./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 8fc3dc66 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-?-8fc3dc6-m [2025-03-17 06:46:43,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:46:43,098 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:46:43,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:46:43,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:46:43,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:46:43,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:46:43,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:46:43,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:46:43,117 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:46:43,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:46:43,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:46:43,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:46:43,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:46:43,118 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:46:43,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:46:43,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:46:43,118 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:46:43,118 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:46:43,119 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:46:43,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:46:43,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:46:43,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:46:43,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:46:43,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:46:43,121 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 [2025-03-17 06:46:43,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:46:43,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:46:43,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:46:43,425 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:46:43,426 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:46:43,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-17 06:46:44,569 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07fa7eed9/6c47389fc4714cc68f0c94edf4cbaad5/FLAGf9d49f512 [2025-03-17 06:46:44,836 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:46:44,841 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-17 06:46:44,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07fa7eed9/6c47389fc4714cc68f0c94edf4cbaad5/FLAGf9d49f512 [2025-03-17 06:46:44,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07fa7eed9/6c47389fc4714cc68f0c94edf4cbaad5 [2025-03-17 06:46:44,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:46:44,887 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:46:44,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:46:44,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:46:44,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:46:44,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:46:44" (1/1) ... [2025-03-17 06:46:44,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec176d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:44, skipping insertion in model container [2025-03-17 06:46:44,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:46:44" (1/1) ... [2025-03-17 06:46:44,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:46:45,034 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] [2025-03-17 06:46:45,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:46:45,045 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:46:45,058 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] [2025-03-17 06:46:45,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:46:45,070 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:46:45,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45 WrapperNode [2025-03-17 06:46:45,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:46:45,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:46:45,072 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:46:45,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:46:45,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,094 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2025-03-17 06:46:45,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:46:45,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:46:45,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:46:45,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:46:45,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,117 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]. [2025-03-17 06:46:45,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,122 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:46:45,129 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:46:45,129 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:46:45,129 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:46:45,130 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:46:45,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:45,154 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) [2025-03-17 06:46:45,159 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 [2025-03-17 06:46:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:46:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:46:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:46:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:46:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:46:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:46:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:46:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:46:45,176 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:46:45,241 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:46:45,242 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:46:45,352 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:46:45,352 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:46:45,442 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:46:45,442 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:46:45,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:46:45 BoogieIcfgContainer [2025-03-17 06:46:45,443 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:46:45,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:46:45,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:46:45,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:46:45,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:46:44" (1/3) ... [2025-03-17 06:46:45,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad4ecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:46:45, skipping insertion in model container [2025-03-17 06:46:45,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (2/3) ... [2025-03-17 06:46:45,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad4ecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:46:45, skipping insertion in model container [2025-03-17 06:46:45,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:46:45" (3/3) ... [2025-03-17 06:46:45,451 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2025-03-17 06:46:45,462 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:46:45,463 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. [2025-03-17 06:46:45,464 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:46:45,495 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 06:46:45,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2025-03-17 06:46:45,545 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-03-17 06:46:45,552 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:46:45,554 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. [2025-03-17 06:46:45,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2025-03-17 06:46:45,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2025-03-17 06:46:45,563 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:46:45,573 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;@36f64d82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:46:45,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-17 06:46:45,585 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:46:45,586 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-17 06:46:45,586 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:46:45,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:45,587 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:45,587 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:45,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2058659066, now seen corresponding path program 1 times [2025-03-17 06:46:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:45,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693834854] [2025-03-17 06:46:45,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:45,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 06:46:45,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 06:46:45,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:45,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:45,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:45,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693834854] [2025-03-17 06:46:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693834854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:45,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:45,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:46:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185323299] [2025-03-17 06:46:45,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:45,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:46:45,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:45,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:46:45,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:46:45,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:45,853 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) [2025-03-17 06:46:45,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:45,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:45,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:45,929 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2025-03-17 06:46:45,929 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-17 06:46:45,930 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 286 event pairs, 8 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2025-03-17 06:46:45,933 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2025-03-17 06:46:45,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2025-03-17 06:46:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:46:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:46:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-03-17 06:46:45,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2025-03-17 06:46:45,945 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2025-03-17 06:46:45,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2025-03-17 06:46:45,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:45,953 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-03-17 06:46:45,956 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} [2025-03-17 06:46:45,958 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2025-03-17 06:46:45,960 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-03-17 06:46:45,960 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) [2025-03-17 06:46:45,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:45,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:45,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:46:45,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:45,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2024483129, now seen corresponding path program 1 times [2025-03-17 06:46:45,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:45,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290306737] [2025-03-17 06:46:45,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:45,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:46:45,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:46:45,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:45,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:46,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:46,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290306737] [2025-03-17 06:46:46,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290306737] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:46,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:46,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:46:46,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014377605] [2025-03-17 06:46:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:46,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:46:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:46,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:46:46,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:46:46,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:46,050 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) [2025-03-17 06:46:46,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:46,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:46,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:46,177 INFO L124 PetriNetUnfolderBase]: 60/115 cut-off events. [2025-03-17 06:46:46,177 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-17 06:46:46,177 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 18. Compared 329 event pairs, 6 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. [2025-03-17 06:46:46,178 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 26 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2025-03-17 06:46:46,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 38 transitions, 183 flow [2025-03-17 06:46:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:46:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:46:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2025-03-17 06:46:46,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2025-03-17 06:46:46,182 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 58 transitions. [2025-03-17 06:46:46,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 38 transitions, 183 flow [2025-03-17 06:46:46,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:46:46,184 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2025-03-17 06:46:46,184 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} [2025-03-17 06:46:46,185 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2025-03-17 06:46:46,185 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2025-03-17 06:46:46,186 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) [2025-03-17 06:46:46,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:46,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:46,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:46:46,186 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:46,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1100764806, now seen corresponding path program 1 times [2025-03-17 06:46:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313964160] [2025-03-17 06:46:46,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:46,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:46,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:46:46,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:46:46,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:46,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313964160] [2025-03-17 06:46:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313964160] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:46,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975776264] [2025-03-17 06:46:46,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:46,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:46,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:46,278 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) [2025-03-17 06:46:46,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:46:46,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:46:46,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:46:46,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:46,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:46,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 06:46:46,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:46,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:46,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975776264] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:46,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:46,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-17 06:46:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904167872] [2025-03-17 06:46:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:46,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:46:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:46,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:46:46,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:46:46,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:46,483 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) [2025-03-17 06:46:46,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:46,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:46,548 INFO L124 PetriNetUnfolderBase]: 61/134 cut-off events. [2025-03-17 06:46:46,549 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-17 06:46:46,549 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 446 event pairs, 11 based on Foata normal form. 5/139 useless extension candidates. Maximal degree in co-relation 290. Up to 52 conditions per place. [2025-03-17 06:46:46,550 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2025-03-17 06:46:46,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 256 flow [2025-03-17 06:46:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:46:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:46:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-03-17 06:46:46,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-03-17 06:46:46,553 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 50 transitions. [2025-03-17 06:46:46,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 256 flow [2025-03-17 06:46:46,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 06:46:46,557 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 153 flow [2025-03-17 06:46:46,558 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} [2025-03-17 06:46:46,558 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2025-03-17 06:46:46,559 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 153 flow [2025-03-17 06:46:46,559 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) [2025-03-17 06:46:46,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:46,560 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:46,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:46:46,760 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 [2025-03-17 06:46:46,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:46,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash 786555848, now seen corresponding path program 2 times [2025-03-17 06:46:46,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:46,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782784950] [2025-03-17 06:46:46,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:46,769 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-17 06:46:46,781 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:46:46,785 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:46,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782784950] [2025-03-17 06:46:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782784950] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:46,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:46,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:46:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48571874] [2025-03-17 06:46:46,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:46,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:46:46,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:46,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:46:46,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:46:46,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:46,849 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) [2025-03-17 06:46:46,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:46,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:46,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:46,921 INFO L124 PetriNetUnfolderBase]: 51/111 cut-off events. [2025-03-17 06:46:46,924 INFO L125 PetriNetUnfolderBase]: For 239/241 co-relation queries the response was YES. [2025-03-17 06:46:46,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 111 events. 51/111 cut-off events. For 239/241 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 326 event pairs, 6 based on Foata normal form. 2/113 useless extension candidates. Maximal degree in co-relation 276. Up to 39 conditions per place. [2025-03-17 06:46:46,926 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2025-03-17 06:46:46,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 291 flow [2025-03-17 06:46:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:46:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:46:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-03-17 06:46:46,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-03-17 06:46:46,929 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 153 flow. Second operand 5 states and 55 transitions. [2025-03-17 06:46:46,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 291 flow [2025-03-17 06:46:46,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 287 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-17 06:46:46,932 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 172 flow [2025-03-17 06:46:46,932 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} [2025-03-17 06:46:46,933 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2025-03-17 06:46:46,933 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 172 flow [2025-03-17 06:46:46,934 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) [2025-03-17 06:46:46,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:46,934 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:46,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:46:46,934 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:46,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash 99098699, now seen corresponding path program 2 times [2025-03-17 06:46:46,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:46,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722211326] [2025-03-17 06:46:46,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:46,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-17 06:46:46,947 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:46:46,951 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:46,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:47,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:47,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722211326] [2025-03-17 06:46:47,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722211326] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:47,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16542592] [2025-03-17 06:46:47,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:47,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:47,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:47,002 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) [2025-03-17 06:46:47,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:46:47,032 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-17 06:46:47,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:46:47,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:47,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:47,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 06:46:47,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:47,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:47,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16542592] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:47,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:47,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 8 [2025-03-17 06:46:47,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527071638] [2025-03-17 06:46:47,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:47,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:47,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:47,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:47,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:47,247 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) [2025-03-17 06:46:47,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:47,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:47,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:47,325 INFO L124 PetriNetUnfolderBase]: 77/163 cut-off events. [2025-03-17 06:46:47,325 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2025-03-17 06:46:47,326 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 539 event pairs, 5 based on Foata normal form. 2/165 useless extension candidates. Maximal degree in co-relation 347. Up to 61 conditions per place. [2025-03-17 06:46:47,327 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 13 changer transitions 4/53 dead transitions. [2025-03-17 06:46:47,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 419 flow [2025-03-17 06:46:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:46:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:46:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2025-03-17 06:46:47,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-03-17 06:46:47,329 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 172 flow. Second operand 5 states and 63 transitions. [2025-03-17 06:46:47,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 419 flow [2025-03-17 06:46:47,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 398 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-17 06:46:47,332 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 282 flow [2025-03-17 06:46:47,332 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} [2025-03-17 06:46:47,333 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 22 predicate places. [2025-03-17 06:46:47,333 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 282 flow [2025-03-17 06:46:47,333 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) [2025-03-17 06:46:47,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:47,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:47,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:46:47,533 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 [2025-03-17 06:46:47,534 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:47,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash -235259883, now seen corresponding path program 1 times [2025-03-17 06:46:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:47,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752068546] [2025-03-17 06:46:47,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:47,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:47,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 06:46:47,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:47,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:47,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:47,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752068546] [2025-03-17 06:46:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752068546] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080123215] [2025-03-17 06:46:47,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:47,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:47,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:47,666 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) [2025-03-17 06:46:47,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:46:47,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 06:46:47,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:47,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:47,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:47,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:46:47,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:47,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:46:47,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080123215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:47,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:46:47,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2025-03-17 06:46:47,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883864424] [2025-03-17 06:46:47,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:47,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:46:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:47,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:46:47,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:46:47,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:47,771 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) [2025-03-17 06:46:47,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:47,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:47,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:47,835 INFO L124 PetriNetUnfolderBase]: 73/152 cut-off events. [2025-03-17 06:46:47,835 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2025-03-17 06:46:47,836 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 488 event pairs, 3 based on Foata normal form. 2/154 useless extension candidates. Maximal degree in co-relation 505. Up to 57 conditions per place. [2025-03-17 06:46:47,837 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 26 selfloop transitions, 4 changer transitions 20/53 dead transitions. [2025-03-17 06:46:47,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 495 flow [2025-03-17 06:46:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2025-03-17 06:46:47,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-03-17 06:46:47,838 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 282 flow. Second operand 6 states and 64 transitions. [2025-03-17 06:46:47,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 495 flow [2025-03-17 06:46:47,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 455 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-03-17 06:46:47,842 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 222 flow [2025-03-17 06:46:47,842 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} [2025-03-17 06:46:47,842 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2025-03-17 06:46:47,843 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 222 flow [2025-03-17 06:46:47,843 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) [2025-03-17 06:46:47,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:47,843 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:47,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:46:48,043 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 [2025-03-17 06:46:48,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:48,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1008866239, now seen corresponding path program 2 times [2025-03-17 06:46:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:48,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761050249] [2025-03-17 06:46:48,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:48,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:48,053 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 06:46:48,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:48,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:48,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:48,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761050249] [2025-03-17 06:46:48,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761050249] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47129020] [2025-03-17 06:46:48,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:48,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:48,163 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) [2025-03-17 06:46:48,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:46:48,192 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 06:46:48,202 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:48,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:48,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:48,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:46:48,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:48,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:46:48,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47129020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:48,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:46:48,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2025-03-17 06:46:48,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550575003] [2025-03-17 06:46:48,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:48,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:46:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:48,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:46:48,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:46:48,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:48,255 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) [2025-03-17 06:46:48,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:48,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:48,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:48,315 INFO L124 PetriNetUnfolderBase]: 41/84 cut-off events. [2025-03-17 06:46:48,315 INFO L125 PetriNetUnfolderBase]: For 396/398 co-relation queries the response was YES. [2025-03-17 06:46:48,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 84 events. 41/84 cut-off events. For 396/398 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 180 event pairs, 6 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 409. Up to 31 conditions per place. [2025-03-17 06:46:48,316 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 4 changer transitions 11/38 dead transitions. [2025-03-17 06:46:48,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 347 flow [2025-03-17 06:46:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2025-03-17 06:46:48,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-03-17 06:46:48,317 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 222 flow. Second operand 6 states and 56 transitions. [2025-03-17 06:46:48,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 347 flow [2025-03-17 06:46:48,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 320 flow, removed 5 selfloop flow, removed 6 redundant places. [2025-03-17 06:46:48,319 INFO L231 Difference]: Finished difference. Result has 46 places, 22 transitions, 162 flow [2025-03-17 06:46:48,319 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} [2025-03-17 06:46:48,320 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 26 predicate places. [2025-03-17 06:46:48,320 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 22 transitions, 162 flow [2025-03-17 06:46:48,320 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) [2025-03-17 06:46:48,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:48,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:48,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 06:46:48,524 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 [2025-03-17 06:46:48,524 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:48,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1014196579, now seen corresponding path program 3 times [2025-03-17 06:46:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453954236] [2025-03-17 06:46:48,525 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:48,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:48,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-03-17 06:46:48,539 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:48,541 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:46:48,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:48,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453954236] [2025-03-17 06:46:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453954236] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:48,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638901060] [2025-03-17 06:46:48,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:48,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:48,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:48,622 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) [2025-03-17 06:46:48,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 06:46:48,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-03-17 06:46:48,674 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:48,674 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:46:48,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:48,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:46:48,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:48,727 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:46:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638901060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:48,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:46:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2025-03-17 06:46:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737130206] [2025-03-17 06:46:48,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:48,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:46:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:48,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:46:48,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:46:48,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:48,729 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) [2025-03-17 06:46:48,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:48,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:48,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:48,780 INFO L124 PetriNetUnfolderBase]: 39/89 cut-off events. [2025-03-17 06:46:48,781 INFO L125 PetriNetUnfolderBase]: For 444/446 co-relation queries the response was YES. [2025-03-17 06:46:48,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 89 events. 39/89 cut-off events. For 444/446 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 9 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 408. Up to 31 conditions per place. [2025-03-17 06:46:48,782 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 23 selfloop transitions, 7 changer transitions 4/37 dead transitions. [2025-03-17 06:46:48,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 37 transitions, 314 flow [2025-03-17 06:46:48,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2025-03-17 06:46:48,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2025-03-17 06:46:48,783 INFO L175 Difference]: Start difference. First operand has 46 places, 22 transitions, 162 flow. Second operand 6 states and 59 transitions. [2025-03-17 06:46:48,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 37 transitions, 314 flow [2025-03-17 06:46:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 273 flow, removed 8 selfloop flow, removed 8 redundant places. [2025-03-17 06:46:48,785 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 184 flow [2025-03-17 06:46:48,785 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} [2025-03-17 06:46:48,786 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2025-03-17 06:46:48,786 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 184 flow [2025-03-17 06:46:48,786 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) [2025-03-17 06:46:48,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:48,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:48,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 06:46:48,987 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 [2025-03-17 06:46:48,987 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:48,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 825900167, now seen corresponding path program 4 times [2025-03-17 06:46:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:48,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554537007] [2025-03-17 06:46:48,988 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:48,996 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-17 06:46:49,001 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:49,001 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:49,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:49,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554537007] [2025-03-17 06:46:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554537007] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304474353] [2025-03-17 06:46:49,040 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:49,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:49,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:49,043 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) [2025-03-17 06:46:49,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 06:46:49,071 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-17 06:46:49,081 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 06:46:49,081 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:49,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:46:49,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:49,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:46:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304474353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:49,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:46:49,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2025-03-17 06:46:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197221064] [2025-03-17 06:46:49,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:49,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:46:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:49,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:46:49,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:46:49,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:49,130 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) [2025-03-17 06:46:49,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:49,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:49,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:49,197 INFO L124 PetriNetUnfolderBase]: 37/81 cut-off events. [2025-03-17 06:46:49,198 INFO L125 PetriNetUnfolderBase]: For 339/341 co-relation queries the response was YES. [2025-03-17 06:46:49,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 81 events. 37/81 cut-off events. For 339/341 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 9 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 383. Up to 31 conditions per place. [2025-03-17 06:46:49,199 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 15 selfloop transitions, 1 changer transitions 16/35 dead transitions. [2025-03-17 06:46:49,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 35 transitions, 306 flow [2025-03-17 06:46:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2025-03-17 06:46:49,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-03-17 06:46:49,200 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 184 flow. Second operand 6 states and 57 transitions. [2025-03-17 06:46:49,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 35 transitions, 306 flow [2025-03-17 06:46:49,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 297 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 06:46:49,202 INFO L231 Difference]: Finished difference. Result has 48 places, 18 transitions, 108 flow [2025-03-17 06:46:49,202 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} [2025-03-17 06:46:49,203 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2025-03-17 06:46:49,203 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 18 transitions, 108 flow [2025-03-17 06:46:49,203 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) [2025-03-17 06:46:49,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:49,203 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:49,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 06:46:49,404 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 [2025-03-17 06:46:49,404 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:49,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:49,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1510539973, now seen corresponding path program 5 times [2025-03-17 06:46:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:49,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198342570] [2025-03-17 06:46:49,405 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:49,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:49,409 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 06:46:49,412 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 06:46:49,412 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:49,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198342570] [2025-03-17 06:46:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198342570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483242690] [2025-03-17 06:46:49,456 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:49,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:49,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:49,461 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) [2025-03-17 06:46:49,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 06:46:49,490 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 06:46:49,502 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 06:46:49,502 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:49,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:46:49,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:49,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483242690] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:46:49,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:46:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-17 06:46:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551579992] [2025-03-17 06:46:49,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:46:49,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:46:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:49,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:46:49,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:46:49,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:49,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 18 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:46:49,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:49,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:49,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:49,734 INFO L124 PetriNetUnfolderBase]: 21/54 cut-off events. [2025-03-17 06:46:49,734 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2025-03-17 06:46:49,735 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 88 event pairs, 0 based on Foata normal form. 5/59 useless extension candidates. Maximal degree in co-relation 239. Up to 19 conditions per place. [2025-03-17 06:46:49,735 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 3/32 dead transitions. [2025-03-17 06:46:49,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 222 flow [2025-03-17 06:46:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:46:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 06:46:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 71 transitions. [2025-03-17 06:46:49,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2025-03-17 06:46:49,738 INFO L175 Difference]: Start difference. First operand has 48 places, 18 transitions, 108 flow. Second operand 8 states and 71 transitions. [2025-03-17 06:46:49,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 222 flow [2025-03-17 06:46:49,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 193 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-03-17 06:46:49,739 INFO L231 Difference]: Finished difference. Result has 44 places, 19 transitions, 115 flow [2025-03-17 06:46:49,739 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} [2025-03-17 06:46:49,740 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2025-03-17 06:46:49,740 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 19 transitions, 115 flow [2025-03-17 06:46:49,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:46:49,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:49,740 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:49,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 06:46:49,940 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 [2025-03-17 06:46:49,941 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:49,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:49,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2109902080, now seen corresponding path program 6 times [2025-03-17 06:46:49,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:49,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005950954] [2025-03-17 06:46:49,942 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:46:49,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:49,946 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-03-17 06:46:49,949 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:49,949 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:46:49,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005950954] [2025-03-17 06:46:50,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005950954] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473225447] [2025-03-17 06:46:50,048 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:46:50,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:50,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:50,049 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) [2025-03-17 06:46:50,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 06:46:50,077 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-03-17 06:46:50,085 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:50,085 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:46:50,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:50,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:46:50,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:46:50,138 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:46:50,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473225447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:50,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:46:50,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2025-03-17 06:46:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59763786] [2025-03-17 06:46:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:50,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:46:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:50,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:46:50,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:46:50,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:50,139 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) [2025-03-17 06:46:50,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:50,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:50,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:50,181 INFO L124 PetriNetUnfolderBase]: 19/53 cut-off events. [2025-03-17 06:46:50,181 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2025-03-17 06:46:50,181 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. 1/54 useless extension candidates. Maximal degree in co-relation 172. Up to 18 conditions per place. [2025-03-17 06:46:50,182 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 19 selfloop transitions, 3 changer transitions 4/29 dead transitions. [2025-03-17 06:46:50,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 29 transitions, 197 flow [2025-03-17 06:46:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2025-03-17 06:46:50,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2025-03-17 06:46:50,183 INFO L175 Difference]: Start difference. First operand has 44 places, 19 transitions, 115 flow. Second operand 6 states and 55 transitions. [2025-03-17 06:46:50,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 29 transitions, 197 flow [2025-03-17 06:46:50,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 29 transitions, 168 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-03-17 06:46:50,184 INFO L231 Difference]: Finished difference. Result has 43 places, 19 transitions, 97 flow [2025-03-17 06:46:50,184 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} [2025-03-17 06:46:50,185 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 23 predicate places. [2025-03-17 06:46:50,185 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 19 transitions, 97 flow [2025-03-17 06:46:50,185 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) [2025-03-17 06:46:50,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:50,185 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:50,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 06:46:50,385 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 [2025-03-17 06:46:50,386 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:50,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2033041300, now seen corresponding path program 7 times [2025-03-17 06:46:50,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:50,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964885820] [2025-03-17 06:46:50,386 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:46:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:50,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:50,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:50,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:50,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964885820] [2025-03-17 06:46:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964885820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918770718] [2025-03-17 06:46:50,470 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:46:50,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:50,472 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) [2025-03-17 06:46:50,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 06:46:50,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:50,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:50,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:50,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:50,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:46:50,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:46:50,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:46:50,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918770718] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:50,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:46:50,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2025-03-17 06:46:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301935326] [2025-03-17 06:46:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:50,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:46:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:50,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:46:50,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:46:50,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-17 06:46:50,546 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) [2025-03-17 06:46:50,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:50,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-17 06:46:50,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:50,584 INFO L124 PetriNetUnfolderBase]: 18/46 cut-off events. [2025-03-17 06:46:50,584 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2025-03-17 06:46:50,585 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 65 event pairs, 0 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 179. Up to 18 conditions per place. [2025-03-17 06:46:50,585 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2025-03-17 06:46:50,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 25 transitions, 164 flow [2025-03-17 06:46:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 52 transitions. [2025-03-17 06:46:50,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-03-17 06:46:50,586 INFO L175 Difference]: Start difference. First operand has 43 places, 19 transitions, 97 flow. Second operand 6 states and 52 transitions. [2025-03-17 06:46:50,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 25 transitions, 164 flow [2025-03-17 06:46:50,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 25 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 06:46:50,586 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2025-03-17 06:46:50,586 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} [2025-03-17 06:46:50,587 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 22 predicate places. [2025-03-17 06:46:50,587 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2025-03-17 06:46:50,587 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) [2025-03-17 06:46:50,591 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-17 06:46:50,592 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-17 06:46:50,592 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-17 06:46:50,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 06:46:50,792 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 [2025-03-17 06:46:50,793 INFO L422 BasicCegarLoop]: Path program histogram: [7, 2, 2, 1] [2025-03-17 06:46:50,795 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 06:46:50,795 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 06:46:50,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:46:50 BasicIcfg [2025-03-17 06:46:50,804 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 06:46:50,804 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 06:46:50,804 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 06:46:50,804 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 06:46:50,805 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:46:45" (3/4) ... [2025-03-17 06:46:50,806 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 06:46:50,808 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 06:46:50,808 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 06:46:50,819 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-03-17 06:46:50,819 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-03-17 06:46:50,819 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-17 06:46:50,820 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 06:46:50,903 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 06:46:50,903 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 06:46:50,903 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 06:46:50,904 INFO L158 Benchmark]: Toolchain (without parser) took 6016.54ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 103.9MB in the end (delta: 1.6MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2025-03-17 06:46:50,904 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:46:50,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.42ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 94.1MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:46:50,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.78ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 93.4MB in the end (delta: 712.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:46:50,904 INFO L158 Benchmark]: Boogie Preprocessor took 31.97ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:46:50,905 INFO L158 Benchmark]: IcfgBuilder took 314.08ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 72.5MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 06:46:50,905 INFO L158 Benchmark]: TraceAbstraction took 5359.31ms. Allocated memory is still 142.6MB. Free memory was 71.8MB in the beginning and 109.3MB in the end (delta: -37.5MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2025-03-17 06:46:50,905 INFO L158 Benchmark]: Witness Printer took 99.04ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 103.9MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:46:50,906 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 127.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.42ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 94.1MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.78ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 93.4MB in the end (delta: 712.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.97ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 314.08ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 72.5MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5359.31ms. Allocated memory is still 142.6MB. Free memory was 71.8MB in the beginning and 109.3MB in the end (delta: -37.5MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. * Witness Printer took 99.04ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 103.9MB in the end (delta: 5.5MB). 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, 28 edges, 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: 5.3s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 173 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 640 IncrementalHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 0 mSDtfsCounter, 640 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s 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, 1.7s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 810 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 24 InterpolantComputations, 11 PerfectInterpolantSequences, 33/57 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! [2025-03-17 06:46:50,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE