./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:15:15,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:15:15,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:15:15,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:15:15,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:15:15,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:15:15,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:15:15,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:15:15,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:15:15,594 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:15:15,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:15:15,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:15:15,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:15:15,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:15:15,595 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:15:15,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:15:15,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:15:15,595 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:15:15,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:15:15,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:15:15,596 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:15:15,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:15:15,596 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:15:15,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:15:15,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:15:15,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:15:15,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:15:15,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:15:15,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:15:15,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:15:15,597 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2025-02-06 04:15:15,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:15:15,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:15:15,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:15:15,814 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:15:15,814 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:15:15,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2025-02-06 04:15:17,022 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/016a752ef/82351ebcc0404c9fa6e6e226d8cb1708/FLAGddc08f6ab [2025-02-06 04:15:17,332 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:15:17,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2025-02-06 04:15:17,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/016a752ef/82351ebcc0404c9fa6e6e226d8cb1708/FLAGddc08f6ab [2025-02-06 04:15:17,589 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/016a752ef/82351ebcc0404c9fa6e6e226d8cb1708 [2025-02-06 04:15:17,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:15:17,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:15:17,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:15:17,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:15:17,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:15:17,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc23c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17, skipping insertion in model container [2025-02-06 04:15:17,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:15:17,885 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2025-02-06 04:15:17,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:15:17,896 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:15:17,928 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2025-02-06 04:15:17,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:15:17,954 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:15:17,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17 WrapperNode [2025-02-06 04:15:17,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:15:17,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:15:17,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:15:17,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:15:17,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,980 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-02-06 04:15:17,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:15:17,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:15:17,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:15:17,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:15:17,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,993 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]. [2025-02-06 04:15:17,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,996 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:17,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:15:18,000 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:15:18,000 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:15:18,000 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:15:18,001 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (1/1) ... [2025-02-06 04:15:18,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:15:18,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:18,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:15:18,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:15:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-06 04:15:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-06 04:15:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-06 04:15:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-06 04:15:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:15:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:15:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:15:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:15:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:15:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:15:18,044 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:15:18,126 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:15:18,128 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:15:18,231 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:15:18,232 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:15:18,295 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:15:18,295 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:15:18,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:18 BoogieIcfgContainer [2025-02-06 04:15:18,296 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:15:18,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:15:18,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:15:18,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:15:18,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:15:17" (1/3) ... [2025-02-06 04:15:18,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2288d3b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:15:18, skipping insertion in model container [2025-02-06 04:15:18,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:17" (2/3) ... [2025-02-06 04:15:18,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2288d3b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:15:18, skipping insertion in model container [2025-02-06 04:15:18,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:18" (3/3) ... [2025-02-06 04:15:18,304 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2025-02-06 04:15:18,317 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:15:18,318 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-1.i that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-06 04:15:18,319 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:15:18,352 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:15:18,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2025-02-06 04:15:18,393 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-02-06 04:15:18,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:15:18,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-02-06 04:15:18,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2025-02-06 04:15:18,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2025-02-06 04:15:18,406 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:15:18,414 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;@bf469be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:15:18,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:15:18,420 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:15:18,420 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-02-06 04:15:18,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:15:18,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:18,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:18,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:18,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:18,425 INFO L85 PathProgramCache]: Analyzing trace with hash 341173782, now seen corresponding path program 1 times [2025-02-06 04:15:18,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:18,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601857209] [2025-02-06 04:15:18,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:18,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:18,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:15:18,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:15:18,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:18,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601857209] [2025-02-06 04:15:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601857209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:15:18,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869679802] [2025-02-06 04:15:18,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:18,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:15:18,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:18,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:15:18,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:15:18,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:18,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:18,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:18,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:18,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:19,046 INFO L124 PetriNetUnfolderBase]: 321/540 cut-off events. [2025-02-06 04:15:19,046 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:15:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 540 events. 321/540 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2134 event pairs, 62 based on Foata normal form. 12/535 useless extension candidates. Maximal degree in co-relation 1042. Up to 221 conditions per place. [2025-02-06 04:15:19,054 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2025-02-06 04:15:19,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2025-02-06 04:15:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:15:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:15:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-02-06 04:15:19,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-06 04:15:19,067 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2025-02-06 04:15:19,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2025-02-06 04:15:19,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:15:19,076 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2025-02-06 04:15:19,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2025-02-06 04:15:19,081 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2025-02-06 04:15:19,082 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2025-02-06 04:15:19,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:19,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:19,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:19,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:15:19,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:19,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash -26154636, now seen corresponding path program 1 times [2025-02-06 04:15:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:19,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319562076] [2025-02-06 04:15:19,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:19,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:19,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:15:19,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:15:19,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:19,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:19,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:19,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319562076] [2025-02-06 04:15:19,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319562076] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:19,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:19,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:15:19,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750592614] [2025-02-06 04:15:19,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:19,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:15:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:19,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:15:19,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:15:19,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:19,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:19,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:19,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:19,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:19,433 INFO L124 PetriNetUnfolderBase]: 382/687 cut-off events. [2025-02-06 04:15:19,433 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-02-06 04:15:19,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 687 events. 382/687 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2911 event pairs, 65 based on Foata normal form. 27/710 useless extension candidates. Maximal degree in co-relation 1570. Up to 246 conditions per place. [2025-02-06 04:15:19,460 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2025-02-06 04:15:19,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2025-02-06 04:15:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:15:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:15:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2025-02-06 04:15:19,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-06 04:15:19,463 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2025-02-06 04:15:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2025-02-06 04:15:19,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-06 04:15:19,468 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2025-02-06 04:15:19,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2025-02-06 04:15:19,470 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2025-02-06 04:15:19,470 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2025-02-06 04:15:19,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:19,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:19,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:19,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:15:19,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:19,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1984146740, now seen corresponding path program 2 times [2025-02-06 04:15:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:19,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404999768] [2025-02-06 04:15:19,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:19,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:19,481 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:15:19,485 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:15:19,486 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:15:19,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:19,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:19,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404999768] [2025-02-06 04:15:19,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404999768] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:19,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:19,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:15:19,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852560635] [2025-02-06 04:15:19,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:19,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:15:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:19,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:15:19,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:15:19,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:19,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:19,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:19,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:19,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:19,726 INFO L124 PetriNetUnfolderBase]: 328/603 cut-off events. [2025-02-06 04:15:19,726 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-02-06 04:15:19,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 603 events. 328/603 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2513 event pairs, 65 based on Foata normal form. 45/644 useless extension candidates. Maximal degree in co-relation 1711. Up to 234 conditions per place. [2025-02-06 04:15:19,729 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2025-02-06 04:15:19,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2025-02-06 04:15:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:15:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:15:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2025-02-06 04:15:19,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2025-02-06 04:15:19,731 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2025-02-06 04:15:19,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2025-02-06 04:15:19,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 04:15:19,735 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2025-02-06 04:15:19,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2025-02-06 04:15:19,735 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-02-06 04:15:19,735 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2025-02-06 04:15:19,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:19,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:19,736 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:19,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:15:19,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:19,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:19,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1835947175, now seen corresponding path program 1 times [2025-02-06 04:15:19,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:19,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715041538] [2025-02-06 04:15:19,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:19,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:19,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 04:15:19,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 04:15:19,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:19,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:19,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715041538] [2025-02-06 04:15:19,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715041538] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:19,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:19,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:15:19,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417740029] [2025-02-06 04:15:19,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:19,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:15:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:19,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:15:19,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:15:19,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:19,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:19,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:19,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:19,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:20,098 INFO L124 PetriNetUnfolderBase]: 337/612 cut-off events. [2025-02-06 04:15:20,098 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2025-02-06 04:15:20,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 612 events. 337/612 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2551 event pairs, 74 based on Foata normal form. 18/626 useless extension candidates. Maximal degree in co-relation 1911. Up to 237 conditions per place. [2025-02-06 04:15:20,106 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2025-02-06 04:15:20,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2025-02-06 04:15:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:15:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:15:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-02-06 04:15:20,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-02-06 04:15:20,107 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2025-02-06 04:15:20,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2025-02-06 04:15:20,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-02-06 04:15:20,113 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2025-02-06 04:15:20,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2025-02-06 04:15:20,114 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2025-02-06 04:15:20,114 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2025-02-06 04:15:20,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:20,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:20,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:20,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:15:20,115 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:20,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 765975211, now seen corresponding path program 2 times [2025-02-06 04:15:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:20,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291001680] [2025-02-06 04:15:20,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:20,123 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-02-06 04:15:20,128 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 04:15:20,129 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:15:20,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:20,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:20,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291001680] [2025-02-06 04:15:20,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291001680] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:20,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:20,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:15:20,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960509245] [2025-02-06 04:15:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:20,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:15:20,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:20,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:15:20,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:15:20,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:20,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:20,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:20,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:20,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:20,447 INFO L124 PetriNetUnfolderBase]: 445/801 cut-off events. [2025-02-06 04:15:20,447 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2025-02-06 04:15:20,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 801 events. 445/801 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3459 event pairs, 59 based on Foata normal form. 27/823 useless extension candidates. Maximal degree in co-relation 2600. Up to 151 conditions per place. [2025-02-06 04:15:20,452 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 23 changer transitions 30/100 dead transitions. [2025-02-06 04:15:20,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 739 flow [2025-02-06 04:15:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:15:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:15:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2025-02-06 04:15:20,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-02-06 04:15:20,454 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 138 transitions. [2025-02-06 04:15:20,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 739 flow [2025-02-06 04:15:20,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 685 flow, removed 21 selfloop flow, removed 4 redundant places. [2025-02-06 04:15:20,461 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 390 flow [2025-02-06 04:15:20,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=390, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2025-02-06 04:15:20,462 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2025-02-06 04:15:20,462 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 390 flow [2025-02-06 04:15:20,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:20,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:20,462 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:20,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:15:20,463 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:20,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1363386587, now seen corresponding path program 1 times [2025-02-06 04:15:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192013450] [2025-02-06 04:15:20,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:20,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:15:20,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:20,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:20,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:20,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192013450] [2025-02-06 04:15:20,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192013450] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911476104] [2025-02-06 04:15:20,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:20,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:20,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:15:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:15:20,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:15:20,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:20,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:20,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:20,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:15:20,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:20,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911476104] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:20,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:20,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-06 04:15:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524305378] [2025-02-06 04:15:20,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:20,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:15:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:20,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:15:20,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:15:20,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:20,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:20,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:20,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:20,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:21,244 INFO L124 PetriNetUnfolderBase]: 571/1050 cut-off events. [2025-02-06 04:15:21,245 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2025-02-06 04:15:21,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 1050 events. 571/1050 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4364 event pairs, 137 based on Foata normal form. 63/1109 useless extension candidates. Maximal degree in co-relation 4107. Up to 486 conditions per place. [2025-02-06 04:15:21,251 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 64 selfloop transitions, 17 changer transitions 67/151 dead transitions. [2025-02-06 04:15:21,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 151 transitions, 1346 flow [2025-02-06 04:15:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 04:15:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-06 04:15:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2025-02-06 04:15:21,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2025-02-06 04:15:21,252 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 390 flow. Second operand 19 states and 231 transitions. [2025-02-06 04:15:21,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 151 transitions, 1346 flow [2025-02-06 04:15:21,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 151 transitions, 1267 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-02-06 04:15:21,262 INFO L231 Difference]: Finished difference. Result has 88 places, 51 transitions, 521 flow [2025-02-06 04:15:21,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=521, PETRI_PLACES=88, PETRI_TRANSITIONS=51} [2025-02-06 04:15:21,263 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2025-02-06 04:15:21,263 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 51 transitions, 521 flow [2025-02-06 04:15:21,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:21,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:21,263 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:21,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:15:21,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:21,464 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:21,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1919587149, now seen corresponding path program 2 times [2025-02-06 04:15:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:21,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64885016] [2025-02-06 04:15:21,465 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:21,472 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:15:21,478 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:21,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:15:21,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:21,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:21,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64885016] [2025-02-06 04:15:21,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64885016] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:21,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:21,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:15:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490146051] [2025-02-06 04:15:21,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:21,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:15:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:21,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:15:21,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:15:21,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:21,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 51 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-02-06 04:15:21,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:21,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:21,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:21,842 INFO L124 PetriNetUnfolderBase]: 652/1217 cut-off events. [2025-02-06 04:15:21,842 INFO L125 PetriNetUnfolderBase]: For 19130/19130 co-relation queries the response was YES. [2025-02-06 04:15:21,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 1217 events. 652/1217 cut-off events. For 19130/19130 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5640 event pairs, 132 based on Foata normal form. 27/1240 useless extension candidates. Maximal degree in co-relation 6019. Up to 483 conditions per place. [2025-02-06 04:15:21,850 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 76 selfloop transitions, 23 changer transitions 31/133 dead transitions. [2025-02-06 04:15:21,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 1509 flow [2025-02-06 04:15:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:15:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:15:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 187 transitions. [2025-02-06 04:15:21,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2025-02-06 04:15:21,852 INFO L175 Difference]: Start difference. First operand has 88 places, 51 transitions, 521 flow. Second operand 15 states and 187 transitions. [2025-02-06 04:15:21,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 1509 flow [2025-02-06 04:15:21,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 1211 flow, removed 138 selfloop flow, removed 12 redundant places. [2025-02-06 04:15:21,869 INFO L231 Difference]: Finished difference. Result has 90 places, 57 transitions, 583 flow [2025-02-06 04:15:21,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=583, PETRI_PLACES=90, PETRI_TRANSITIONS=57} [2025-02-06 04:15:21,870 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2025-02-06 04:15:21,870 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 57 transitions, 583 flow [2025-02-06 04:15:21,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-02-06 04:15:21,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:21,870 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:21,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:15:21,870 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:21,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash -744688909, now seen corresponding path program 3 times [2025-02-06 04:15:21,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:21,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545142730] [2025-02-06 04:15:21,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:21,879 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:15:21,883 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:21,883 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:15:21,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545142730] [2025-02-06 04:15:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545142730] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813294043] [2025-02-06 04:15:21,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:21,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:21,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:15:21,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:15:21,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:15:21,998 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:21,998 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:15:21,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:21,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:15:21,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:22,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813294043] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:22,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:22,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-06 04:15:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811361823] [2025-02-06 04:15:22,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:22,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:15:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:22,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:15:22,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:15:22,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:22,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 57 transitions, 583 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:22,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:22,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:22,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:22,637 INFO L124 PetriNetUnfolderBase]: 814/1489 cut-off events. [2025-02-06 04:15:22,637 INFO L125 PetriNetUnfolderBase]: For 23715/23715 co-relation queries the response was YES. [2025-02-06 04:15:22,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7554 conditions, 1489 events. 814/1489 cut-off events. For 23715/23715 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6954 event pairs, 72 based on Foata normal form. 81/1566 useless extension candidates. Maximal degree in co-relation 7511. Up to 237 conditions per place. [2025-02-06 04:15:22,646 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 78 selfloop transitions, 45 changer transitions 81/207 dead transitions. [2025-02-06 04:15:22,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 207 transitions, 2402 flow [2025-02-06 04:15:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 04:15:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 04:15:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 308 transitions. [2025-02-06 04:15:22,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2025-02-06 04:15:22,648 INFO L175 Difference]: Start difference. First operand has 90 places, 57 transitions, 583 flow. Second operand 25 states and 308 transitions. [2025-02-06 04:15:22,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 207 transitions, 2402 flow [2025-02-06 04:15:22,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 207 transitions, 2182 flow, removed 94 selfloop flow, removed 10 redundant places. [2025-02-06 04:15:22,677 INFO L231 Difference]: Finished difference. Result has 117 places, 69 transitions, 910 flow [2025-02-06 04:15:22,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=910, PETRI_PLACES=117, PETRI_TRANSITIONS=69} [2025-02-06 04:15:22,677 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 91 predicate places. [2025-02-06 04:15:22,677 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 69 transitions, 910 flow [2025-02-06 04:15:22,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:22,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:22,678 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:22,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:15:22,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:22,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:22,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash 183631300, now seen corresponding path program 1 times [2025-02-06 04:15:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65461538] [2025-02-06 04:15:22,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:22,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:15:22,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:15:22,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:22,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65461538] [2025-02-06 04:15:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65461538] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110077832] [2025-02-06 04:15:22,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:22,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:22,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:23,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:15:23,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:15:23,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:15:23,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:15:23,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:23,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:23,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:15:23,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:23,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:23,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110077832] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:23,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:23,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-02-06 04:15:23,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525363096] [2025-02-06 04:15:23,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:23,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 04:15:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:23,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 04:15:23,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-02-06 04:15:23,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:23,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 69 transitions, 910 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 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) [2025-02-06 04:15:23,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:23,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:23,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:23,887 INFO L124 PetriNetUnfolderBase]: 1129/2119 cut-off events. [2025-02-06 04:15:23,888 INFO L125 PetriNetUnfolderBase]: For 69281/69281 co-relation queries the response was YES. [2025-02-06 04:15:23,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13163 conditions, 2119 events. 1129/2119 cut-off events. For 69281/69281 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11353 event pairs, 70 based on Foata normal form. 72/2187 useless extension candidates. Maximal degree in co-relation 13107. Up to 400 conditions per place. [2025-02-06 04:15:23,944 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 90 selfloop transitions, 66 changer transitions 88/247 dead transitions. [2025-02-06 04:15:23,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 247 transitions, 3782 flow [2025-02-06 04:15:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 04:15:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-06 04:15:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 341 transitions. [2025-02-06 04:15:23,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5074404761904762 [2025-02-06 04:15:23,946 INFO L175 Difference]: Start difference. First operand has 117 places, 69 transitions, 910 flow. Second operand 28 states and 341 transitions. [2025-02-06 04:15:23,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 247 transitions, 3782 flow [2025-02-06 04:15:24,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 247 transitions, 3161 flow, removed 288 selfloop flow, removed 17 redundant places. [2025-02-06 04:15:24,009 INFO L231 Difference]: Finished difference. Result has 138 places, 97 transitions, 1499 flow [2025-02-06 04:15:24,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1499, PETRI_PLACES=138, PETRI_TRANSITIONS=97} [2025-02-06 04:15:24,011 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 112 predicate places. [2025-02-06 04:15:24,011 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 97 transitions, 1499 flow [2025-02-06 04:15:24,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 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) [2025-02-06 04:15:24,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:24,011 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:24,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:15:24,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:24,214 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:24,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1643456023, now seen corresponding path program 2 times [2025-02-06 04:15:24,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:24,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328952680] [2025-02-06 04:15:24,215 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:24,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:15:24,224 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:15:24,224 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:15:24,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:24,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328952680] [2025-02-06 04:15:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328952680] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:24,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930153036] [2025-02-06 04:15:24,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:24,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:24,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:24,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:15:24,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:15:24,373 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 04:15:24,386 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:15:24,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:15:24,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:24,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:15:24,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:24,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:24,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930153036] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:24,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:24,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2025-02-06 04:15:24,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412679486] [2025-02-06 04:15:24,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:24,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 04:15:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:24,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 04:15:24,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:15:24,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:24,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 97 transitions, 1499 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2025-02-06 04:15:24,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:24,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:24,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:25,302 INFO L124 PetriNetUnfolderBase]: 1462/2747 cut-off events. [2025-02-06 04:15:25,303 INFO L125 PetriNetUnfolderBase]: For 144195/144195 co-relation queries the response was YES. [2025-02-06 04:15:25,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19614 conditions, 2747 events. 1462/2747 cut-off events. For 144195/144195 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14498 event pairs, 38 based on Foata normal form. 63/2806 useless extension candidates. Maximal degree in co-relation 19548. Up to 543 conditions per place. [2025-02-06 04:15:25,328 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 104 selfloop transitions, 100 changer transitions 92/299 dead transitions. [2025-02-06 04:15:25,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 299 transitions, 5332 flow [2025-02-06 04:15:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 04:15:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-06 04:15:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 393 transitions. [2025-02-06 04:15:25,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2025-02-06 04:15:25,331 INFO L175 Difference]: Start difference. First operand has 138 places, 97 transitions, 1499 flow. Second operand 32 states and 393 transitions. [2025-02-06 04:15:25,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 299 transitions, 5332 flow [2025-02-06 04:15:25,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 299 transitions, 4109 flow, removed 587 selfloop flow, removed 15 redundant places. [2025-02-06 04:15:25,450 INFO L231 Difference]: Finished difference. Result has 164 places, 125 transitions, 2048 flow [2025-02-06 04:15:25,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2048, PETRI_PLACES=164, PETRI_TRANSITIONS=125} [2025-02-06 04:15:25,451 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 138 predicate places. [2025-02-06 04:15:25,452 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 125 transitions, 2048 flow [2025-02-06 04:15:25,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2025-02-06 04:15:25,452 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:25,452 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:25,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 04:15:25,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 04:15:25,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:25,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 573500545, now seen corresponding path program 3 times [2025-02-06 04:15:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373720393] [2025-02-06 04:15:25,653 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:25,657 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 5 equivalence classes. [2025-02-06 04:15:25,668 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:25,669 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 04:15:25,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:25,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373720393] [2025-02-06 04:15:25,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373720393] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588779248] [2025-02-06 04:15:25,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:25,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:25,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:25,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:15:25,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:15:25,874 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 5 equivalence classes. [2025-02-06 04:15:25,886 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:25,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 04:15:25,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:25,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 04:15:25,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:25,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588779248] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:26,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:26,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2025-02-06 04:15:26,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639714223] [2025-02-06 04:15:26,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:26,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-06 04:15:26,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:26,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-06 04:15:26,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=650, Unknown=0, NotChecked=0, Total=812 [2025-02-06 04:15:26,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:26,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 125 transitions, 2048 flow. Second operand has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 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) [2025-02-06 04:15:26,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:26,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:26,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:27,190 INFO L124 PetriNetUnfolderBase]: 1732/3233 cut-off events. [2025-02-06 04:15:27,190 INFO L125 PetriNetUnfolderBase]: For 176931/176931 co-relation queries the response was YES. [2025-02-06 04:15:27,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23002 conditions, 3233 events. 1732/3233 cut-off events. For 176931/176931 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17156 event pairs, 92 based on Foata normal form. 36/3265 useless extension candidates. Maximal degree in co-relation 22925. Up to 633 conditions per place. [2025-02-06 04:15:27,216 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 121 selfloop transitions, 120 changer transitions 77/321 dead transitions. [2025-02-06 04:15:27,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 321 transitions, 5717 flow [2025-02-06 04:15:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 04:15:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-06 04:15:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 391 transitions. [2025-02-06 04:15:27,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5091145833333334 [2025-02-06 04:15:27,217 INFO L175 Difference]: Start difference. First operand has 164 places, 125 transitions, 2048 flow. Second operand 32 states and 391 transitions. [2025-02-06 04:15:27,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 321 transitions, 5717 flow [2025-02-06 04:15:27,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 321 transitions, 4619 flow, removed 514 selfloop flow, removed 20 redundant places. [2025-02-06 04:15:27,397 INFO L231 Difference]: Finished difference. Result has 180 places, 149 transitions, 2386 flow [2025-02-06 04:15:27,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2386, PETRI_PLACES=180, PETRI_TRANSITIONS=149} [2025-02-06 04:15:27,398 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2025-02-06 04:15:27,398 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 149 transitions, 2386 flow [2025-02-06 04:15:27,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 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) [2025-02-06 04:15:27,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:27,399 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:27,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 04:15:27,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 04:15:27,600 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:27,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash 784342226, now seen corresponding path program 4 times [2025-02-06 04:15:27,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:27,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410601879] [2025-02-06 04:15:27,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:15:27,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:27,606 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-06 04:15:27,612 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 39 of 42 statements. [2025-02-06 04:15:27,614 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:15:27,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:15:27,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:27,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410601879] [2025-02-06 04:15:27,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410601879] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:27,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:27,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:15:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433882081] [2025-02-06 04:15:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:27,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:15:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:27,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:15:27,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:15:27,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-02-06 04:15:27,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 149 transitions, 2386 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:27,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:27,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-02-06 04:15:27,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:28,584 INFO L124 PetriNetUnfolderBase]: 4785/8179 cut-off events. [2025-02-06 04:15:28,584 INFO L125 PetriNetUnfolderBase]: For 312938/312938 co-relation queries the response was YES. [2025-02-06 04:15:28,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46849 conditions, 8179 events. 4785/8179 cut-off events. For 312938/312938 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 51975 event pairs, 141 based on Foata normal form. 0/7473 useless extension candidates. Maximal degree in co-relation 46777. Up to 2166 conditions per place. [2025-02-06 04:15:28,619 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 554/554 dead transitions. [2025-02-06 04:15:28,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 554 transitions, 9240 flow [2025-02-06 04:15:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:15:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:15:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2025-02-06 04:15:28,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.671875 [2025-02-06 04:15:28,620 INFO L175 Difference]: Start difference. First operand has 180 places, 149 transitions, 2386 flow. Second operand 8 states and 129 transitions. [2025-02-06 04:15:28,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 554 transitions, 9240 flow [2025-02-06 04:15:28,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 554 transitions, 8192 flow, removed 357 selfloop flow, removed 20 redundant places. [2025-02-06 04:15:28,903 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2025-02-06 04:15:28,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2025-02-06 04:15:28,903 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2025-02-06 04:15:28,903 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2025-02-06 04:15:28,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:28,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-02-06 04:15:28,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-02-06 04:15:28,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-02-06 04:15:28,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:15:28,906 INFO L422 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1] [2025-02-06 04:15:28,908 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 04:15:28,908 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 04:15:28,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 04:15:28 BasicIcfg [2025-02-06 04:15:28,914 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 04:15:28,914 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 04:15:28,914 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 04:15:28,914 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 04:15:28,915 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:18" (3/4) ... [2025-02-06 04:15:28,917 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 04:15:28,920 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-02-06 04:15:28,920 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-02-06 04:15:28,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2025-02-06 04:15:28,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-06 04:15:28,923 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-06 04:15:28,923 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 04:15:28,923 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 04:15:28,973 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 04:15:28,973 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 04:15:28,973 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 04:15:28,975 INFO L158 Benchmark]: Toolchain (without parser) took 11381.97ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 103.3MB in the beginning and 142.7MB in the end (delta: -39.4MB). Peak memory consumption was 195.2MB. Max. memory is 16.1GB. [2025-02-06 04:15:28,975 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:15:28,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.22ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 84.4MB in the end (delta: 18.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 04:15:28,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.56ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 83.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:15:28,977 INFO L158 Benchmark]: Boogie Preprocessor took 18.72ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 80.9MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:15:28,977 INFO L158 Benchmark]: IcfgBuilder took 295.63ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 63.0MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 04:15:28,978 INFO L158 Benchmark]: TraceAbstraction took 10615.91ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 63.0MB in the beginning and 151.1MB in the end (delta: -88.1MB). Peak memory consumption was 279.1MB. Max. memory is 16.1GB. [2025-02-06 04:15:28,978 INFO L158 Benchmark]: Witness Printer took 59.25ms. Allocated memory is still 377.5MB. Free memory was 151.1MB in the beginning and 142.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:15:28,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.22ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 84.4MB in the end (delta: 18.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.56ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 83.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.72ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 80.9MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 295.63ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 63.0MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10615.91ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 63.0MB in the beginning and 151.1MB in the end (delta: -88.1MB). Peak memory consumption was 279.1MB. Max. memory is 16.1GB. * Witness Printer took 59.25ms. Allocated memory is still 377.5MB. Free memory was 151.1MB in the beginning and 142.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.5s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2156 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2145 mSDsluCounter, 143 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3422 IncrementalHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 9 mSDtfsCounter, 3422 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 465 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2386occurred in iteration=11, InterpolantAutomatonStates: 204, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 369 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 470 ConstructedInterpolants, 0 QuantifiedInterpolants, 1778 SizeOfPredicates, 31 NumberOfNonLiveVariables, 500 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 57/263 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! [2025-02-06 04:15:28,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE