./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/fib_safe-11.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:08:45,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:08:45,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:08:45,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:08:45,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:08:45,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:08:45,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:08:45,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:08:45,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:08:45,486 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:08:45,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:08:45,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:08:45,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:08:45,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:08:45,487 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:08:45,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:08:45,487 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:08:45,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:08:45,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:08:45,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:08:45,487 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:08:45,488 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:08:45,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:08:45,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:08:45,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:08:45,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:08:45,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:08:45,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:08:45,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:08:45,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:08:45,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:08:45,489 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2025-02-08 08:08:45,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:08:45,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:08:45,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:08:45,779 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:08:45,779 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:08:45,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-11.i [2025-02-08 08:08:47,087 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e8b0d697b/09e6279efb784183a5ecde352f8d6fb2/FLAG3ea030b2c [2025-02-08 08:08:47,360 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:08:47,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2025-02-08 08:08:47,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e8b0d697b/09e6279efb784183a5ecde352f8d6fb2/FLAG3ea030b2c [2025-02-08 08:08:47,391 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e8b0d697b/09e6279efb784183a5ecde352f8d6fb2 [2025-02-08 08:08:47,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:08:47,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:08:47,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:08:47,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:08:47,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:08:47,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448633cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47, skipping insertion in model container [2025-02-08 08:08:47,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:08:47,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:08:47,761 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:08:47,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:08:47,842 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:08:47,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47 WrapperNode [2025-02-08 08:08:47,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:08:47,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:08:47,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:08:47,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:08:47,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,871 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2025-02-08 08:08:47,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:08:47,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:08:47,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:08:47,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:08:47,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,892 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]. [2025-02-08 08:08:47,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,897 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:08:47,901 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:08:47,902 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:08:47,902 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:08:47,902 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (1/1) ... [2025-02-08 08:08:47,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:08:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:08:47,932 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) [2025-02-08 08:08:47,937 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 [2025-02-08 08:08:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 08:08:47,953 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 08:08:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 08:08:47,953 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 08:08:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:08:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:08:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:08:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:08:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:08:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:08:47,955 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:08:48,047 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:08:48,048 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:08:48,192 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:08:48,192 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:08:48,295 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:08:48,295 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:08:48,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:08:48 BoogieIcfgContainer [2025-02-08 08:08:48,296 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:08:48,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:08:48,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:08:48,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:08:48,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:08:47" (1/3) ... [2025-02-08 08:08:48,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624ba8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:08:48, skipping insertion in model container [2025-02-08 08:08:48,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:08:47" (2/3) ... [2025-02-08 08:08:48,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624ba8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:08:48, skipping insertion in model container [2025-02-08 08:08:48,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:08:48" (3/3) ... [2025-02-08 08:08:48,308 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2025-02-08 08:08:48,322 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:08:48,323 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-11.i that has 3 procedures, 30 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-02-08 08:08:48,324 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:08:48,361 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:08:48,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2025-02-08 08:08:48,431 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2025-02-08 08:08:48,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:08:48,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 5/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2025-02-08 08:08:48,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2025-02-08 08:08:48,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2025-02-08 08:08:48,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:08:48,465 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=None, 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;@3b2c6926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:08:48,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 08:08:48,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:08:48,480 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2025-02-08 08:08:48,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:08:48,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:08:48,481 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:08:48,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:08:48,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:08:48,487 INFO L85 PathProgramCache]: Analyzing trace with hash -782702448, now seen corresponding path program 1 times [2025-02-08 08:08:48,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:08:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968684497] [2025-02-08 08:08:48,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:08:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:08:48,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:08:48,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:08:48,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:08:48,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:48,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:08:48,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968684497] [2025-02-08 08:08:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968684497] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:08:48,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:08:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:08:48,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374108497] [2025-02-08 08:08:48,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:08:48,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:08:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:08:48,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:08:48,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:08:48,762 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-02-08 08:08:48,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:08:48,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:08:48,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-02-08 08:08:48,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:08:48,946 INFO L124 PetriNetUnfolderBase]: 297/523 cut-off events. [2025-02-08 08:08:48,946 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 08:08:48,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 523 events. 297/523 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2146 event pairs, 39 based on Foata normal form. 32/534 useless extension candidates. Maximal degree in co-relation 974. Up to 353 conditions per place. [2025-02-08 08:08:48,952 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 29 selfloop transitions, 2 changer transitions 1/38 dead transitions. [2025-02-08 08:08:48,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 146 flow [2025-02-08 08:08:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:08:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:08:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2025-02-08 08:08:48,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2025-02-08 08:08:48,967 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 59 transitions. [2025-02-08 08:08:48,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 146 flow [2025-02-08 08:08:48,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:08:48,975 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2025-02-08 08:08:48,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2025-02-08 08:08:48,980 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2025-02-08 08:08:48,980 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2025-02-08 08:08:48,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:08:48,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:08:48,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:08:48,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:08:48,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:08:48,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:08:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1732255421, now seen corresponding path program 1 times [2025-02-08 08:08:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:08:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623904320] [2025-02-08 08:08:48,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:08:48,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:08:48,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:08:48,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:08:48,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:08:48,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:08:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623904320] [2025-02-08 08:08:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623904320] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:08:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188972345] [2025-02-08 08:08:49,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:08:49,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:49,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:08:49,090 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) [2025-02-08 08:08:49,092 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 [2025-02-08 08:08:49,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:08:49,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:08:49,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:08:49,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:49,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 08:08:49,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:08:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:08:49,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:08:49,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188972345] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:08:49,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 08:08:49,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-08 08:08:49,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778425668] [2025-02-08 08:08:49,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:08:49,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:08:49,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:08:49,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:08:49,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:08:49,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-02-08 08:08:49,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-02-08 08:08:49,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:08:49,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-02-08 08:08:49,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:08:49,320 INFO L124 PetriNetUnfolderBase]: 265/459 cut-off events. [2025-02-08 08:08:49,320 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:08:49,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 459 events. 265/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1777 event pairs, 183 based on Foata normal form. 16/454 useless extension candidates. Maximal degree in co-relation 926. Up to 405 conditions per place. [2025-02-08 08:08:49,324 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 21 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2025-02-08 08:08:49,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 116 flow [2025-02-08 08:08:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:08:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:08:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-08 08:08:49,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2025-02-08 08:08:49,327 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 44 transitions. [2025-02-08 08:08:49,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 116 flow [2025-02-08 08:08:49,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:08:49,329 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2025-02-08 08:08:49,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2025-02-08 08:08:49,330 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2025-02-08 08:08:49,330 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2025-02-08 08:08:49,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-02-08 08:08:49,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:08:49,330 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:08:49,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:08:49,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:49,532 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:08:49,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:08:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1732256997, now seen corresponding path program 1 times [2025-02-08 08:08:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:08:49,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401829686] [2025-02-08 08:08:49,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:08:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:08:49,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:08:49,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:08:49,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:08:49,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:49,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:08:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401829686] [2025-02-08 08:08:49,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401829686] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:08:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137047039] [2025-02-08 08:08:49,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:08:49,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:49,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:08:49,616 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) [2025-02-08 08:08:49,617 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 [2025-02-08 08:08:49,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:08:49,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:08:49,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:08:49,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:49,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:08:49,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:08:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:49,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:08:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137047039] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:08:49,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:08:49,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-08 08:08:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560136292] [2025-02-08 08:08:49,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:08:49,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:08:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:08:49,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:08:49,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:08:49,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-02-08 08:08:49,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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) [2025-02-08 08:08:49,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:08:49,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-02-08 08:08:49,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:08:49,902 INFO L124 PetriNetUnfolderBase]: 329/555 cut-off events. [2025-02-08 08:08:49,903 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:08:49,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 555 events. 329/555 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2089 event pairs, 39 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 1160. Up to 257 conditions per place. [2025-02-08 08:08:49,909 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 52 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2025-02-08 08:08:49,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 258 flow [2025-02-08 08:08:49,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:08:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:08:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-02-08 08:08:49,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-02-08 08:08:49,911 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 108 transitions. [2025-02-08 08:08:49,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 258 flow [2025-02-08 08:08:49,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 62 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:08:49,912 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2025-02-08 08:08:49,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2025-02-08 08:08:49,913 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2025-02-08 08:08:49,913 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2025-02-08 08:08:49,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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) [2025-02-08 08:08:49,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:08:49,913 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:08:49,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:08:50,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:50,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:08:50,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:08:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1400139272, now seen corresponding path program 2 times [2025-02-08 08:08:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:08:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351538648] [2025-02-08 08:08:50,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:08:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:08:50,128 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-08 08:08:50,148 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 08:08:50,149 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:08:50,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:50,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:08:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351538648] [2025-02-08 08:08:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351538648] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:08:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011836378] [2025-02-08 08:08:50,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:08:50,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:50,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:08:50,278 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) [2025-02-08 08:08:50,280 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 [2025-02-08 08:08:50,329 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-08 08:08:50,348 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 08:08:50,348 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:08:50,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:50,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:08:50,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:08:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:50,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:08:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:50,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011836378] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:08:50,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:08:50,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-08 08:08:50,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876976885] [2025-02-08 08:08:50,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:08:50,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 08:08:50,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:08:50,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 08:08:50,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 08:08:50,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-02-08 08:08:50,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:08:50,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:08:50,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-02-08 08:08:50,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:08:50,685 INFO L124 PetriNetUnfolderBase]: 521/843 cut-off events. [2025-02-08 08:08:50,686 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2025-02-08 08:08:50,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 843 events. 521/843 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3087 event pairs, 39 based on Foata normal form. 96/934 useless extension candidates. Maximal degree in co-relation 2104. Up to 257 conditions per place. [2025-02-08 08:08:50,709 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 100 selfloop transitions, 11 changer transitions 0/116 dead transitions. [2025-02-08 08:08:50,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 116 transitions, 521 flow [2025-02-08 08:08:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 08:08:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 08:08:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2025-02-08 08:08:50,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2025-02-08 08:08:50,714 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 213 transitions. [2025-02-08 08:08:50,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 116 transitions, 521 flow [2025-02-08 08:08:50,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 116 transitions, 507 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-02-08 08:08:50,722 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2025-02-08 08:08:50,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2025-02-08 08:08:50,724 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2025-02-08 08:08:50,724 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2025-02-08 08:08:50,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:08:50,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:08:50,724 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:08:50,733 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 [2025-02-08 08:08:50,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:50,928 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:08:50,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:08:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1716632280, now seen corresponding path program 3 times [2025-02-08 08:08:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:08:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933897630] [2025-02-08 08:08:50,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:08:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:08:50,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-02-08 08:08:50,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:08:50,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 08:08:50,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:08:51,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933897630] [2025-02-08 08:08:51,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933897630] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:08:51,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954110895] [2025-02-08 08:08:51,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:08:51,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:08:51,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:08:51,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:08:51,216 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-02-08 08:08:51,241 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:08:51,241 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 08:08:51,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:51,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 08:08:51,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:08:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:51,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:08:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:51,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954110895] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:08:51,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:08:51,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-08 08:08:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701941671] [2025-02-08 08:08:51,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:08:51,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:08:51,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:08:51,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:08:51,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:08:51,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-02-08 08:08:51,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 25 states have internal predecessors, (236), 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) [2025-02-08 08:08:51,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:08:51,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-02-08 08:08:51,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:08:51,975 INFO L124 PetriNetUnfolderBase]: 905/1419 cut-off events. [2025-02-08 08:08:51,975 INFO L125 PetriNetUnfolderBase]: For 7468/7468 co-relation queries the response was YES. [2025-02-08 08:08:51,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 1419 events. 905/1419 cut-off events. For 7468/7468 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5226 event pairs, 39 based on Foata normal form. 192/1606 useless extension candidates. Maximal degree in co-relation 4104. Up to 337 conditions per place. [2025-02-08 08:08:51,988 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 196 selfloop transitions, 23 changer transitions 0/224 dead transitions. [2025-02-08 08:08:51,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 224 transitions, 1059 flow [2025-02-08 08:08:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 08:08:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 08:08:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 423 transitions. [2025-02-08 08:08:51,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183823529411765 [2025-02-08 08:08:51,991 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 24 states and 423 transitions. [2025-02-08 08:08:51,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 224 transitions, 1059 flow [2025-02-08 08:08:52,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 224 transitions, 987 flow, removed 31 selfloop flow, removed 5 redundant places. [2025-02-08 08:08:52,003 INFO L231 Difference]: Finished difference. Result has 85 places, 48 transitions, 293 flow [2025-02-08 08:08:52,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=293, PETRI_PLACES=85, PETRI_TRANSITIONS=48} [2025-02-08 08:08:52,004 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2025-02-08 08:08:52,004 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 48 transitions, 293 flow [2025-02-08 08:08:52,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 25 states have internal predecessors, (236), 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) [2025-02-08 08:08:52,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:08:52,004 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:08:52,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:08:52,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:52,205 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:08:52,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:08:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash -490892136, now seen corresponding path program 4 times [2025-02-08 08:08:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:08:52,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628248310] [2025-02-08 08:08:52,206 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:08:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:08:52,216 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-08 08:08:52,228 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 08:08:52,229 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:08:52,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:08:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628248310] [2025-02-08 08:08:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628248310] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:08:52,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367686808] [2025-02-08 08:08:52,731 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:08:52,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:52,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:08:52,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:08:52,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:08:52,788 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-08 08:08:52,823 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 08:08:52,823 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:08:52,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:52,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 08:08:52,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:08:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:52,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:08:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367686808] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:08:53,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:08:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2025-02-08 08:08:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423801382] [2025-02-08 08:08:53,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:08:53,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 08:08:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:08:53,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 08:08:53,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2025-02-08 08:08:53,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-02-08 08:08:53,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 48 transitions, 293 flow. Second operand has 26 states, 26 states have (on average 9.423076923076923) internal successors, (245), 26 states have internal predecessors, (245), 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) [2025-02-08 08:08:53,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:08:53,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-02-08 08:08:53,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:08:53,703 INFO L124 PetriNetUnfolderBase]: 969/1515 cut-off events. [2025-02-08 08:08:53,703 INFO L125 PetriNetUnfolderBase]: For 9868/9868 co-relation queries the response was YES. [2025-02-08 08:08:53,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 1515 events. 969/1515 cut-off events. For 9868/9868 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5509 event pairs, 39 based on Foata normal form. 32/1542 useless extension candidates. Maximal degree in co-relation 4584. Up to 273 conditions per place. [2025-02-08 08:08:53,713 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 212 selfloop transitions, 25 changer transitions 0/242 dead transitions. [2025-02-08 08:08:53,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 242 transitions, 1167 flow [2025-02-08 08:08:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 08:08:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 08:08:53,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 447 transitions. [2025-02-08 08:08:53,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.505656108597285 [2025-02-08 08:08:53,719 INFO L175 Difference]: Start difference. First operand has 85 places, 48 transitions, 293 flow. Second operand 26 states and 447 transitions. [2025-02-08 08:08:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 242 transitions, 1167 flow [2025-02-08 08:08:53,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 242 transitions, 1067 flow, removed 39 selfloop flow, removed 11 redundant places. [2025-02-08 08:08:53,738 INFO L231 Difference]: Finished difference. Result has 101 places, 50 transitions, 269 flow [2025-02-08 08:08:53,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=269, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2025-02-08 08:08:53,741 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 67 predicate places. [2025-02-08 08:08:53,741 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 269 flow [2025-02-08 08:08:53,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.423076923076923) internal successors, (245), 26 states have internal predecessors, (245), 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) [2025-02-08 08:08:53,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:08:53,743 INFO L206 CegarLoopForPetriNet]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:08:53,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:08:53,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:53,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:08:53,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:08:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash -653106632, now seen corresponding path program 5 times [2025-02-08 08:08:53,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:08:53,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524256168] [2025-02-08 08:08:53,944 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:08:53,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:08:53,953 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 13 equivalence classes. [2025-02-08 08:08:54,064 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 08:08:54,064 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-08 08:08:54,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:55,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:08:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524256168] [2025-02-08 08:08:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524256168] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:08:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754077288] [2025-02-08 08:08:55,879 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:08:55,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:08:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:08:55,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:08:55,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:08:55,926 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 13 equivalence classes. [2025-02-08 08:08:55,966 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 08:08:55,966 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-08 08:08:55,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:08:55,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 83 conjuncts are in the unsatisfiable core [2025-02-08 08:08:55,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:08:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 253 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:57,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:08:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:08:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754077288] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:08:59,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:08:59,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 91 [2025-02-08 08:08:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597408204] [2025-02-08 08:08:59,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:08:59,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2025-02-08 08:08:59,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:08:59,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2025-02-08 08:08:59,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1173, Invalid=7199, Unknown=0, NotChecked=0, Total=8372 [2025-02-08 08:08:59,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-02-08 08:08:59,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 50 transitions, 269 flow. Second operand has 92 states, 92 states have (on average 8.173913043478262) internal successors, (752), 92 states have internal predecessors, (752), 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) [2025-02-08 08:08:59,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:08:59,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-02-08 08:08:59,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand