./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe037.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/safe037.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:11:04,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:11:04,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:11:04,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:11:04,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:11:04,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:11:04,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:11:04,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:11:04,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:11:04,859 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:11:04,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:11:04,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:11:04,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:11:04,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:11:04,860 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:11:04,861 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:11:04,861 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:11:04,862 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:04,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:11:04,862 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 [2025-03-09 01:11:05,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:11:05,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:11:05,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:11:05,096 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:11:05,096 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:11:05,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe037.i [2025-03-09 01:11:06,259 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f207c8042/b420dcf7b8b64c78b13c3205d48e85af/FLAG5670c6339 [2025-03-09 01:11:06,534 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:11:06,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037.i [2025-03-09 01:11:06,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f207c8042/b420dcf7b8b64c78b13c3205d48e85af/FLAG5670c6339 [2025-03-09 01:11:06,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f207c8042/b420dcf7b8b64c78b13c3205d48e85af [2025-03-09 01:11:06,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:11:06,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:11:06,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:06,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:11:06,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:11:06,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:06" (1/1) ... [2025-03-09 01:11:06,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fdd72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:06, skipping insertion in model container [2025-03-09 01:11:06,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:06" (1/1) ... [2025-03-09 01:11:06,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:11:07,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:07,150 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:11:07,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:07,216 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:11:07,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07 WrapperNode [2025-03-09 01:11:07,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:07,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:11:07,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:11:07,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:11:07,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,254 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2025-03-09 01:11:07,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:11:07,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:11:07,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:11:07,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:11:07,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,265 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 01:11:07,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,283 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:11:07,291 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:11:07,291 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:11:07,291 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:11:07,292 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (1/1) ... [2025-03-09 01:11:07,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:07,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:07,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 01:11:07,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 01:11:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 01:11:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:11:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-09 01:11:07,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-09 01:11:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-09 01:11:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-09 01:11:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-09 01:11:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-09 01:11:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:11:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 01:11:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:11:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:11:07,337 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:11:07,430 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:11:07,431 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:11:07,573 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:11:07,573 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:11:07,645 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:11:07,646 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:11:07,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:11:07 BoogieIcfgContainer [2025-03-09 01:11:07,646 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:11:07,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:11:07,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:11:07,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:11:07,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:11:06" (1/3) ... [2025-03-09 01:11:07,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c6f0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:11:07, skipping insertion in model container [2025-03-09 01:11:07,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:07" (2/3) ... [2025-03-09 01:11:07,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c6f0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:11:07, skipping insertion in model container [2025-03-09 01:11:07,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:11:07" (3/3) ... [2025-03-09 01:11:07,654 INFO L128 eAbstractionObserver]: Analyzing ICFG safe037.i [2025-03-09 01:11:07,665 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:11:07,667 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe037.i that has 4 procedures, 45 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-09 01:11:07,667 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:11:07,701 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 01:11:07,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 46 transitions, 104 flow [2025-03-09 01:11:07,753 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2025-03-09 01:11:07,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:11:07,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 2/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-03-09 01:11:07,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 46 transitions, 104 flow [2025-03-09 01:11:07,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 42 transitions, 93 flow [2025-03-09 01:11:07,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:11:07,776 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;@3fcc561, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:11:07,776 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-09 01:11:07,788 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:11:07,789 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2025-03-09 01:11:07,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:11:07,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:07,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:07,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:11:07,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:07,795 INFO L85 PathProgramCache]: Analyzing trace with hash -145120688, now seen corresponding path program 1 times [2025-03-09 01:11:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:11:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446040064] [2025-03-09 01:11:07,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:11:07,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:11:07,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:11:07,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:07,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:08,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:11:08,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446040064] [2025-03-09 01:11:08,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446040064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:08,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:08,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:11:08,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237127682] [2025-03-09 01:11:08,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:08,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:08,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:11:08,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:08,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:08,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-09 01:11:08,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-09 01:11:08,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:09,025 INFO L124 PetriNetUnfolderBase]: 7776/11818 cut-off events. [2025-03-09 01:11:09,026 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-09 01:11:09,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22913 conditions, 11818 events. 7776/11818 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 71387 event pairs, 7776 based on Foata normal form. 980/12738 useless extension candidates. Maximal degree in co-relation 22902. Up to 10976 conditions per place. [2025-03-09 01:11:09,103 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 30 selfloop transitions, 1 changer transitions 1/38 dead transitions. [2025-03-09 01:11:09,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 149 flow [2025-03-09 01:11:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-03-09 01:11:09,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2025-03-09 01:11:09,117 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 93 flow. Second operand 3 states and 62 transitions. [2025-03-09 01:11:09,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 149 flow [2025-03-09 01:11:09,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 38 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:11:09,124 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 82 flow [2025-03-09 01:11:09,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2025-03-09 01:11:09,130 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2025-03-09 01:11:09,132 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 82 flow [2025-03-09 01:11:09,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:09,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:09,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:09,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:11:09,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:11:09,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash -145120213, now seen corresponding path program 1 times [2025-03-09 01:11:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:11:09,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12146482] [2025-03-09 01:11:09,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:11:09,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:11:09,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:11:09,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:09,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:11:09,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12146482] [2025-03-09 01:11:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12146482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:09,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:09,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:11:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833040514] [2025-03-09 01:11:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:09,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:11:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:11:09,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:11:09,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:11:09,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-09 01:11:09,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:09,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:09,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-09 01:11:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:09,853 INFO L124 PetriNetUnfolderBase]: 5308/8421 cut-off events. [2025-03-09 01:11:09,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:11:09,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16297 conditions, 8421 events. 5308/8421 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 51019 event pairs, 994 based on Foata normal form. 343/8753 useless extension candidates. Maximal degree in co-relation 16291. Up to 4351 conditions per place. [2025-03-09 01:11:09,895 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 64 selfloop transitions, 5 changer transitions 1/76 dead transitions. [2025-03-09 01:11:09,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 304 flow [2025-03-09 01:11:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:11:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:11:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-03-09 01:11:09,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2025-03-09 01:11:09,897 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 82 flow. Second operand 4 states and 112 transitions. [2025-03-09 01:11:09,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 304 flow [2025-03-09 01:11:09,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:11:09,899 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 115 flow [2025-03-09 01:11:09,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-03-09 01:11:09,901 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2025-03-09 01:11:09,901 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 115 flow [2025-03-09 01:11:09,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:09,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:09,902 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] [2025-03-09 01:11:09,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:11:09,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:11:09,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:09,902 INFO L85 PathProgramCache]: Analyzing trace with hash 568857242, now seen corresponding path program 1 times [2025-03-09 01:11:09,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:11:09,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952568272] [2025-03-09 01:11:09,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:09,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:11:09,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 01:11:09,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:11:09,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:09,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:11:10,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952568272] [2025-03-09 01:11:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952568272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:10,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:11:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703703350] [2025-03-09 01:11:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:10,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:11:10,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:10,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:10,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-09 01:11:10,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:10,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:10,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-09 01:11:10,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:10,422 INFO L124 PetriNetUnfolderBase]: 2833/4471 cut-off events. [2025-03-09 01:11:10,422 INFO L125 PetriNetUnfolderBase]: For 777/777 co-relation queries the response was YES. [2025-03-09 01:11:10,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10062 conditions, 4471 events. 2833/4471 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 23128 event pairs, 651 based on Foata normal form. 218/4678 useless extension candidates. Maximal degree in co-relation 10053. Up to 1515 conditions per place. [2025-03-09 01:11:10,437 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 82 selfloop transitions, 8 changer transitions 1/97 dead transitions. [2025-03-09 01:11:10,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 97 transitions, 432 flow [2025-03-09 01:11:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:11:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:11:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2025-03-09 01:11:10,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6217391304347826 [2025-03-09 01:11:10,439 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 115 flow. Second operand 5 states and 143 transitions. [2025-03-09 01:11:10,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 97 transitions, 432 flow [2025-03-09 01:11:10,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 97 transitions, 422 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:10,445 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 155 flow [2025-03-09 01:11:10,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2025-03-09 01:11:10,446 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2025-03-09 01:11:10,446 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 155 flow [2025-03-09 01:11:10,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:10,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:10,447 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, 1, 1, 1, 1, 1] [2025-03-09 01:11:10,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:11:10,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:11:10,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash 378072923, now seen corresponding path program 1 times [2025-03-09 01:11:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:11:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132919648] [2025-03-09 01:11:10,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:11:10,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 01:11:10,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 01:11:10,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:10,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:11:10,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132919648] [2025-03-09 01:11:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132919648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:10,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:11:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332200271] [2025-03-09 01:11:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:10,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:11:10,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:11:10,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:11:10,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:11:10,642 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-09 01:11:10,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:10,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:10,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-09 01:11:10,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:11,246 INFO L124 PetriNetUnfolderBase]: 3950/6127 cut-off events. [2025-03-09 01:11:11,247 INFO L125 PetriNetUnfolderBase]: For 2974/2974 co-relation queries the response was YES. [2025-03-09 01:11:11,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14775 conditions, 6127 events. 3950/6127 cut-off events. For 2974/2974 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 32699 event pairs, 616 based on Foata normal form. 0/6036 useless extension candidates. Maximal degree in co-relation 14764. Up to 3162 conditions per place. [2025-03-09 01:11:11,269 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 65 selfloop transitions, 2 changer transitions 80/152 dead transitions. [2025-03-09 01:11:11,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 152 transitions, 803 flow [2025-03-09 01:11:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:11:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:11:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2025-03-09 01:11:11,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2025-03-09 01:11:11,271 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 155 flow. Second operand 9 states and 215 transitions. [2025-03-09 01:11:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 152 transitions, 803 flow [2025-03-09 01:11:11,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 152 transitions, 746 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:11,289 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 150 flow [2025-03-09 01:11:11,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2025-03-09 01:11:11,290 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2025-03-09 01:11:11,290 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 150 flow [2025-03-09 01:11:11,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:11,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:11,291 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, 1, 1, 1, 1, 1] [2025-03-09 01:11:11,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:11:11,291 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:11:11,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:11,292 INFO L85 PathProgramCache]: Analyzing trace with hash -823273859, now seen corresponding path program 2 times [2025-03-09 01:11:11,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:11:11,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881302087] [2025-03-09 01:11:11,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:11:11,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:11:11,303 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 1 equivalence classes. [2025-03-09 01:11:11,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 01:11:11,312 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:11:11,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:11:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881302087] [2025-03-09 01:11:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881302087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:11,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:11,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:11,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453786685] [2025-03-09 01:11:11,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:11,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:11:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:11:11,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:11:11,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:11:11,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-09 01:11:11,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:11,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:11,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-09 01:11:11,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:11,731 INFO L124 PetriNetUnfolderBase]: 2654/4054 cut-off events. [2025-03-09 01:11:11,732 INFO L125 PetriNetUnfolderBase]: For 1638/1638 co-relation queries the response was YES. [2025-03-09 01:11:11,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9777 conditions, 4054 events. 2654/4054 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19950 event pairs, 760 based on Foata normal form. 120/4164 useless extension candidates. Maximal degree in co-relation 9763. Up to 1558 conditions per place. [2025-03-09 01:11:11,745 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 65 selfloop transitions, 11 changer transitions 6/87 dead transitions. [2025-03-09 01:11:11,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 427 flow [2025-03-09 01:11:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:11:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:11:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2025-03-09 01:11:11,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2025-03-09 01:11:11,746 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 150 flow. Second operand 6 states and 142 transitions. [2025-03-09 01:11:11,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 427 flow [2025-03-09 01:11:11,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 87 transitions, 416 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:11,750 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 173 flow [2025-03-09 01:11:11,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2025-03-09 01:11:11,750 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2025-03-09 01:11:11,750 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 173 flow [2025-03-09 01:11:11,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:11,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:11,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:11,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:11:11,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:11:11,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash -96421810, now seen corresponding path program 1 times [2025-03-09 01:11:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:11:11,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652738126] [2025-03-09 01:11:11,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:11:11,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 01:11:11,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:11:11,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:11,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:11,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:11:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652738126] [2025-03-09 01:11:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652738126] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:11,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:11:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383422502] [2025-03-09 01:11:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:11,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:11:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:11:11,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:11:11,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:11:11,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-09 01:11:11,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:11,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:11,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-09 01:11:11,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:12,174 INFO L124 PetriNetUnfolderBase]: 2242/3490 cut-off events. [2025-03-09 01:11:12,174 INFO L125 PetriNetUnfolderBase]: For 2469/2469 co-relation queries the response was YES. [2025-03-09 01:11:12,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8907 conditions, 3490 events. 2242/3490 cut-off events. For 2469/2469 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17178 event pairs, 304 based on Foata normal form. 8/3488 useless extension candidates. Maximal degree in co-relation 8893. Up to 1854 conditions per place. [2025-03-09 01:11:12,182 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 45 selfloop transitions, 1 changer transitions 37/88 dead transitions. [2025-03-09 01:11:12,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 533 flow [2025-03-09 01:11:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:11:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:11:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2025-03-09 01:11:12,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2025-03-09 01:11:12,184 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 173 flow. Second operand 6 states and 124 transitions. [2025-03-09 01:11:12,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 533 flow [2025-03-09 01:11:12,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 404 flow, removed 22 selfloop flow, removed 9 redundant places. [2025-03-09 01:11:12,193 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 126 flow [2025-03-09 01:11:12,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2025-03-09 01:11:12,194 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2025-03-09 01:11:12,194 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 126 flow [2025-03-09 01:11:12,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:12,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:12,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:12,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:11:12,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:11:12,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1500675240, now seen corresponding path program 2 times [2025-03-09 01:11:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:11:12,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035962910] [2025-03-09 01:11:12,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:11:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:11:12,201 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 1 equivalence classes. [2025-03-09 01:11:12,206 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:11:12,206 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:11:12,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:12,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:11:12,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035962910] [2025-03-09 01:11:12,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035962910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:12,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:12,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:11:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939697398] [2025-03-09 01:11:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:12,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:11:12,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:11:12,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:11:12,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:11:12,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-09 01:11:12,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:12,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:12,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-09 01:11:12,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:12,538 INFO L124 PetriNetUnfolderBase]: 1814/2865 cut-off events. [2025-03-09 01:11:12,539 INFO L125 PetriNetUnfolderBase]: For 648/648 co-relation queries the response was YES. [2025-03-09 01:11:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6594 conditions, 2865 events. 1814/2865 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14659 event pairs, 368 based on Foata normal form. 8/2869 useless extension candidates. Maximal degree in co-relation 6586. Up to 1550 conditions per place. [2025-03-09 01:11:12,544 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2025-03-09 01:11:12,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 393 flow [2025-03-09 01:11:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:11:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:11:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2025-03-09 01:11:12,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2025-03-09 01:11:12,546 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 126 flow. Second operand 6 states and 122 transitions. [2025-03-09 01:11:12,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 393 flow [2025-03-09 01:11:12,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 387 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 01:11:12,547 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2025-03-09 01:11:12,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2025-03-09 01:11:12,548 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2025-03-09 01:11:12,548 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2025-03-09 01:11:12,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:12,550 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-03-09 01:11:12,551 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-09 01:11:12,551 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-09 01:11:12,551 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-09 01:11:12,551 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-09 01:11:12,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 01:11:12,551 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2025-03-09 01:11:12,553 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 01:11:12,554 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 01:11:12,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 01:11:12 BasicIcfg [2025-03-09 01:11:12,557 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 01:11:12,558 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 01:11:12,558 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 01:11:12,558 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 01:11:12,559 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:11:07" (3/4) ... [2025-03-09 01:11:12,560 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 01:11:12,562 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-09 01:11:12,562 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-09 01:11:12,562 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-09 01:11:12,565 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-03-09 01:11:12,565 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-09 01:11:12,565 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-09 01:11:12,565 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 01:11:12,619 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 01:11:12,619 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 01:11:12,619 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 01:11:12,620 INFO L158 Benchmark]: Toolchain (without parser) took 5784.21ms. Allocated memory was 142.6MB in the beginning and 503.3MB in the end (delta: 360.7MB). Free memory was 103.2MB in the beginning and 158.9MB in the end (delta: -55.7MB). Peak memory consumption was 306.1MB. Max. memory is 16.1GB. [2025-03-09 01:11:12,620 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:11:12,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.45ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 83.5MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:11:12,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.06ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 81.4MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:11:12,620 INFO L158 Benchmark]: Boogie Preprocessor took 34.10ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 80.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:11:12,620 INFO L158 Benchmark]: IcfgBuilder took 355.28ms. Allocated memory is still 142.6MB. Free memory was 80.3MB in the beginning and 60.2MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:11:12,621 INFO L158 Benchmark]: TraceAbstraction took 4909.04ms. Allocated memory was 142.6MB in the beginning and 503.3MB in the end (delta: 360.7MB). Free memory was 59.1MB in the beginning and 163.3MB in the end (delta: -104.1MB). Peak memory consumption was 255.8MB. Max. memory is 16.1GB. [2025-03-09 01:11:12,621 INFO L158 Benchmark]: Witness Printer took 61.38ms. Allocated memory is still 503.3MB. Free memory was 163.3MB in the beginning and 158.9MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:11:12,623 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.45ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 83.5MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.06ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 81.4MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.10ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 80.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 355.28ms. Allocated memory is still 142.6MB. Free memory was 80.3MB in the beginning and 60.2MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4909.04ms. Allocated memory was 142.6MB in the beginning and 503.3MB in the end (delta: 360.7MB). Free memory was 59.1MB in the beginning and 163.3MB in the end (delta: -104.1MB). Peak memory consumption was 255.8MB. Max. memory is 16.1GB. * Witness Printer took 61.38ms. Allocated memory is still 503.3MB. Free memory was 163.3MB in the beginning and 158.9MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 784]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 72 locations, 70 edges, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 499 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 498 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1202 IncrementalHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1 mSDtfsCounter, 1202 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=5, InterpolantAutomatonStates: 39, 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, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 01:11:12,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE