./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --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/weaver/parallel-misc-3.wvr.c -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 b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:36:40,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:36:40,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:36:40,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:36:40,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:36:40,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:36:40,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:36:40,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:36:40,084 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:36:40,084 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:36:40,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:36:40,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:36:40,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:36:40,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:36:40,084 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:36:40,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:36:40,085 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:36:40,086 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:36:40,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:36:40,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:36:40,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:36:40,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:36:40,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:36:40,087 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 -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2025-02-06 04:36:40,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:36:40,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:36:40,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:36:40,304 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:36:40,304 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:36:40,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2025-02-06 04:36:41,518 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf1159b97/04ab30f741e6499bbc2ba317d8a9240f/FLAG03d90421b [2025-02-06 04:36:41,732 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:36:41,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2025-02-06 04:36:41,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf1159b97/04ab30f741e6499bbc2ba317d8a9240f/FLAG03d90421b [2025-02-06 04:36:41,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf1159b97/04ab30f741e6499bbc2ba317d8a9240f [2025-02-06 04:36:41,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:36:41,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:36:41,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:36:41,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:36:41,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:36:41,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad69ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41, skipping insertion in model container [2025-02-06 04:36:41,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:36:41,919 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/weaver/parallel-misc-3.wvr.c[2092,2105] [2025-02-06 04:36:41,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:36:41,928 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:36:41,942 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/weaver/parallel-misc-3.wvr.c[2092,2105] [2025-02-06 04:36:41,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:36:41,953 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:36:41,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41 WrapperNode [2025-02-06 04:36:41,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:36:41,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:36:41,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:36:41,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:36:41,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,973 INFO L138 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2025-02-06 04:36:41,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:36:41,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:36:41,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:36:41,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:36:41,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,991 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 04:36:41,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,994 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:41,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:36:41,997 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:36:41,997 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:36:41,997 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:36:41,998 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (1/1) ... [2025-02-06 04:36:42,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:36:42,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:42,025 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 04:36:42,036 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 04:36:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:36:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:36:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:36:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:36:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:36:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:36:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:36:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:36:42,053 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 04:36:42,108 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:36:42,109 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:36:42,235 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:36:42,235 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:36:42,310 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:36:42,310 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:36:42,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:36:42 BoogieIcfgContainer [2025-02-06 04:36:42,311 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:36:42,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:36:42,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:36:42,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:36:42,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:36:41" (1/3) ... [2025-02-06 04:36:42,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b172fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:36:42, skipping insertion in model container [2025-02-06 04:36:42,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:41" (2/3) ... [2025-02-06 04:36:42,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b172fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:36:42, skipping insertion in model container [2025-02-06 04:36:42,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:36:42" (3/3) ... [2025-02-06 04:36:42,317 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2025-02-06 04:36:42,326 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:36:42,328 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3.wvr.c that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-06 04:36:42,328 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:36:42,361 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:36:42,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2025-02-06 04:36:42,403 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-06 04:36:42,405 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:36:42,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-02-06 04:36:42,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2025-02-06 04:36:42,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 66 flow [2025-02-06 04:36:42,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:36:42,426 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;@5a9cee43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:36:42,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:36:42,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:36:42,437 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-02-06 04:36:42,437 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:36:42,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:42,438 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:42,438 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 04:36:42,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2063413131, now seen corresponding path program 1 times [2025-02-06 04:36:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989512507] [2025-02-06 04:36:42,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:42,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:36:42,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:36:42,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:42,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:42,602 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 04:36:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:42,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989512507] [2025-02-06 04:36:42,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989512507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:42,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:42,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:36:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355801891] [2025-02-06 04:36:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:42,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:36:42,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:42,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:36:42,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:36:42,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 04:36:42,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:36:42,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:42,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 04:36:42,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:42,762 INFO L124 PetriNetUnfolderBase]: 146/284 cut-off events. [2025-02-06 04:36:42,762 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-02-06 04:36:42,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 284 events. 146/284 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1133 event pairs, 12 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 458. Up to 185 conditions per place. [2025-02-06 04:36:42,766 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 21 selfloop transitions, 5 changer transitions 1/38 dead transitions. [2025-02-06 04:36:42,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 151 flow [2025-02-06 04:36:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:36:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:36:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-02-06 04:36:42,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2025-02-06 04:36:42,775 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 3 states and 67 transitions. [2025-02-06 04:36:42,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 151 flow [2025-02-06 04:36:42,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 137 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:36:42,780 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 91 flow [2025-02-06 04:36:42,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2025-02-06 04:36:42,783 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2025-02-06 04:36:42,784 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 91 flow [2025-02-06 04:36:42,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:36:42,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:42,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:42,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:36:42,784 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 04:36:42,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 407228783, now seen corresponding path program 1 times [2025-02-06 04:36:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700048451] [2025-02-06 04:36:42,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:42,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:36:42,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:36:42,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:42,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:42,869 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 04:36:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700048451] [2025-02-06 04:36:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700048451] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:42,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:42,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:36:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280329953] [2025-02-06 04:36:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:42,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:36:42,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:42,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:36:42,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:36:42,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 04:36:42,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 04:36:42,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:42,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 04:36:42,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:43,003 INFO L124 PetriNetUnfolderBase]: 152/299 cut-off events. [2025-02-06 04:36:43,004 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2025-02-06 04:36:43,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 299 events. 152/299 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1231 event pairs, 28 based on Foata normal form. 11/278 useless extension candidates. Maximal degree in co-relation 440. Up to 143 conditions per place. [2025-02-06 04:36:43,007 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 28 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2025-02-06 04:36:43,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 180 flow [2025-02-06 04:36:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:36:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:36:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-02-06 04:36:43,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2025-02-06 04:36:43,009 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 91 flow. Second operand 3 states and 66 transitions. [2025-02-06 04:36:43,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 180 flow [2025-02-06 04:36:43,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 173 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:43,011 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 96 flow [2025-02-06 04:36:43,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2025-02-06 04:36:43,011 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2025-02-06 04:36:43,011 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 96 flow [2025-02-06 04:36:43,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 04:36:43,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:43,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:43,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:36:43,012 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 04:36:43,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1441259863, now seen corresponding path program 1 times [2025-02-06 04:36:43,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148793887] [2025-02-06 04:36:43,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:43,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:36:43,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:36:43,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:43,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:43,117 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 04:36:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148793887] [2025-02-06 04:36:43,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148793887] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:43,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:43,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:36:43,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666776735] [2025-02-06 04:36:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:43,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:36:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:43,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:36:43,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:36:43,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 04:36:43,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 04:36:43,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:43,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 04:36:43,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:43,195 INFO L124 PetriNetUnfolderBase]: 157/328 cut-off events. [2025-02-06 04:36:43,195 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2025-02-06 04:36:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 328 events. 157/328 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1546 event pairs, 34 based on Foata normal form. 15/292 useless extension candidates. Maximal degree in co-relation 425. Up to 144 conditions per place. [2025-02-06 04:36:43,197 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 29 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2025-02-06 04:36:43,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 194 flow [2025-02-06 04:36:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:36:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:36:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2025-02-06 04:36:43,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2025-02-06 04:36:43,203 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 96 flow. Second operand 3 states and 65 transitions. [2025-02-06 04:36:43,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 194 flow [2025-02-06 04:36:43,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:43,205 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 106 flow [2025-02-06 04:36:43,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2025-02-06 04:36:43,207 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-02-06 04:36:43,207 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 106 flow [2025-02-06 04:36:43,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 04:36:43,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:43,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:43,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:36:43,207 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 04:36:43,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash 892490369, now seen corresponding path program 1 times [2025-02-06 04:36:43,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:43,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258760815] [2025-02-06 04:36:43,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:43,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:36:43,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:36:43,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:43,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:43,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:43,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258760815] [2025-02-06 04:36:43,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258760815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:43,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:43,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:36:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133336836] [2025-02-06 04:36:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:43,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:43,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:43,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:43,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-06 04:36:43,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 04:36:43,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:43,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-06 04:36:43,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:43,562 INFO L124 PetriNetUnfolderBase]: 326/601 cut-off events. [2025-02-06 04:36:43,563 INFO L125 PetriNetUnfolderBase]: For 214/238 co-relation queries the response was YES. [2025-02-06 04:36:43,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 601 events. 326/601 cut-off events. For 214/238 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2579 event pairs, 56 based on Foata normal form. 12/567 useless extension candidates. Maximal degree in co-relation 597. Up to 225 conditions per place. [2025-02-06 04:36:43,565 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 41 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2025-02-06 04:36:43,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 55 transitions, 272 flow [2025-02-06 04:36:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-06 04:36:43,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-02-06 04:36:43,570 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 106 flow. Second operand 4 states and 85 transitions. [2025-02-06 04:36:43,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 55 transitions, 272 flow [2025-02-06 04:36:43,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:43,572 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 136 flow [2025-02-06 04:36:43,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2025-02-06 04:36:43,573 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2025-02-06 04:36:43,573 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 136 flow [2025-02-06 04:36:43,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 04:36:43,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:43,573 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:43,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:36:43,573 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 04:36:43,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash 757206572, now seen corresponding path program 1 times [2025-02-06 04:36:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:43,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934587818] [2025-02-06 04:36:43,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:43,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:43,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:36:43,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:36:43,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:43,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:36:43,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:43,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934587818] [2025-02-06 04:36:43,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934587818] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:43,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:43,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:36:43,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302352652] [2025-02-06 04:36:43,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:43,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:43,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:43,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:43,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:43,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-06 04:36:43,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 04:36:43,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:43,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-06 04:36:43,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:43,814 INFO L124 PetriNetUnfolderBase]: 450/786 cut-off events. [2025-02-06 04:36:43,814 INFO L125 PetriNetUnfolderBase]: For 814/864 co-relation queries the response was YES. [2025-02-06 04:36:43,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 786 events. 450/786 cut-off events. For 814/864 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3963 event pairs, 122 based on Foata normal form. 44/768 useless extension candidates. Maximal degree in co-relation 1193. Up to 286 conditions per place. [2025-02-06 04:36:43,819 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 44 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2025-02-06 04:36:43,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 348 flow [2025-02-06 04:36:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-06 04:36:43,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-02-06 04:36:43,820 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 136 flow. Second operand 4 states and 83 transitions. [2025-02-06 04:36:43,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 348 flow [2025-02-06 04:36:43,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 342 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 04:36:43,822 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 166 flow [2025-02-06 04:36:43,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2025-02-06 04:36:43,823 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2025-02-06 04:36:43,823 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 166 flow [2025-02-06 04:36:43,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 04:36:43,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:43,823 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:43,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:36:43,828 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 04:36:43,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1201485798, now seen corresponding path program 1 times [2025-02-06 04:36:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:43,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176530038] [2025-02-06 04:36:43,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:43,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:43,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:36:43,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:36:43,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:43,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:43,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176530038] [2025-02-06 04:36:43,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176530038] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681477326] [2025-02-06 04:36:43,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:43,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:43,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:43,943 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 04:36:43,947 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 04:36:43,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:36:43,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:36:43,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:43,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:43,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 04:36:44,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:44,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:36:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:44,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681477326] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:36:44,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:36:44,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-02-06 04:36:44,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387567203] [2025-02-06 04:36:44,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:36:44,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:36:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:44,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:36:44,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:36:44,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 04:36:44,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 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 04:36:44,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:44,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 04:36:44,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:44,405 INFO L124 PetriNetUnfolderBase]: 956/1991 cut-off events. [2025-02-06 04:36:44,405 INFO L125 PetriNetUnfolderBase]: For 2350/2455 co-relation queries the response was YES. [2025-02-06 04:36:44,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 1991 events. 956/1991 cut-off events. For 2350/2455 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11872 event pairs, 145 based on Foata normal form. 40/1994 useless extension candidates. Maximal degree in co-relation 1528. Up to 658 conditions per place. [2025-02-06 04:36:44,420 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 65 selfloop transitions, 15 changer transitions 1/94 dead transitions. [2025-02-06 04:36:44,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 94 transitions, 607 flow [2025-02-06 04:36:44,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:36:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:36:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-02-06 04:36:44,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.82 [2025-02-06 04:36:44,421 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 166 flow. Second operand 5 states and 123 transitions. [2025-02-06 04:36:44,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 94 transitions, 607 flow [2025-02-06 04:36:44,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 94 transitions, 599 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-02-06 04:36:44,426 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 261 flow [2025-02-06 04:36:44,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2025-02-06 04:36:44,427 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2025-02-06 04:36:44,427 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 261 flow [2025-02-06 04:36:44,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 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 04:36:44,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:44,427 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:44,437 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 04:36:44,628 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 04:36:44,628 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 04:36:44,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:44,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1924232100, now seen corresponding path program 2 times [2025-02-06 04:36:44,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:44,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623578452] [2025-02-06 04:36:44,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:36:44,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:44,637 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 04:36:44,647 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:36:44,647 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:36:44,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:44,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623578452] [2025-02-06 04:36:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623578452] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137851393] [2025-02-06 04:36:44,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:36:44,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:44,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:44,791 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 04:36:44,793 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 04:36:44,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 04:36:44,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:36:44,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:36:44,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:44,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 04:36:44,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:44,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:36:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:44,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137851393] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:36:44,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:36:44,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 04:36:44,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400320431] [2025-02-06 04:36:44,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:36:44,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:36:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:44,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:36:44,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:36:44,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 04:36:44,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 04:36:44,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:44,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 04:36:44,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:45,408 INFO L124 PetriNetUnfolderBase]: 1767/3697 cut-off events. [2025-02-06 04:36:45,408 INFO L125 PetriNetUnfolderBase]: For 5955/6184 co-relation queries the response was YES. [2025-02-06 04:36:45,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11653 conditions, 3697 events. 1767/3697 cut-off events. For 5955/6184 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 26159 event pairs, 171 based on Foata normal form. 96/3730 useless extension candidates. Maximal degree in co-relation 3829. Up to 1033 conditions per place. [2025-02-06 04:36:45,427 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 81 selfloop transitions, 31 changer transitions 1/126 dead transitions. [2025-02-06 04:36:45,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 895 flow [2025-02-06 04:36:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:36:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:36:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2025-02-06 04:36:45,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2025-02-06 04:36:45,429 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 261 flow. Second operand 6 states and 150 transitions. [2025-02-06 04:36:45,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 895 flow [2025-02-06 04:36:45,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 126 transitions, 839 flow, removed 28 selfloop flow, removed 0 redundant places. [2025-02-06 04:36:45,439 INFO L231 Difference]: Finished difference. Result has 53 places, 65 transitions, 388 flow [2025-02-06 04:36:45,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=53, PETRI_TRANSITIONS=65} [2025-02-06 04:36:45,441 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2025-02-06 04:36:45,441 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 65 transitions, 388 flow [2025-02-06 04:36:45,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 04:36:45,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:45,441 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:45,449 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 04:36:45,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:45,644 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 04:36:45,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 507330928, now seen corresponding path program 3 times [2025-02-06 04:36:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526459201] [2025-02-06 04:36:45,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:36:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:45,660 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 2 equivalence classes. [2025-02-06 04:36:45,680 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 31 of 35 statements. [2025-02-06 04:36:45,681 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:36:45,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:45,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:45,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526459201] [2025-02-06 04:36:45,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526459201] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:45,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:45,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:36:45,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618051651] [2025-02-06 04:36:45,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:45,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:45,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:45,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:45,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:45,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2025-02-06 04:36:45,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 65 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 04:36:45,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:45,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2025-02-06 04:36:45,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:46,234 INFO L124 PetriNetUnfolderBase]: 3495/6006 cut-off events. [2025-02-06 04:36:46,234 INFO L125 PetriNetUnfolderBase]: For 10648/11022 co-relation queries the response was YES. [2025-02-06 04:36:46,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20261 conditions, 6006 events. 3495/6006 cut-off events. For 10648/11022 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 40221 event pairs, 839 based on Foata normal form. 230/6163 useless extension candidates. Maximal degree in co-relation 7888. Up to 2503 conditions per place. [2025-02-06 04:36:46,273 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 97 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2025-02-06 04:36:46,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 115 transitions, 908 flow [2025-02-06 04:36:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-06 04:36:46,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-02-06 04:36:46,275 INFO L175 Difference]: Start difference. First operand has 53 places, 65 transitions, 388 flow. Second operand 4 states and 76 transitions. [2025-02-06 04:36:46,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 115 transitions, 908 flow [2025-02-06 04:36:46,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 115 transitions, 859 flow, removed 17 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:46,284 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 409 flow [2025-02-06 04:36:46,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2025-02-06 04:36:46,286 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2025-02-06 04:36:46,286 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 409 flow [2025-02-06 04:36:46,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 04:36:46,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:46,287 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:46,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:36:46,287 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 04:36:46,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 187362882, now seen corresponding path program 4 times [2025-02-06 04:36:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:46,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954598674] [2025-02-06 04:36:46,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:36:46,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:46,295 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 04:36:46,313 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:36:46,313 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:36:46,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 04:36:46,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954598674] [2025-02-06 04:36:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954598674] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:46,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:46,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:36:46,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249279004] [2025-02-06 04:36:46,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:46,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:46,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:46,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:46,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-06 04:36:46,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 04:36:46,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:46,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-06 04:36:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:46,707 INFO L124 PetriNetUnfolderBase]: 2176/4314 cut-off events. [2025-02-06 04:36:46,707 INFO L125 PetriNetUnfolderBase]: For 10354/10582 co-relation queries the response was YES. [2025-02-06 04:36:46,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 4314 events. 2176/4314 cut-off events. For 10354/10582 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 30640 event pairs, 699 based on Foata normal form. 398/4584 useless extension candidates. Maximal degree in co-relation 6349. Up to 2025 conditions per place. [2025-02-06 04:36:46,730 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 73 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2025-02-06 04:36:46,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 681 flow [2025-02-06 04:36:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-02-06 04:36:46,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2025-02-06 04:36:46,731 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 409 flow. Second operand 4 states and 71 transitions. [2025-02-06 04:36:46,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 681 flow [2025-02-06 04:36:46,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 673 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:46,738 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 404 flow [2025-02-06 04:36:46,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2025-02-06 04:36:46,738 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2025-02-06 04:36:46,739 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 404 flow [2025-02-06 04:36:46,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 04:36:46,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:46,739 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:46,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:36:46,739 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 04:36:46,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash 536734094, now seen corresponding path program 5 times [2025-02-06 04:36:46,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:46,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199513267] [2025-02-06 04:36:46,740 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:36:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:46,745 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 3 equivalence classes. [2025-02-06 04:36:46,764 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:36:46,764 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:36:46,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:36:47,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199513267] [2025-02-06 04:36:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199513267] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42633875] [2025-02-06 04:36:47,147 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:36:47,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:47,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:47,149 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 04:36:47,152 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 04:36:47,180 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 3 equivalence classes. [2025-02-06 04:36:47,202 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:36:47,203 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:36:47,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:47,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:36:47,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 04:36:47,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:36:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42633875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:47,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:36:47,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-02-06 04:36:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488704297] [2025-02-06 04:36:47,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:47,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:47,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:47,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:36:47,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2025-02-06 04:36:47,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 04:36:47,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:47,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2025-02-06 04:36:47,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:47,675 INFO L124 PetriNetUnfolderBase]: 2796/5212 cut-off events. [2025-02-06 04:36:47,675 INFO L125 PetriNetUnfolderBase]: For 17158/17392 co-relation queries the response was YES. [2025-02-06 04:36:47,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19033 conditions, 5212 events. 2796/5212 cut-off events. For 17158/17392 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 33691 event pairs, 514 based on Foata normal form. 137/5344 useless extension candidates. Maximal degree in co-relation 7837. Up to 2396 conditions per place. [2025-02-06 04:36:47,774 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 97 selfloop transitions, 9 changer transitions 0/116 dead transitions. [2025-02-06 04:36:47,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 946 flow [2025-02-06 04:36:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-06 04:36:47,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-06 04:36:47,776 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 404 flow. Second operand 4 states and 78 transitions. [2025-02-06 04:36:47,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 946 flow [2025-02-06 04:36:47,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 116 transitions, 918 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-06 04:36:47,783 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 438 flow [2025-02-06 04:36:47,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2025-02-06 04:36:47,783 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2025-02-06 04:36:47,783 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 438 flow [2025-02-06 04:36:47,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 04:36:47,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:47,784 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:47,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 04:36:47,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:47,985 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 04:36:47,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash 380186072, now seen corresponding path program 6 times [2025-02-06 04:36:47,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:47,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186157658] [2025-02-06 04:36:47,986 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:36:47,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:47,992 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 3 equivalence classes. [2025-02-06 04:36:48,000 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:36:48,000 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 04:36:48,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 04:36:48,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186157658] [2025-02-06 04:36:48,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186157658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:48,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:48,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:36:48,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767263279] [2025-02-06 04:36:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:48,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:48,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:48,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:48,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:48,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-06 04:36:48,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 04:36:48,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:48,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-06 04:36:48,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:48,159 INFO L124 PetriNetUnfolderBase]: 587/1269 cut-off events. [2025-02-06 04:36:48,160 INFO L125 PetriNetUnfolderBase]: For 5072/5136 co-relation queries the response was YES. [2025-02-06 04:36:48,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 1269 events. 587/1269 cut-off events. For 5072/5136 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7180 event pairs, 193 based on Foata normal form. 103/1351 useless extension candidates. Maximal degree in co-relation 1961. Up to 557 conditions per place. [2025-02-06 04:36:48,163 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2025-02-06 04:36:48,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 514 flow [2025-02-06 04:36:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-02-06 04:36:48,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2025-02-06 04:36:48,164 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 438 flow. Second operand 4 states and 71 transitions. [2025-02-06 04:36:48,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 514 flow [2025-02-06 04:36:48,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 490 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-06 04:36:48,168 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2025-02-06 04:36:48,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2025-02-06 04:36:48,168 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2025-02-06 04:36:48,168 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2025-02-06 04:36:48,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 04:36:48,170 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-02-06 04:36:48,170 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-02-06 04:36:48,170 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-02-06 04:36:48,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:36:48,171 INFO L422 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1] [2025-02-06 04:36:48,173 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 04:36:48,173 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 04:36:48,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 04:36:48 BasicIcfg [2025-02-06 04:36:48,177 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 04:36:48,177 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 04:36:48,177 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 04:36:48,177 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 04:36:48,178 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:36:42" (3/4) ... [2025-02-06 04:36:48,179 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 04:36:48,181 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-06 04:36:48,181 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-06 04:36:48,187 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2025-02-06 04:36:48,187 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-02-06 04:36:48,187 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-06 04:36:48,187 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 04:36:48,242 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 04:36:48,242 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 04:36:48,242 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 04:36:48,242 INFO L158 Benchmark]: Toolchain (without parser) took 6461.10ms. Allocated memory was 167.8MB in the beginning and 545.3MB in the end (delta: 377.5MB). Free memory was 124.8MB in the beginning and 371.0MB in the end (delta: -246.2MB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. [2025-02-06 04:36:48,243 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:36:48,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.06ms. Allocated memory is still 167.8MB. Free memory was 124.8MB in the beginning and 112.9MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:36:48,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.80ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 112.2MB in the end (delta: 711.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:36:48,243 INFO L158 Benchmark]: Boogie Preprocessor took 22.55ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 110.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:36:48,244 INFO L158 Benchmark]: IcfgBuilder took 313.80ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 89.2MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 04:36:48,244 INFO L158 Benchmark]: TraceAbstraction took 5864.90ms. Allocated memory was 167.8MB in the beginning and 545.3MB in the end (delta: 377.5MB). Free memory was 88.5MB in the beginning and 379.4MB in the end (delta: -290.9MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2025-02-06 04:36:48,244 INFO L158 Benchmark]: Witness Printer took 64.84ms. Allocated memory is still 545.3MB. Free memory was 379.4MB in the beginning and 371.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:36:48,245 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.06ms. Allocated memory is still 167.8MB. Free memory was 124.8MB in the beginning and 112.9MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.80ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 112.2MB in the end (delta: 711.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.55ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 110.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 313.80ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 89.2MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5864.90ms. Allocated memory was 167.8MB in the beginning and 545.3MB in the end (delta: 377.5MB). Free memory was 88.5MB in the beginning and 379.4MB in the end (delta: -290.9MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. * Witness Printer took 64.84ms. Allocated memory is still 545.3MB. Free memory was 379.4MB in the beginning and 371.0MB 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: 91]: 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, 45 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: 5.8s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 753 IncrementalHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 4 mSDtfsCounter, 753 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=438occurred in iteration=10, InterpolantAutomatonStates: 44, 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, 1.7s InterpolantComputationTime, 399 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 445 ConstructedInterpolants, 0 QuantifiedInterpolants, 1465 SizeOfPredicates, 6 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 42/88 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 04:36:48,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE