./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:26:13,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:26:13,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:26:13,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:26:13,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:26:13,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:26:13,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:26:13,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:26:13,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:26:13,270 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:26:13,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:26:13,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:26:13,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:26:13,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:26:13,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:26:13,272 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:26:13,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:26:13,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:26:13,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:26:13,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:26:13,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:26:13,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:26:13,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:26:13,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:26:13,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:26:13,273 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 -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2025-03-17 14:26:13,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:26:13,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:26:13,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:26:13,480 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:26:13,480 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:26:13,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-03-17 14:26:14,566 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec8d2097/033163f98e1e46a1b0d7c92cbcea51f8/FLAG4e32aa139 [2025-03-17 14:26:14,797 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:26:14,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-03-17 14:26:14,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec8d2097/033163f98e1e46a1b0d7c92cbcea51f8/FLAG4e32aa139 [2025-03-17 14:26:15,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec8d2097/033163f98e1e46a1b0d7c92cbcea51f8 [2025-03-17 14:26:15,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:26:15,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:26:15,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:26:15,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:26:15,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:26:15,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22da2d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15, skipping insertion in model container [2025-03-17 14:26:15,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:26:15,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:26:15,267 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:26:15,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:26:15,288 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:26:15,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15 WrapperNode [2025-03-17 14:26:15,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:26:15,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:26:15,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:26:15,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:26:15,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,312 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 131 [2025-03-17 14:26:15,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:26:15,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:26:15,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:26:15,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:26:15,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,335 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 14:26:15,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,342 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:26:15,346 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:26:15,346 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:26:15,346 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:26:15,346 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (1/1) ... [2025-03-17 14:26:15,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:26:15,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:26:15,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 14:26:15,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 14:26:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:26:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 14:26:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 14:26:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 14:26:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 14:26:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 14:26:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 14:26:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:26:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:26:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:26:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:26:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:26:15,388 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:26:15,445 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:26:15,447 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:26:15,651 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:26:15,651 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:26:15,783 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:26:15,784 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:26:15,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:26:15 BoogieIcfgContainer [2025-03-17 14:26:15,784 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:26:15,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:26:15,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:26:15,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:26:15,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:26:15" (1/3) ... [2025-03-17 14:26:15,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d146576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:26:15, skipping insertion in model container [2025-03-17 14:26:15,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:26:15" (2/3) ... [2025-03-17 14:26:15,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d146576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:26:15, skipping insertion in model container [2025-03-17 14:26:15,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:26:15" (3/3) ... [2025-03-17 14:26:15,792 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-03-17 14:26:15,801 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:26:15,803 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-17 14:26:15,804 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:26:15,846 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 14:26:15,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 99 flow [2025-03-17 14:26:15,898 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2025-03-17 14:26:15,900 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 14:26:15,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 4/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-03-17 14:26:15,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 99 flow [2025-03-17 14:26:15,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 88 flow [2025-03-17 14:26:15,913 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:26:15,924 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;@7f1d0d2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:26:15,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-17 14:26:15,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:26:15,937 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2025-03-17 14:26:15,937 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 14:26:15,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:15,937 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] [2025-03-17 14:26:15,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:15,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 353954305, now seen corresponding path program 1 times [2025-03-17 14:26:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692093527] [2025-03-17 14:26:15,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:26:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:16,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 14:26:16,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 14:26:16,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:16,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:16,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692093527] [2025-03-17 14:26:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692093527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:26:16,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:26:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:26:16,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120367956] [2025-03-17 14:26:16,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:26:16,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:26:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:16,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:26:16,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:26:16,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:16,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:16,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:16,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:16,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:16,859 INFO L124 PetriNetUnfolderBase]: 2110/3012 cut-off events. [2025-03-17 14:26:16,859 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-03-17 14:26:16,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6230 conditions, 3012 events. 2110/3012 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13800 event pairs, 78 based on Foata normal form. 1/2587 useless extension candidates. Maximal degree in co-relation 6118. Up to 1069 conditions per place. [2025-03-17 14:26:16,877 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 80 selfloop transitions, 8 changer transitions 6/99 dead transitions. [2025-03-17 14:26:16,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 99 transitions, 419 flow [2025-03-17 14:26:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:26:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 14:26:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2025-03-17 14:26:16,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6452991452991453 [2025-03-17 14:26:16,890 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 88 flow. Second operand 6 states and 151 transitions. [2025-03-17 14:26:16,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 99 transitions, 419 flow [2025-03-17 14:26:16,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 14:26:16,899 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 122 flow [2025-03-17 14:26:16,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2025-03-17 14:26:16,906 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2025-03-17 14:26:16,907 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 122 flow [2025-03-17 14:26:16,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:16,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:16,907 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] [2025-03-17 14:26:16,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:26:16,908 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:16,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1927629202, now seen corresponding path program 1 times [2025-03-17 14:26:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-03-17 14:26:16,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:26:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:16,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:26:16,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:26:16,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:16,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:16,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-03-17 14:26:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561507911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:26:16,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:26:16,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:26:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794317043] [2025-03-17 14:26:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:26:16,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:26:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:16,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:26:16,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:26:16,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:16,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:16,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:16,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:16,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:17,207 INFO L124 PetriNetUnfolderBase]: 1991/2919 cut-off events. [2025-03-17 14:26:17,207 INFO L125 PetriNetUnfolderBase]: For 812/812 co-relation queries the response was YES. [2025-03-17 14:26:17,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 2919 events. 1991/2919 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12947 event pairs, 680 based on Foata normal form. 78/2564 useless extension candidates. Maximal degree in co-relation 5829. Up to 1656 conditions per place. [2025-03-17 14:26:17,221 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 55 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2025-03-17 14:26:17,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 306 flow [2025-03-17 14:26:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:26:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:26:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2025-03-17 14:26:17,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2025-03-17 14:26:17,223 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 122 flow. Second operand 3 states and 79 transitions. [2025-03-17 14:26:17,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 306 flow [2025-03-17 14:26:17,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:26:17,229 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 136 flow [2025-03-17 14:26:17,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-03-17 14:26:17,230 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2025-03-17 14:26:17,230 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 136 flow [2025-03-17 14:26:17,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:17,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:17,230 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] [2025-03-17 14:26:17,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:26:17,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:17,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1197960011, now seen corresponding path program 1 times [2025-03-17 14:26:17,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:17,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186085285] [2025-03-17 14:26:17,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:26:17,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:17,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:26:17,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:26:17,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:17,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:17,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186085285] [2025-03-17 14:26:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186085285] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:26:17,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:26:17,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:26:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277116467] [2025-03-17 14:26:17,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:26:17,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:26:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:17,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:26:17,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:26:17,299 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:17,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:17,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:17,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:17,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:17,530 INFO L124 PetriNetUnfolderBase]: 2882/4245 cut-off events. [2025-03-17 14:26:17,530 INFO L125 PetriNetUnfolderBase]: For 1576/1576 co-relation queries the response was YES. [2025-03-17 14:26:17,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10305 conditions, 4245 events. 2882/4245 cut-off events. For 1576/1576 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19768 event pairs, 1041 based on Foata normal form. 86/3646 useless extension candidates. Maximal degree in co-relation 9151. Up to 2663 conditions per place. [2025-03-17 14:26:17,547 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 55 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2025-03-17 14:26:17,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 328 flow [2025-03-17 14:26:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:26:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:26:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2025-03-17 14:26:17,548 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2025-03-17 14:26:17,549 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 136 flow. Second operand 3 states and 77 transitions. [2025-03-17 14:26:17,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 328 flow [2025-03-17 14:26:17,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:26:17,552 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 150 flow [2025-03-17 14:26:17,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2025-03-17 14:26:17,553 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2025-03-17 14:26:17,553 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 150 flow [2025-03-17 14:26:17,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:17,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:17,553 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:17,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:26:17,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:17,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash -15963655, now seen corresponding path program 1 times [2025-03-17 14:26:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:17,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816912304] [2025-03-17 14:26:17,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:26:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:17,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 14:26:17,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 14:26:17,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:17,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:26:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816912304] [2025-03-17 14:26:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816912304] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:26:17,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:26:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:26:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126301664] [2025-03-17 14:26:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:26:17,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:26:17,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:17,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:26:17,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:26:17,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:17,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:17,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:17,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:17,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:17,960 INFO L124 PetriNetUnfolderBase]: 2591/3811 cut-off events. [2025-03-17 14:26:17,960 INFO L125 PetriNetUnfolderBase]: For 1783/1783 co-relation queries the response was YES. [2025-03-17 14:26:17,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 3811 events. 2591/3811 cut-off events. For 1783/1783 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16828 event pairs, 175 based on Foata normal form. 0/3294 useless extension candidates. Maximal degree in co-relation 8423. Up to 1972 conditions per place. [2025-03-17 14:26:17,980 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 60 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2025-03-17 14:26:17,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 379 flow [2025-03-17 14:26:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:26:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:26:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-17 14:26:17,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-17 14:26:17,981 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 150 flow. Second operand 4 states and 91 transitions. [2025-03-17 14:26:17,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 379 flow [2025-03-17 14:26:17,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:26:17,985 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 175 flow [2025-03-17 14:26:17,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2025-03-17 14:26:17,986 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2025-03-17 14:26:17,986 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 175 flow [2025-03-17 14:26:17,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:17,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:17,986 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:17,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:26:17,987 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:17,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1230881597, now seen corresponding path program 2 times [2025-03-17 14:26:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:17,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857289499] [2025-03-17 14:26:17,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:26:17,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:17,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-17 14:26:18,005 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 29 statements. [2025-03-17 14:26:18,006 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:26:18,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:26:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857289499] [2025-03-17 14:26:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857289499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:26:18,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:26:18,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:26:18,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958656738] [2025-03-17 14:26:18,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:26:18,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:26:18,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:18,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:26:18,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:26:18,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:18,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 175 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) [2025-03-17 14:26:18,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:18,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:18,436 INFO L124 PetriNetUnfolderBase]: 3347/4901 cut-off events. [2025-03-17 14:26:18,437 INFO L125 PetriNetUnfolderBase]: For 2738/2738 co-relation queries the response was YES. [2025-03-17 14:26:18,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12630 conditions, 4901 events. 3347/4901 cut-off events. For 2738/2738 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23275 event pairs, 277 based on Foata normal form. 72/4407 useless extension candidates. Maximal degree in co-relation 11496. Up to 2034 conditions per place. [2025-03-17 14:26:18,463 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 77 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2025-03-17 14:26:18,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 491 flow [2025-03-17 14:26:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:26:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:26:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2025-03-17 14:26:18,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6051282051282051 [2025-03-17 14:26:18,464 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 175 flow. Second operand 5 states and 118 transitions. [2025-03-17 14:26:18,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 491 flow [2025-03-17 14:26:18,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:26:18,472 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 194 flow [2025-03-17 14:26:18,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-03-17 14:26:18,472 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2025-03-17 14:26:18,472 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 194 flow [2025-03-17 14:26:18,473 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) [2025-03-17 14:26:18,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:18,473 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:18,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:26:18,473 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:18,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 745398675, now seen corresponding path program 3 times [2025-03-17 14:26:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676633762] [2025-03-17 14:26:18,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:26:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:18,483 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 2 equivalence classes. [2025-03-17 14:26:18,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 29 statements. [2025-03-17 14:26:18,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 14:26:18,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:26:18,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:18,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676633762] [2025-03-17 14:26:18,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676633762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:26:18,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:26:18,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:26:18,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25856863] [2025-03-17 14:26:18,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:26:18,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:26:18,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:18,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:26:18,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:26:18,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:18,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:18,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:18,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:18,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:18,932 INFO L124 PetriNetUnfolderBase]: 4741/6921 cut-off events. [2025-03-17 14:26:18,933 INFO L125 PetriNetUnfolderBase]: For 4993/4993 co-relation queries the response was YES. [2025-03-17 14:26:18,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17982 conditions, 6921 events. 4741/6921 cut-off events. For 4993/4993 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 34256 event pairs, 965 based on Foata normal form. 134/6242 useless extension candidates. Maximal degree in co-relation 13973. Up to 2689 conditions per place. [2025-03-17 14:26:18,959 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 80 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2025-03-17 14:26:18,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 535 flow [2025-03-17 14:26:18,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:26:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:26:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-17 14:26:18,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-17 14:26:18,961 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 194 flow. Second operand 5 states and 117 transitions. [2025-03-17 14:26:18,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 535 flow [2025-03-17 14:26:18,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 521 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:26:18,969 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 204 flow [2025-03-17 14:26:18,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-03-17 14:26:18,970 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2025-03-17 14:26:18,970 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 204 flow [2025-03-17 14:26:18,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:18,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:18,970 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:18,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:26:18,970 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:18,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1821826685, now seen corresponding path program 4 times [2025-03-17 14:26:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231123716] [2025-03-17 14:26:18,971 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:26:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:18,976 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-17 14:26:18,982 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 14:26:18,982 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:26:18,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:19,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231123716] [2025-03-17 14:26:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231123716] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:26:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877562936] [2025-03-17 14:26:19,122 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:26:19,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:19,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:26:19,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:26:19,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 14:26:19,164 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-17 14:26:19,181 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 14:26:19,181 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:26:19,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:19,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 14:26:19,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:26:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:19,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:26:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877562936] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:26:19,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:26:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 14 [2025-03-17 14:26:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344709321] [2025-03-17 14:26:19,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:26:19,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 14:26:19,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:19,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 14:26:19,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-03-17 14:26:19,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:19,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 204 flow. Second operand has 15 states, 15 states have (on average 12.6) internal successors, (189), 15 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:19,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:19,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:19,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:21,387 INFO L124 PetriNetUnfolderBase]: 17298/25108 cut-off events. [2025-03-17 14:26:21,387 INFO L125 PetriNetUnfolderBase]: For 18550/18550 co-relation queries the response was YES. [2025-03-17 14:26:21,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65780 conditions, 25108 events. 17298/25108 cut-off events. For 18550/18550 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 149475 event pairs, 1102 based on Foata normal form. 664/22866 useless extension candidates. Maximal degree in co-relation 25752. Up to 5432 conditions per place. [2025-03-17 14:26:21,465 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 376 selfloop transitions, 107 changer transitions 37/525 dead transitions. [2025-03-17 14:26:21,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 525 transitions, 2943 flow [2025-03-17 14:26:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-17 14:26:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-03-17 14:26:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 816 transitions. [2025-03-17 14:26:21,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506072874493927 [2025-03-17 14:26:21,468 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 204 flow. Second operand 38 states and 816 transitions. [2025-03-17 14:26:21,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 525 transitions, 2943 flow [2025-03-17 14:26:21,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 525 transitions, 2905 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:26:21,478 INFO L231 Difference]: Finished difference. Result has 118 places, 157 transitions, 1309 flow [2025-03-17 14:26:21,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1309, PETRI_PLACES=118, PETRI_TRANSITIONS=157} [2025-03-17 14:26:21,478 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2025-03-17 14:26:21,479 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 157 transitions, 1309 flow [2025-03-17 14:26:21,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.6) internal successors, (189), 15 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:21,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:21,479 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:21,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 14:26:21,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:21,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:21,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2017704516, now seen corresponding path program 5 times [2025-03-17 14:26:21,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:21,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565973229] [2025-03-17 14:26:21,680 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:26:21,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:21,686 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:26:21,694 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:26:21,694 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:26:21,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:26:21,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565973229] [2025-03-17 14:26:21,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565973229] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:26:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533084619] [2025-03-17 14:26:21,745 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:26:21,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:26:21,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:26:21,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:26:21,785 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:26:21,802 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:26:21,802 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:26:21,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:21,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:26:21,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:26:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:21,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:26:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:26:21,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533084619] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:26:21,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:26:21,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-03-17 14:26:21,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417632757] [2025-03-17 14:26:21,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:26:21,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:26:21,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:21,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:26:21,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:26:21,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:21,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 157 transitions, 1309 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:21,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:21,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:21,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:23,998 INFO L124 PetriNetUnfolderBase]: 18022/26506 cut-off events. [2025-03-17 14:26:23,999 INFO L125 PetriNetUnfolderBase]: For 152623/152623 co-relation queries the response was YES. [2025-03-17 14:26:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109693 conditions, 26506 events. 18022/26506 cut-off events. For 152623/152623 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 159810 event pairs, 6993 based on Foata normal form. 270/23847 useless extension candidates. Maximal degree in co-relation 109153. Up to 11002 conditions per place. [2025-03-17 14:26:24,227 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 299 selfloop transitions, 40 changer transitions 1/345 dead transitions. [2025-03-17 14:26:24,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 345 transitions, 3514 flow [2025-03-17 14:26:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:26:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:26:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-03-17 14:26:24,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2025-03-17 14:26:24,228 INFO L175 Difference]: Start difference. First operand has 118 places, 157 transitions, 1309 flow. Second operand 4 states and 114 transitions. [2025-03-17 14:26:24,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 345 transitions, 3514 flow [2025-03-17 14:26:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 345 transitions, 3090 flow, removed 171 selfloop flow, removed 5 redundant places. [2025-03-17 14:26:24,639 INFO L231 Difference]: Finished difference. Result has 118 places, 189 transitions, 1627 flow [2025-03-17 14:26:24,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1627, PETRI_PLACES=118, PETRI_TRANSITIONS=189} [2025-03-17 14:26:24,640 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2025-03-17 14:26:24,640 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 189 transitions, 1627 flow [2025-03-17 14:26:24,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:24,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:24,640 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:24,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 14:26:24,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-17 14:26:24,841 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:24,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2067953921, now seen corresponding path program 1 times [2025-03-17 14:26:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:24,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182367783] [2025-03-17 14:26:24,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:26:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:24,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:26:24,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:26:24,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:24,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:26:24,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182367783] [2025-03-17 14:26:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182367783] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:26:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971398412] [2025-03-17 14:26:24,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:26:24,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:24,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:26:24,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:26:24,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:26:24,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:26:24,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:26:24,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:24,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:24,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:26:24,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:26:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:26:24,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:26:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:26:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971398412] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:26:24,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:26:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-03-17 14:26:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979226782] [2025-03-17 14:26:24,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:26:24,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:26:24,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:25,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:26:25,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:26:25,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:25,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 189 transitions, 1627 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:25,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:25,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:25,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:29,478 INFO L124 PetriNetUnfolderBase]: 38627/56875 cut-off events. [2025-03-17 14:26:29,479 INFO L125 PetriNetUnfolderBase]: For 334893/334893 co-relation queries the response was YES. [2025-03-17 14:26:29,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233547 conditions, 56875 events. 38627/56875 cut-off events. For 334893/334893 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 379216 event pairs, 16454 based on Foata normal form. 848/51466 useless extension candidates. Maximal degree in co-relation 229376. Up to 21334 conditions per place. [2025-03-17 14:26:30,048 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 389 selfloop transitions, 36 changer transitions 1/431 dead transitions. [2025-03-17 14:26:30,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 431 transitions, 4621 flow [2025-03-17 14:26:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:26:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:26:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-17 14:26:30,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7051282051282052 [2025-03-17 14:26:30,049 INFO L175 Difference]: Start difference. First operand has 118 places, 189 transitions, 1627 flow. Second operand 4 states and 110 transitions. [2025-03-17 14:26:30,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 431 transitions, 4621 flow [2025-03-17 14:26:30,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 431 transitions, 4479 flow, removed 71 selfloop flow, removed 0 redundant places. [2025-03-17 14:26:30,933 INFO L231 Difference]: Finished difference. Result has 123 places, 218 transitions, 2038 flow [2025-03-17 14:26:30,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2038, PETRI_PLACES=123, PETRI_TRANSITIONS=218} [2025-03-17 14:26:30,934 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2025-03-17 14:26:30,934 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 218 transitions, 2038 flow [2025-03-17 14:26:30,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:30,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:30,934 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:30,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 14:26:31,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:31,135 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:31,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:31,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1429154429, now seen corresponding path program 6 times [2025-03-17 14:26:31,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:31,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743953315] [2025-03-17 14:26:31,135 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:26:31,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:31,144 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 3 equivalence classes. [2025-03-17 14:26:31,164 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:26:31,164 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:26:31,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:26:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743953315] [2025-03-17 14:26:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743953315] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:26:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648299510] [2025-03-17 14:26:31,374 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:26:31,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:26:31,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:26:31,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 14:26:31,413 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 3 equivalence classes. [2025-03-17 14:26:31,432 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:26:31,432 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:26:31,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:31,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 14:26:31,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:26:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:26:31,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:26:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:26:31,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648299510] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:26:31,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:26:31,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 16 [2025-03-17 14:26:31,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890463678] [2025-03-17 14:26:31,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:26:31,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 14:26:31,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:31,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 14:26:31,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-03-17 14:26:31,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:31,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 218 transitions, 2038 flow. Second operand has 17 states, 17 states have (on average 12.529411764705882) internal successors, (213), 17 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:31,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:31,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:31,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:26:46,503 INFO L124 PetriNetUnfolderBase]: 100400/145815 cut-off events. [2025-03-17 14:26:46,503 INFO L125 PetriNetUnfolderBase]: For 990220/990220 co-relation queries the response was YES. [2025-03-17 14:26:47,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591121 conditions, 145815 events. 100400/145815 cut-off events. For 990220/990220 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 1032608 event pairs, 10200 based on Foata normal form. 5708/134743 useless extension candidates. Maximal degree in co-relation 582017. Up to 31398 conditions per place. [2025-03-17 14:26:48,209 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 519 selfloop transitions, 348 changer transitions 408/1280 dead transitions. [2025-03-17 14:26:48,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1280 transitions, 14077 flow [2025-03-17 14:26:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-17 14:26:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-03-17 14:26:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 963 transitions. [2025-03-17 14:26:48,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2025-03-17 14:26:48,211 INFO L175 Difference]: Start difference. First operand has 123 places, 218 transitions, 2038 flow. Second operand 44 states and 963 transitions. [2025-03-17 14:26:48,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1280 transitions, 14077 flow [2025-03-17 14:26:51,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1280 transitions, 13857 flow, removed 110 selfloop flow, removed 0 redundant places. [2025-03-17 14:26:51,277 INFO L231 Difference]: Finished difference. Result has 187 places, 417 transitions, 5727 flow [2025-03-17 14:26:51,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5727, PETRI_PLACES=187, PETRI_TRANSITIONS=417} [2025-03-17 14:26:51,278 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2025-03-17 14:26:51,278 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 417 transitions, 5727 flow [2025-03-17 14:26:51,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.529411764705882) internal successors, (213), 17 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:51,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:26:51,279 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:26:51,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 14:26:51,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:51,479 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 14:26:51,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:26:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1082300488, now seen corresponding path program 7 times [2025-03-17 14:26:51,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:26:51,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620561856] [2025-03-17 14:26:51,480 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:26:51,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:26:51,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-17 14:26:51,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 14:26:51,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:51,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:26:51,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:26:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620561856] [2025-03-17 14:26:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620561856] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:26:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990318395] [2025-03-17 14:26:51,553 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:26:51,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:26:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:26:51,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:26:51,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 14:26:51,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-17 14:26:51,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 14:26:51,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:26:51,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:26:51,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:26:51,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:26:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:26:51,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:26:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:26:51,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990318395] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:26:51,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:26:51,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2025-03-17 14:26:51,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249969362] [2025-03-17 14:26:51,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:26:51,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:26:51,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:26:51,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:26:51,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:26:51,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-17 14:26:51,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 417 transitions, 5727 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:26:51,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:26:51,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-17 14:26:51,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand