 22 predicate places. [2025-03-14 01:11:11,492 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2025-03-14 01:11:11,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2025-03-14 01:11:11,494 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-14 01:11:11,495 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-14 01:11:11,495 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-14 01:11:11,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-14 01:11:11,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:11:11,696 INFO L422 BasicCegarLoop]: Path program histogram: [7, 2, 2, 1] [2025-03-14 01:11:11,699 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-14 01:11:11,699 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-14 01:11:11,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.03 01:11:11 BasicIcfg [2025-03-14 01:11:11,703 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-14 01:11:11,703 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-14 01:11:11,703 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-14 01:11:11,703 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-14 01:11:11,704 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:11:06" (3/4) ... [2025-03-14 01:11:11,706 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-14 01:11:11,708 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-14 01:11:11,708 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-14 01:11:11,710 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2025-03-14 01:11:11,710 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-14 01:11:11,711 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-14 01:11:11,711 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-14 01:11:11,762 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-14 01:11:11,762 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-14 01:11:11,762 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-14 01:11:11,763 INFO L158 Benchmark]: Toolchain (without parser) took 5500.38ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 105.8MB in the end (delta: 16.6MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2025-03-14 01:11:11,763 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 01:11:11,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.57ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 110.9MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-14 01:11:11,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.44ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 109.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 01:11:11,763 INFO L158 Benchmark]: Boogie Preprocessor took 18.49ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 108.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 01:11:11,763 INFO L158 Benchmark]: IcfgBuilder took 298.91ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 86.4MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-14 01:11:11,763 INFO L158 Benchmark]: TraceAbstraction took 4922.57ms. Allocated memory is still 167.8MB. Free memory was 86.0MB in the beginning and 110.9MB in the end (delta: -24.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 01:11:11,763 INFO L158 Benchmark]: Witness Printer took 58.73ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 105.8MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-14 01:11:11,764 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.57ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 110.9MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.44ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 109.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.49ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 108.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 298.91ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 86.4MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4922.57ms. Allocated memory is still 167.8MB. Free memory was 86.0MB in the beginning and 110.9MB in the end (delta: -24.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.73ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 105.8MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 673 IncrementalHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 0 mSDtfsCounter, 673 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 810 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 24 InterpolantComputations, 11 PerfectInterpolantSequences, 37/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-14 01:11:11,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE