./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe024_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:10:00,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:10:00,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:10:00,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:10:00,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:10:00,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:10:00,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:10:00,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:10:00,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:10:00,696 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:10:00,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:10:00,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:10:00,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:10:00,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:10:00,697 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:10:00,698 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:10:00,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:10:00,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:10:00,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:10:00,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:10:00,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:10:00,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:10:00,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:10:00,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:10:00,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:10:00,700 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 -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2025-03-09 01:10:00,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:10:00,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:10:00,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:10:00,938 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:10:00,939 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:10:00,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2025-03-09 01:10:02,131 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe746458/5ce126111845428499ba4d9f753dc498/FLAG86aed37e5 [2025-03-09 01:10:02,410 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:10:02,411 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2025-03-09 01:10:02,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe746458/5ce126111845428499ba4d9f753dc498/FLAG86aed37e5 [2025-03-09 01:10:02,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe746458/5ce126111845428499ba4d9f753dc498 [2025-03-09 01:10:02,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:10:02,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:10:02,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:10:02,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:10:02,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:10:02,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:02,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eb79d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02, skipping insertion in model container [2025-03-09 01:10:02,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:02,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:10:02,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:10:02,916 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:10:02,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:10:02,992 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:10:02,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02 WrapperNode [2025-03-09 01:10:02,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:10:02,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:10:02,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:10:02,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:10:02,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,028 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2025-03-09 01:10:03,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:10:03,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:10:03,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:10:03,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:10:03,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,052 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 01:10:03,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:10:03,073 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:10:03,073 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:10:03,073 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:10:03,074 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (1/1) ... [2025-03-09 01:10:03,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:10:03,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:10:03,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 01:10:03,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-09 01:10:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-09 01:10:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-09 01:10:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 01:10:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:10:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:10:03,138 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:10:03,251 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:10:03,253 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:10:03,394 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:10:03,395 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:10:03,472 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:10:03,473 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:10:03,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:10:03 BoogieIcfgContainer [2025-03-09 01:10:03,473 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:10:03,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:10:03,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:10:03,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:10:03,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:10:02" (1/3) ... [2025-03-09 01:10:03,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bce886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:10:03, skipping insertion in model container [2025-03-09 01:10:03,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:10:02" (2/3) ... [2025-03-09 01:10:03,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bce886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:10:03, skipping insertion in model container [2025-03-09 01:10:03,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:10:03" (3/3) ... [2025-03-09 01:10:03,481 INFO L128 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2025-03-09 01:10:03,492 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:10:03,495 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe024_tso.i that has 4 procedures, 43 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-09 01:10:03,495 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:10:03,535 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 01:10:03,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 44 transitions, 100 flow [2025-03-09 01:10:03,584 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2025-03-09 01:10:03,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:10:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 2/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-03-09 01:10:03,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 44 transitions, 100 flow [2025-03-09 01:10:03,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 40 transitions, 89 flow [2025-03-09 01:10:03,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:10:03,613 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;@4f3dee59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:10:03,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-09 01:10:03,625 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:10:03,626 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2025-03-09 01:10:03,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:10:03,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:03,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:03,627 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:03,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:03,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1076848307, now seen corresponding path program 1 times [2025-03-09 01:10:03,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:03,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120345492] [2025-03-09 01:10:03,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:03,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:03,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:10:03,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:10:03,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:03,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120345492] [2025-03-09 01:10:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120345492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:03,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:03,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:10:03,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018324244] [2025-03-09 01:10:03,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:03,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:10:03,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:03,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:10:03,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:10:03,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2025-03-09 01:10:03,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:03,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:03,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2025-03-09 01:10:03,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:04,495 INFO L124 PetriNetUnfolderBase]: 5627/8717 cut-off events. [2025-03-09 01:10:04,496 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-09 01:10:04,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16816 conditions, 8717 events. 5627/8717 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 51992 event pairs, 5627 based on Foata normal form. 756/9420 useless extension candidates. Maximal degree in co-relation 16805. Up to 7994 conditions per place. [2025-03-09 01:10:04,546 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 28 selfloop transitions, 1 changer transitions 1/36 dead transitions. [2025-03-09 01:10:04,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 141 flow [2025-03-09 01:10:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:10:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:10:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-03-09 01:10:04,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-03-09 01:10:04,558 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 89 flow. Second operand 3 states and 60 transitions. [2025-03-09 01:10:04,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 141 flow [2025-03-09 01:10:04,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:10:04,564 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 78 flow [2025-03-09 01:10:04,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2025-03-09 01:10:04,571 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2025-03-09 01:10:04,571 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 78 flow [2025-03-09 01:10:04,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:04,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:04,571 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:04,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:10:04,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:04,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1076847755, now seen corresponding path program 1 times [2025-03-09 01:10:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:04,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057027266] [2025-03-09 01:10:04,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:04,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:10:04,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:10:04,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:04,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057027266] [2025-03-09 01:10:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057027266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:04,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:10:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510377359] [2025-03-09 01:10:04,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:04,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:10:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:04,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:10:04,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:10:04,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2025-03-09 01:10:04,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:04,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:04,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2025-03-09 01:10:04,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:05,684 INFO L124 PetriNetUnfolderBase]: 7097/10625 cut-off events. [2025-03-09 01:10:05,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:10:05,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20877 conditions, 10625 events. 7097/10625 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 62021 event pairs, 1814 based on Foata normal form. 0/10382 useless extension candidates. Maximal degree in co-relation 20871. Up to 6591 conditions per place. [2025-03-09 01:10:05,734 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 43 selfloop transitions, 3 changer transitions 72/123 dead transitions. [2025-03-09 01:10:05,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 123 transitions, 494 flow [2025-03-09 01:10:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:10:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:10:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2025-03-09 01:10:05,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-03-09 01:10:05,736 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 78 flow. Second operand 8 states and 192 transitions. [2025-03-09 01:10:05,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 123 transitions, 494 flow [2025-03-09 01:10:05,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 123 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:10:05,740 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 110 flow [2025-03-09 01:10:05,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2025-03-09 01:10:05,741 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2025-03-09 01:10:05,741 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 110 flow [2025-03-09 01:10:05,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:05,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:05,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:05,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:10:05,741 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:05,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1463237620, now seen corresponding path program 1 times [2025-03-09 01:10:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791539044] [2025-03-09 01:10:05,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:05,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 01:10:05,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:10:05,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:05,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791539044] [2025-03-09 01:10:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791539044] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:05,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:05,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:10:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839109674] [2025-03-09 01:10:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:05,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:10:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:05,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:10:05,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:10:05,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2025-03-09 01:10:05,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:05,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:05,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2025-03-09 01:10:05,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:06,806 INFO L124 PetriNetUnfolderBase]: 6363/9399 cut-off events. [2025-03-09 01:10:06,807 INFO L125 PetriNetUnfolderBase]: For 4662/4668 co-relation queries the response was YES. [2025-03-09 01:10:06,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22167 conditions, 9399 events. 6363/9399 cut-off events. For 4662/4668 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 53320 event pairs, 753 based on Foata normal form. 238/9628 useless extension candidates. Maximal degree in co-relation 22155. Up to 4781 conditions per place. [2025-03-09 01:10:06,852 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 79 selfloop transitions, 11 changer transitions 94/189 dead transitions. [2025-03-09 01:10:06,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 189 transitions, 916 flow [2025-03-09 01:10:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 01:10:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 01:10:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 303 transitions. [2025-03-09 01:10:06,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5297202797202797 [2025-03-09 01:10:06,855 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 110 flow. Second operand 13 states and 303 transitions. [2025-03-09 01:10:06,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 189 transitions, 916 flow [2025-03-09 01:10:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 189 transitions, 887 flow, removed 12 selfloop flow, removed 3 redundant places. [2025-03-09 01:10:06,905 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 227 flow [2025-03-09 01:10:06,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=227, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2025-03-09 01:10:06,906 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 21 predicate places. [2025-03-09 01:10:06,906 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 227 flow [2025-03-09 01:10:06,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:06,906 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:06,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:06,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:10:06,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:06,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1125737005, now seen corresponding path program 1 times [2025-03-09 01:10:06,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:06,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355205325] [2025-03-09 01:10:06,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:06,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:06,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:10:06,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:10:06,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:06,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:07,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355205325] [2025-03-09 01:10:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355205325] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:07,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:10:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448999253] [2025-03-09 01:10:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:07,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:10:07,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:07,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:10:07,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:10:07,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2025-03-09 01:10:07,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:07,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:07,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2025-03-09 01:10:07,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:08,000 INFO L124 PetriNetUnfolderBase]: 7381/10909 cut-off events. [2025-03-09 01:10:08,001 INFO L125 PetriNetUnfolderBase]: For 31115/31127 co-relation queries the response was YES. [2025-03-09 01:10:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33627 conditions, 10909 events. 7381/10909 cut-off events. For 31115/31127 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 60975 event pairs, 1705 based on Foata normal form. 322/11222 useless extension candidates. Maximal degree in co-relation 33605. Up to 3817 conditions per place. [2025-03-09 01:10:08,060 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 51 selfloop transitions, 5 changer transitions 101/162 dead transitions. [2025-03-09 01:10:08,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 162 transitions, 1089 flow [2025-03-09 01:10:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:10:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:10:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2025-03-09 01:10:08,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2025-03-09 01:10:08,062 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 227 flow. Second operand 10 states and 235 transitions. [2025-03-09 01:10:08,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 162 transitions, 1089 flow [2025-03-09 01:10:08,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 162 transitions, 969 flow, removed 55 selfloop flow, removed 7 redundant places. [2025-03-09 01:10:08,155 INFO L231 Difference]: Finished difference. Result has 71 places, 38 transitions, 182 flow [2025-03-09 01:10:08,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=71, PETRI_TRANSITIONS=38} [2025-03-09 01:10:08,156 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 23 predicate places. [2025-03-09 01:10:08,156 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 38 transitions, 182 flow [2025-03-09 01:10:08,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:08,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:08,156 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] [2025-03-09 01:10:08,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:10:08,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:08,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1502191128, now seen corresponding path program 1 times [2025-03-09 01:10:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:08,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992250091] [2025-03-09 01:10:08,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:08,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:08,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:10:08,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:10:08,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:08,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:08,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:08,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992250091] [2025-03-09 01:10:08,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992250091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:08,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:08,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:10:08,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006579116] [2025-03-09 01:10:08,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:08,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:10:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:08,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:10:08,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:10:08,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-09 01:10:08,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 38 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:08,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:08,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-09 01:10:08,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:08,596 INFO L124 PetriNetUnfolderBase]: 2778/4378 cut-off events. [2025-03-09 01:10:08,596 INFO L125 PetriNetUnfolderBase]: For 9487/9487 co-relation queries the response was YES. [2025-03-09 01:10:08,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12938 conditions, 4378 events. 2778/4378 cut-off events. For 9487/9487 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 23180 event pairs, 399 based on Foata normal form. 182/4557 useless extension candidates. Maximal degree in co-relation 12913. Up to 2356 conditions per place. [2025-03-09 01:10:08,619 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 5 changer transitions 1/77 dead transitions. [2025-03-09 01:10:08,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 504 flow [2025-03-09 01:10:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:10:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:10:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-03-09 01:10:08,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2025-03-09 01:10:08,620 INFO L175 Difference]: Start difference. First operand has 71 places, 38 transitions, 182 flow. Second operand 4 states and 106 transitions. [2025-03-09 01:10:08,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 504 flow [2025-03-09 01:10:08,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 448 flow, removed 16 selfloop flow, removed 11 redundant places. [2025-03-09 01:10:08,633 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 184 flow [2025-03-09 01:10:08,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2025-03-09 01:10:08,634 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2025-03-09 01:10:08,634 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 184 flow [2025-03-09 01:10:08,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:08,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:08,634 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:08,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:10:08,634 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:08,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash -289527181, now seen corresponding path program 1 times [2025-03-09 01:10:08,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:08,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476492036] [2025-03-09 01:10:08,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:08,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:08,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 01:10:08,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:10:08,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:08,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476492036] [2025-03-09 01:10:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476492036] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:08,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:08,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:10:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634534400] [2025-03-09 01:10:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:08,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:10:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:08,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:10:08,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:10:08,711 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-09 01:10:08,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:08,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:08,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-09 01:10:08,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:08,919 INFO L124 PetriNetUnfolderBase]: 1665/2665 cut-off events. [2025-03-09 01:10:08,919 INFO L125 PetriNetUnfolderBase]: For 3686/3686 co-relation queries the response was YES. [2025-03-09 01:10:08,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7753 conditions, 2665 events. 1665/2665 cut-off events. For 3686/3686 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12564 event pairs, 253 based on Foata normal form. 132/2794 useless extension candidates. Maximal degree in co-relation 7735. Up to 877 conditions per place. [2025-03-09 01:10:08,931 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 76 selfloop transitions, 8 changer transitions 1/90 dead transitions. [2025-03-09 01:10:08,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 557 flow [2025-03-09 01:10:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:10:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:10:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-03-09 01:10:08,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2025-03-09 01:10:08,932 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 184 flow. Second operand 5 states and 131 transitions. [2025-03-09 01:10:08,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 557 flow [2025-03-09 01:10:08,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 531 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-03-09 01:10:08,937 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 215 flow [2025-03-09 01:10:08,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2025-03-09 01:10:08,937 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-03-09 01:10:08,937 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 215 flow [2025-03-09 01:10:08,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:08,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:08,938 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] [2025-03-09 01:10:08,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:10:08,938 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:08,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1036913949, now seen corresponding path program 1 times [2025-03-09 01:10:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:08,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272200172] [2025-03-09 01:10:08,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:08,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 01:10:08,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:10:08,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:08,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:09,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:09,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272200172] [2025-03-09 01:10:09,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272200172] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:09,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:09,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:10:09,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807010123] [2025-03-09 01:10:09,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:09,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:10:09,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:09,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:10:09,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:10:09,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2025-03-09 01:10:09,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:09,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:09,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2025-03-09 01:10:09,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:09,207 INFO L124 PetriNetUnfolderBase]: 1009/1597 cut-off events. [2025-03-09 01:10:09,207 INFO L125 PetriNetUnfolderBase]: For 2428/2428 co-relation queries the response was YES. [2025-03-09 01:10:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4839 conditions, 1597 events. 1009/1597 cut-off events. For 2428/2428 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6675 event pairs, 223 based on Foata normal form. 52/1646 useless extension candidates. Maximal degree in co-relation 4821. Up to 572 conditions per place. [2025-03-09 01:10:09,214 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 11 changer transitions 1/83 dead transitions. [2025-03-09 01:10:09,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 514 flow [2025-03-09 01:10:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:10:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:10:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2025-03-09 01:10:09,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2025-03-09 01:10:09,216 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 215 flow. Second operand 6 states and 134 transitions. [2025-03-09 01:10:09,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 514 flow [2025-03-09 01:10:09,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 469 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-09 01:10:09,221 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 213 flow [2025-03-09 01:10:09,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-03-09 01:10:09,222 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2025-03-09 01:10:09,222 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 213 flow [2025-03-09 01:10:09,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:09,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:09,223 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:09,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 01:10:09,223 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:09,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1797764862, now seen corresponding path program 1 times [2025-03-09 01:10:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498650622] [2025-03-09 01:10:09,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:10:09,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:09,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 01:10:09,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 01:10:09,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:10:09,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:09,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498650622] [2025-03-09 01:10:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498650622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:09,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:09,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:10:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348479640] [2025-03-09 01:10:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:09,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:10:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:09,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:10:09,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:10:09,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2025-03-09 01:10:09,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:09,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:09,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2025-03-09 01:10:09,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:09,624 INFO L124 PetriNetUnfolderBase]: 1401/2214 cut-off events. [2025-03-09 01:10:09,624 INFO L125 PetriNetUnfolderBase]: For 2982/2982 co-relation queries the response was YES. [2025-03-09 01:10:09,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 2214 events. 1401/2214 cut-off events. For 2982/2982 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9830 event pairs, 202 based on Foata normal form. 8/2219 useless extension candidates. Maximal degree in co-relation 6586. Up to 1150 conditions per place. [2025-03-09 01:10:09,634 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 43 selfloop transitions, 3 changer transitions 48/99 dead transitions. [2025-03-09 01:10:09,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 622 flow [2025-03-09 01:10:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:10:09,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:10:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2025-03-09 01:10:09,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-03-09 01:10:09,636 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 213 flow. Second operand 8 states and 154 transitions. [2025-03-09 01:10:09,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 622 flow [2025-03-09 01:10:09,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 99 transitions, 493 flow, removed 26 selfloop flow, removed 10 redundant places. [2025-03-09 01:10:09,646 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 135 flow [2025-03-09 01:10:09,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2025-03-09 01:10:09,647 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2025-03-09 01:10:09,647 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 135 flow [2025-03-09 01:10:09,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:09,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:10:09,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:09,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 01:10:09,647 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:10:09,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:10:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1724843448, now seen corresponding path program 2 times [2025-03-09 01:10:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:10:09,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117610251] [2025-03-09 01:10:09,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:10:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:10:09,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-09 01:10:09,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 01:10:09,665 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:10:09,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:10:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:10:09,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:10:09,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117610251] [2025-03-09 01:10:09,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117610251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:10:09,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:10:09,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:10:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860231466] [2025-03-09 01:10:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:10:09,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:10:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:10:09,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:10:09,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:10:09,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2025-03-09 01:10:09,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:09,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:10:09,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2025-03-09 01:10:09,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:10:09,894 INFO L124 PetriNetUnfolderBase]: 530/856 cut-off events. [2025-03-09 01:10:09,895 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2025-03-09 01:10:09,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2114 conditions, 856 events. 530/856 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2913 event pairs, 108 based on Foata normal form. 8/863 useless extension candidates. Maximal degree in co-relation 2105. Up to 444 conditions per place. [2025-03-09 01:10:09,897 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2025-03-09 01:10:09,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 287 flow [2025-03-09 01:10:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:10:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:10:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2025-03-09 01:10:09,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2025-03-09 01:10:09,898 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 135 flow. Second operand 6 states and 101 transitions. [2025-03-09 01:10:09,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 287 flow [2025-03-09 01:10:09,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 267 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-03-09 01:10:09,900 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2025-03-09 01:10:09,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2025-03-09 01:10:09,900 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2025-03-09 01:10:09,900 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2025-03-09 01:10:09,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:10:09,903 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-03-09 01:10:09,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-09 01:10:09,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-09 01:10:09,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-09 01:10:09,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-09 01:10:09,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 01:10:09,904 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:10:09,907 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 01:10:09,907 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 01:10:09,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 01:10:09 BasicIcfg [2025-03-09 01:10:09,911 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 01:10:09,911 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 01:10:09,911 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 01:10:09,911 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 01:10:09,912 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:10:03" (3/4) ... [2025-03-09 01:10:09,914 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 01:10:09,919 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-09 01:10:09,920 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-09 01:10:09,920 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-09 01:10:09,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-03-09 01:10:09,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-09 01:10:09,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-09 01:10:09,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 01:10:09,977 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 01:10:09,977 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 01:10:09,977 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 01:10:09,978 INFO L158 Benchmark]: Toolchain (without parser) took 7300.18ms. Allocated memory was 142.6MB in the beginning and 553.6MB in the end (delta: 411.0MB). Free memory was 104.5MB in the beginning and 241.4MB in the end (delta: -136.9MB). Peak memory consumption was 271.0MB. Max. memory is 16.1GB. [2025-03-09 01:10:09,978 INFO L158 Benchmark]: CDTParser took 1.81ms. Allocated memory is still 201.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:10:09,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.36ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 84.5MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:10:09,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.43ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:10:09,981 INFO L158 Benchmark]: Boogie Preprocessor took 42.35ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:10:09,981 INFO L158 Benchmark]: IcfgBuilder took 400.45ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 61.3MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:10:09,982 INFO L158 Benchmark]: TraceAbstraction took 6435.48ms. Allocated memory was 142.6MB in the beginning and 553.6MB in the end (delta: 411.0MB). Free memory was 60.3MB in the beginning and 245.5MB in the end (delta: -185.2MB). Peak memory consumption was 229.0MB. Max. memory is 16.1GB. [2025-03-09 01:10:09,982 INFO L158 Benchmark]: Witness Printer took 66.24ms. Allocated memory is still 553.6MB. Free memory was 245.5MB in the beginning and 241.4MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:10:09,983 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.81ms. Allocated memory is still 201.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.36ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 84.5MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.43ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.35ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 400.45ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 61.3MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6435.48ms. Allocated memory was 142.6MB in the beginning and 553.6MB in the end (delta: 411.0MB). Free memory was 60.3MB in the beginning and 245.5MB in the end (delta: -185.2MB). Peak memory consumption was 229.0MB. Max. memory is 16.1GB. * Witness Printer took 66.24ms. Allocated memory is still 553.6MB. Free memory was 245.5MB in the beginning and 241.4MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 780]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 68 locations, 66 edges, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 761 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 759 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1388 IncrementalHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1 mSDtfsCounter, 1388 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred in iteration=3, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 737 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 01:10:10,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE