./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c --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/weaver/popl20-threaded-sum-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:29:19,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:29:19,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:29:19,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:29:19,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:29:19,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:29:19,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:29:19,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:29:19,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:29:19,806 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:29:19,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:29:19,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:29:19,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:29:19,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:29:19,807 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:29:19,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:29:19,808 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:29:19,809 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:29:19,809 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:29:19,809 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:29:19,809 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:29:19,809 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:29:19,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:29:19,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:29:19,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:29:19,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:29:19,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:29:19,810 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 -> 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 [2025-03-09 01:29:20,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:29:20,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:29:20,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:29:20,039 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:29:20,039 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:29:20,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2025-03-09 01:29:21,188 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e036f532/7a4899bf946247b1a1399e8037c5e717/FLAG22fdf1bfa [2025-03-09 01:29:21,431 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:29:21,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2025-03-09 01:29:21,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e036f532/7a4899bf946247b1a1399e8037c5e717/FLAG22fdf1bfa [2025-03-09 01:29:21,448 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e036f532/7a4899bf946247b1a1399e8037c5e717 [2025-03-09 01:29:21,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:29:21,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:29:21,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:29:21,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:29:21,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:29:21,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a3954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21, skipping insertion in model container [2025-03-09 01:29:21,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:29:21,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:29:21,592 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:29:21,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:29:21,625 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:29:21,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21 WrapperNode [2025-03-09 01:29:21,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:29:21,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:29:21,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:29:21,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:29:21,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,645 INFO L138 Inliner]: procedures = 21, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2025-03-09 01:29:21,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:29:21,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:29:21,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:29:21,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:29:21,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,664 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 01:29:21,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,667 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:29:21,671 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:29:21,671 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:29:21,671 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:29:21,673 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (1/1) ... [2025-03-09 01:29:21,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:29:21,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:29:21,695 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 01:29:21,697 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 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:29:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:29:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 01:29:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 01:29:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:29:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:29:21,714 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 01:29:21,777 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:29:21,779 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:29:21,950 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:29:21,950 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:29:22,081 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:29:22,082 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:29:22,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:29:22 BoogieIcfgContainer [2025-03-09 01:29:22,082 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:29:22,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:29:22,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:29:22,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:29:22,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:29:21" (1/3) ... [2025-03-09 01:29:22,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edf0746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:29:22, skipping insertion in model container [2025-03-09 01:29:22,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:29:21" (2/3) ... [2025-03-09 01:29:22,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edf0746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:29:22, skipping insertion in model container [2025-03-09 01:29:22,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:29:22" (3/3) ... [2025-03-09 01:29:22,094 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2025-03-09 01:29:22,104 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:29:22,105 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-threaded-sum-3.wvr.c that has 4 procedures, 35 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-03-09 01:29:22,105 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:29:22,156 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 01:29:22,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 37 transitions, 95 flow [2025-03-09 01:29:22,221 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2025-03-09 01:29:22,224 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 01:29:22,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 3/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2025-03-09 01:29:22,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 37 transitions, 95 flow [2025-03-09 01:29:22,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 84 flow [2025-03-09 01:29:22,240 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:29:22,253 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;@5139fbbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:29:22,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-09 01:29:22,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:29:22,265 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2025-03-09 01:29:22,265 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 01:29:22,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:22,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:29:22,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:22,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1637151758, now seen corresponding path program 1 times [2025-03-09 01:29:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:22,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140259022] [2025-03-09 01:29:22,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:29:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:22,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 01:29:22,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:29:22,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:29:22,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:22,936 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 01:29:22,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140259022] [2025-03-09 01:29:22,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140259022] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:22,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:22,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:29:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366549625] [2025-03-09 01:29:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:22,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:29:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:22,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:29:22,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:29:22,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:22,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:22,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:22,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:22,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:23,216 INFO L124 PetriNetUnfolderBase]: 644/1018 cut-off events. [2025-03-09 01:29:23,216 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2025-03-09 01:29:23,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 1018 events. 644/1018 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4537 event pairs, 47 based on Foata normal form. 36/1048 useless extension candidates. Maximal degree in co-relation 1805. Up to 727 conditions per place. [2025-03-09 01:29:23,227 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 43 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2025-03-09 01:29:23,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 236 flow [2025-03-09 01:29:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:29:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:29:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-03-09 01:29:23,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6351351351351351 [2025-03-09 01:29:23,240 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 84 flow. Second operand 4 states and 94 transitions. [2025-03-09 01:29:23,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 236 flow [2025-03-09 01:29:23,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 216 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-09 01:29:23,249 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 100 flow [2025-03-09 01:29:23,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2025-03-09 01:29:23,255 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2025-03-09 01:29:23,255 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 100 flow [2025-03-09 01:29:23,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:23,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:23,256 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] [2025-03-09 01:29:23,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:29:23,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:23,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1856448966, now seen corresponding path program 1 times [2025-03-09 01:29:23,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:23,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909732524] [2025-03-09 01:29:23,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:29:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:23,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:29:23,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:29:23,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:29:23,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:29:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909732524] [2025-03-09 01:29:23,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909732524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:23,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:23,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:29:23,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794686118] [2025-03-09 01:29:23,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:23,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:29:23,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:23,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:29:23,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:29:23,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:29:23,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 01:29:23,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:23,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:29:23,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:23,957 INFO L124 PetriNetUnfolderBase]: 1225/1894 cut-off events. [2025-03-09 01:29:23,957 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2025-03-09 01:29:23,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4249 conditions, 1894 events. 1225/1894 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9358 event pairs, 384 based on Foata normal form. 28/1913 useless extension candidates. Maximal degree in co-relation 2782. Up to 1047 conditions per place. [2025-03-09 01:29:23,972 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 67 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2025-03-09 01:29:23,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 93 transitions, 450 flow [2025-03-09 01:29:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:29:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:29:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-03-09 01:29:23,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2025-03-09 01:29:23,973 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 100 flow. Second operand 5 states and 125 transitions. [2025-03-09 01:29:23,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 93 transitions, 450 flow [2025-03-09 01:29:23,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 93 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:29:23,975 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 256 flow [2025-03-09 01:29:23,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2025-03-09 01:29:23,976 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2025-03-09 01:29:23,976 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 256 flow [2025-03-09 01:29:23,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 01:29:23,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:23,976 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] [2025-03-09 01:29:23,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:29:23,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:23,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1694399414, now seen corresponding path program 2 times [2025-03-09 01:29:23,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:23,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456404391] [2025-03-09 01:29:23,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:29:23,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:23,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:29:24,009 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:29:24,009 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:29:24,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:24,189 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 01:29:24,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:24,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456404391] [2025-03-09 01:29:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456404391] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:24,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:29:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816912304] [2025-03-09 01:29:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:24,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:29:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:24,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:29:24,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:29:24,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:24,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:24,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:24,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:24,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:24,407 INFO L124 PetriNetUnfolderBase]: 1161/1882 cut-off events. [2025-03-09 01:29:24,408 INFO L125 PetriNetUnfolderBase]: For 2073/2084 co-relation queries the response was YES. [2025-03-09 01:29:24,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5568 conditions, 1882 events. 1161/1882 cut-off events. For 2073/2084 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9772 event pairs, 212 based on Foata normal form. 72/1948 useless extension candidates. Maximal degree in co-relation 2573. Up to 916 conditions per place. [2025-03-09 01:29:24,423 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 82 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2025-03-09 01:29:24,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 95 transitions, 653 flow [2025-03-09 01:29:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:29:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:29:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-03-09 01:29:24,427 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6283783783783784 [2025-03-09 01:29:24,428 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 256 flow. Second operand 4 states and 93 transitions. [2025-03-09 01:29:24,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 95 transitions, 653 flow [2025-03-09 01:29:24,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 95 transitions, 653 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:29:24,433 INFO L231 Difference]: Finished difference. Result has 48 places, 57 transitions, 302 flow [2025-03-09 01:29:24,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=48, PETRI_TRANSITIONS=57} [2025-03-09 01:29:24,434 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2025-03-09 01:29:24,434 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 57 transitions, 302 flow [2025-03-09 01:29:24,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:24,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:24,435 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 01:29:24,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:29:24,435 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:24,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2023088901, now seen corresponding path program 1 times [2025-03-09 01:29:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370203438] [2025-03-09 01:29:24,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:29:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:24,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 01:29:24,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:29:24,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:29:24,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:24,626 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 01:29:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370203438] [2025-03-09 01:29:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370203438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:24,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:29:24,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103104972] [2025-03-09 01:29:24,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:24,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:29:24,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:24,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:29:24,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:29:24,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:24,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:24,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:24,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:24,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:24,861 INFO L124 PetriNetUnfolderBase]: 1505/2361 cut-off events. [2025-03-09 01:29:24,862 INFO L125 PetriNetUnfolderBase]: For 2764/2764 co-relation queries the response was YES. [2025-03-09 01:29:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7504 conditions, 2361 events. 1505/2361 cut-off events. For 2764/2764 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12537 event pairs, 269 based on Foata normal form. 72/2429 useless extension candidates. Maximal degree in co-relation 5518. Up to 1740 conditions per place. [2025-03-09 01:29:24,877 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 83 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2025-03-09 01:29:24,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 100 transitions, 693 flow [2025-03-09 01:29:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:29:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:29:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-09 01:29:24,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2025-03-09 01:29:24,880 INFO L175 Difference]: Start difference. First operand has 48 places, 57 transitions, 302 flow. Second operand 5 states and 117 transitions. [2025-03-09 01:29:24,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 100 transitions, 693 flow [2025-03-09 01:29:24,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 100 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:29:24,886 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 412 flow [2025-03-09 01:29:24,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2025-03-09 01:29:24,887 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2025-03-09 01:29:24,887 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 412 flow [2025-03-09 01:29:24,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:24,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:24,887 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 01:29:24,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:29:24,887 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:24,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1287327415, now seen corresponding path program 2 times [2025-03-09 01:29:24,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:24,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001638856] [2025-03-09 01:29:24,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:29:24,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:24,896 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 1 equivalence classes. [2025-03-09 01:29:24,909 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:29:24,909 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:29:24,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:25,084 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 01:29:25,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:25,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001638856] [2025-03-09 01:29:25,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001638856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:25,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:25,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:29:25,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026448618] [2025-03-09 01:29:25,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:25,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:29:25,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:25,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:29:25,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:29:25,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:25,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 01:29:25,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:25,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:25,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:25,359 INFO L124 PetriNetUnfolderBase]: 2065/3236 cut-off events. [2025-03-09 01:29:25,359 INFO L125 PetriNetUnfolderBase]: For 5123/5126 co-relation queries the response was YES. [2025-03-09 01:29:25,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10901 conditions, 3236 events. 2065/3236 cut-off events. For 5123/5126 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 18509 event pairs, 415 based on Foata normal form. 90/3321 useless extension candidates. Maximal degree in co-relation 6410. Up to 2057 conditions per place. [2025-03-09 01:29:25,380 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 86 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2025-03-09 01:29:25,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 113 transitions, 880 flow [2025-03-09 01:29:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:29:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:29:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-09 01:29:25,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2025-03-09 01:29:25,382 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 412 flow. Second operand 5 states and 117 transitions. [2025-03-09 01:29:25,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 113 transitions, 880 flow [2025-03-09 01:29:25,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 113 transitions, 866 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-09 01:29:25,387 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 469 flow [2025-03-09 01:29:25,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2025-03-09 01:29:25,388 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2025-03-09 01:29:25,388 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 469 flow [2025-03-09 01:29:25,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 01:29:25,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:25,388 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 01:29:25,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:29:25,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:25,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1328780691, now seen corresponding path program 3 times [2025-03-09 01:29:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930390953] [2025-03-09 01:29:25,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:29:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:25,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 1 equivalence classes. [2025-03-09 01:29:25,403 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:29:25,403 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 01:29:25,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:25,517 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 01:29:25,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:25,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930390953] [2025-03-09 01:29:25,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930390953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:25,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:25,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:29:25,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671508405] [2025-03-09 01:29:25,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:25,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:29:25,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:25,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:29:25,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:29:25,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:25,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 01:29:25,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:25,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:25,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:25,835 INFO L124 PetriNetUnfolderBase]: 2595/3993 cut-off events. [2025-03-09 01:29:25,835 INFO L125 PetriNetUnfolderBase]: For 6947/6959 co-relation queries the response was YES. [2025-03-09 01:29:25,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14089 conditions, 3993 events. 2595/3993 cut-off events. For 6947/6959 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 22459 event pairs, 302 based on Foata normal form. 124/4113 useless extension candidates. Maximal degree in co-relation 7114. Up to 2384 conditions per place. [2025-03-09 01:29:25,865 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 107 selfloop transitions, 13 changer transitions 0/127 dead transitions. [2025-03-09 01:29:25,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 127 transitions, 1018 flow [2025-03-09 01:29:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:29:25,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:29:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-03-09 01:29:25,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2025-03-09 01:29:25,867 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 469 flow. Second operand 5 states and 125 transitions. [2025-03-09 01:29:25,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 127 transitions, 1018 flow [2025-03-09 01:29:25,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 127 transitions, 979 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:29:25,881 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 552 flow [2025-03-09 01:29:25,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2025-03-09 01:29:25,883 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2025-03-09 01:29:25,883 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 552 flow [2025-03-09 01:29:25,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 01:29:25,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:25,884 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] [2025-03-09 01:29:25,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:29:25,884 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:25,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1955491661, now seen corresponding path program 1 times [2025-03-09 01:29:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508190294] [2025-03-09 01:29:25,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:29:25,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:25,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:25,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:25,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:29:25,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:26,056 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 01:29:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508190294] [2025-03-09 01:29:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508190294] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:29:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612561706] [2025-03-09 01:29:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:26,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:29:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:26,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:29:26,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:29:26,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:29:26,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 552 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:26,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:29:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:26,624 INFO L124 PetriNetUnfolderBase]: 3856/5716 cut-off events. [2025-03-09 01:29:26,625 INFO L125 PetriNetUnfolderBase]: For 20382/20382 co-relation queries the response was YES. [2025-03-09 01:29:26,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23101 conditions, 5716 events. 3856/5716 cut-off events. For 20382/20382 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 32023 event pairs, 75 based on Foata normal form. 328/6042 useless extension candidates. Maximal degree in co-relation 11156. Up to 1626 conditions per place. [2025-03-09 01:29:26,664 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 216 selfloop transitions, 44 changer transitions 0/266 dead transitions. [2025-03-09 01:29:26,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 266 transitions, 2621 flow [2025-03-09 01:29:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:29:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:29:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2025-03-09 01:29:26,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5702702702702702 [2025-03-09 01:29:26,666 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 552 flow. Second operand 10 states and 211 transitions. [2025-03-09 01:29:26,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 266 transitions, 2621 flow [2025-03-09 01:29:26,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 266 transitions, 2581 flow, removed 7 selfloop flow, removed 1 redundant places. [2025-03-09 01:29:26,684 INFO L231 Difference]: Finished difference. Result has 76 places, 108 transitions, 961 flow [2025-03-09 01:29:26,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=961, PETRI_PLACES=76, PETRI_TRANSITIONS=108} [2025-03-09 01:29:26,685 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2025-03-09 01:29:26,685 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 108 transitions, 961 flow [2025-03-09 01:29:26,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:26,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:26,685 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] [2025-03-09 01:29:26,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 01:29:26,685 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:26,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:26,686 INFO L85 PathProgramCache]: Analyzing trace with hash -786895625, now seen corresponding path program 2 times [2025-03-09 01:29:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:26,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398441448] [2025-03-09 01:29:26,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:29:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:26,690 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:26,695 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:26,696 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:29:26,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:26,817 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 01:29:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398441448] [2025-03-09 01:29:26,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398441448] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:26,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:26,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:29:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064323900] [2025-03-09 01:29:26,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:26,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:29:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:26,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:29:26,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:29:26,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:29:26,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 108 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 01:29:26,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:26,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:29:26,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:27,416 INFO L124 PetriNetUnfolderBase]: 4976/7501 cut-off events. [2025-03-09 01:29:27,417 INFO L125 PetriNetUnfolderBase]: For 38110/38110 co-relation queries the response was YES. [2025-03-09 01:29:27,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35093 conditions, 7501 events. 4976/7501 cut-off events. For 38110/38110 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 44647 event pairs, 768 based on Foata normal form. 78/7577 useless extension candidates. Maximal degree in co-relation 22846. Up to 2999 conditions per place. [2025-03-09 01:29:27,475 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 155 selfloop transitions, 32 changer transitions 13/206 dead transitions. [2025-03-09 01:29:27,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 206 transitions, 2141 flow [2025-03-09 01:29:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:29:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:29:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-03-09 01:29:27,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2025-03-09 01:29:27,476 INFO L175 Difference]: Start difference. First operand has 76 places, 108 transitions, 961 flow. Second operand 5 states and 123 transitions. [2025-03-09 01:29:27,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 206 transitions, 2141 flow [2025-03-09 01:29:27,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 206 transitions, 2131 flow, removed 5 selfloop flow, removed 0 redundant places. [2025-03-09 01:29:27,531 INFO L231 Difference]: Finished difference. Result has 84 places, 122 transitions, 1232 flow [2025-03-09 01:29:27,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1232, PETRI_PLACES=84, PETRI_TRANSITIONS=122} [2025-03-09 01:29:27,532 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2025-03-09 01:29:27,532 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 122 transitions, 1232 flow [2025-03-09 01:29:27,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 01:29:27,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:27,532 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] [2025-03-09 01:29:27,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 01:29:27,533 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:27,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash -79393421, now seen corresponding path program 3 times [2025-03-09 01:29:27,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:27,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396638896] [2025-03-09 01:29:27,533 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:29:27,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:27,539 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:27,549 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:27,549 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 01:29:27,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:27,700 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 01:29:27,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:27,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396638896] [2025-03-09 01:29:27,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396638896] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:27,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:27,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:29:27,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632170143] [2025-03-09 01:29:27,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:27,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:29:27,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:27,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:29:27,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:29:27,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:29:27,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 122 transitions, 1232 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:27,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:27,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:29:27,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:28,515 INFO L124 PetriNetUnfolderBase]: 5996/8793 cut-off events. [2025-03-09 01:29:28,516 INFO L125 PetriNetUnfolderBase]: For 62386/62386 co-relation queries the response was YES. [2025-03-09 01:29:28,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44872 conditions, 8793 events. 5996/8793 cut-off events. For 62386/62386 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 51190 event pairs, 268 based on Foata normal form. 244/9035 useless extension candidates. Maximal degree in co-relation 26514. Up to 2342 conditions per place. [2025-03-09 01:29:28,586 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 185 selfloop transitions, 54 changer transitions 0/245 dead transitions. [2025-03-09 01:29:28,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 245 transitions, 2895 flow [2025-03-09 01:29:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:29:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:29:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2025-03-09 01:29:28,588 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-09 01:29:28,588 INFO L175 Difference]: Start difference. First operand has 84 places, 122 transitions, 1232 flow. Second operand 9 states and 185 transitions. [2025-03-09 01:29:28,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 245 transitions, 2895 flow [2025-03-09 01:29:28,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 245 transitions, 2869 flow, removed 13 selfloop flow, removed 0 redundant places. [2025-03-09 01:29:28,656 INFO L231 Difference]: Finished difference. Result has 98 places, 134 transitions, 1564 flow [2025-03-09 01:29:28,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1564, PETRI_PLACES=98, PETRI_TRANSITIONS=134} [2025-03-09 01:29:28,658 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2025-03-09 01:29:28,658 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 134 transitions, 1564 flow [2025-03-09 01:29:28,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:29:28,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:28,658 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] [2025-03-09 01:29:28,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 01:29:28,659 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:28,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash -907787811, now seen corresponding path program 4 times [2025-03-09 01:29:28,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:28,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124483580] [2025-03-09 01:29:28,660 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:29:28,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:28,668 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-09 01:29:28,696 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:28,696 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:29:28,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:30,123 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 01:29:30,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124483580] [2025-03-09 01:29:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124483580] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:30,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:30,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-09 01:29:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126560543] [2025-03-09 01:29:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:30,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:29:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:30,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:29:30,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:29:30,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:30,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 134 transitions, 1564 flow. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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 01:29:30,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:30,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:30,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:32,314 INFO L124 PetriNetUnfolderBase]: 7819/11847 cut-off events. [2025-03-09 01:29:32,314 INFO L125 PetriNetUnfolderBase]: For 101580/101670 co-relation queries the response was YES. [2025-03-09 01:29:32,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64684 conditions, 11847 events. 7819/11847 cut-off events. For 101580/101670 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 75027 event pairs, 885 based on Foata normal form. 100/11927 useless extension candidates. Maximal degree in co-relation 42419. Up to 7581 conditions per place. [2025-03-09 01:29:32,385 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 237 selfloop transitions, 75 changer transitions 72/395 dead transitions. [2025-03-09 01:29:32,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 395 transitions, 4955 flow [2025-03-09 01:29:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 01:29:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 01:29:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 373 transitions. [2025-03-09 01:29:32,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56006006006006 [2025-03-09 01:29:32,387 INFO L175 Difference]: Start difference. First operand has 98 places, 134 transitions, 1564 flow. Second operand 18 states and 373 transitions. [2025-03-09 01:29:32,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 395 transitions, 4955 flow [2025-03-09 01:29:32,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 395 transitions, 4931 flow, removed 12 selfloop flow, removed 0 redundant places. [2025-03-09 01:29:32,496 INFO L231 Difference]: Finished difference. Result has 127 places, 200 transitions, 2708 flow [2025-03-09 01:29:32,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2708, PETRI_PLACES=127, PETRI_TRANSITIONS=200} [2025-03-09 01:29:32,501 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2025-03-09 01:29:32,501 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 200 transitions, 2708 flow [2025-03-09 01:29:32,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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 01:29:32,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:32,501 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] [2025-03-09 01:29:32,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 01:29:32,501 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:32,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1763666935, now seen corresponding path program 5 times [2025-03-09 01:29:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:32,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-03-09 01:29:32,502 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:29:32,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:32,506 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:32,523 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:32,524 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:29:32,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:33,984 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 01:29:33,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:33,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-03-09 01:29:33,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533084619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:33,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:33,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-09 01:29:33,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646242410] [2025-03-09 01:29:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:33,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 01:29:33,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:33,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 01:29:33,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:29:34,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:29:34,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 200 transitions, 2708 flow. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 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 01:29:34,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:34,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:29:34,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:36,675 INFO L124 PetriNetUnfolderBase]: 8773/13031 cut-off events. [2025-03-09 01:29:36,675 INFO L125 PetriNetUnfolderBase]: For 131817/131817 co-relation queries the response was YES. [2025-03-09 01:29:36,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78076 conditions, 13031 events. 8773/13031 cut-off events. For 131817/131817 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 80790 event pairs, 1418 based on Foata normal form. 3/13032 useless extension candidates. Maximal degree in co-relation 77961. Up to 11336 conditions per place. [2025-03-09 01:29:36,784 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 270 selfloop transitions, 108 changer transitions 24/408 dead transitions. [2025-03-09 01:29:36,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 408 transitions, 5709 flow [2025-03-09 01:29:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 01:29:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 01:29:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 378 transitions. [2025-03-09 01:29:36,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2025-03-09 01:29:36,786 INFO L175 Difference]: Start difference. First operand has 127 places, 200 transitions, 2708 flow. Second operand 21 states and 378 transitions. [2025-03-09 01:29:36,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 408 transitions, 5709 flow [2025-03-09 01:29:37,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 408 transitions, 5490 flow, removed 99 selfloop flow, removed 5 redundant places. [2025-03-09 01:29:37,005 INFO L231 Difference]: Finished difference. Result has 155 places, 285 transitions, 4037 flow [2025-03-09 01:29:37,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2548, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4037, PETRI_PLACES=155, PETRI_TRANSITIONS=285} [2025-03-09 01:29:37,006 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 115 predicate places. [2025-03-09 01:29:37,006 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 285 transitions, 4037 flow [2025-03-09 01:29:37,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 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 01:29:37,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:37,006 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] [2025-03-09 01:29:37,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 01:29:37,006 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:37,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash 302370269, now seen corresponding path program 6 times [2025-03-09 01:29:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:37,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120437893] [2025-03-09 01:29:37,007 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:29:37,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:37,011 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:37,030 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:37,031 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-09 01:29:37,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:38,966 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 01:29:38,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:38,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120437893] [2025-03-09 01:29:38,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120437893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:38,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:38,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-09 01:29:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61549504] [2025-03-09 01:29:38,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:38,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 01:29:38,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:38,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 01:29:38,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:29:39,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:29:39,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 285 transitions, 4037 flow. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 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 01:29:39,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:39,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:29:39,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:42,479 INFO L124 PetriNetUnfolderBase]: 12208/18162 cut-off events. [2025-03-09 01:29:42,479 INFO L125 PetriNetUnfolderBase]: For 204948/204948 co-relation queries the response was YES. [2025-03-09 01:29:42,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113090 conditions, 18162 events. 12208/18162 cut-off events. For 204948/204948 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 118417 event pairs, 1243 based on Foata normal form. 9/18169 useless extension candidates. Maximal degree in co-relation 112972. Up to 12254 conditions per place. [2025-03-09 01:29:42,649 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 358 selfloop transitions, 96 changer transitions 58/518 dead transitions. [2025-03-09 01:29:42,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 518 transitions, 7704 flow [2025-03-09 01:29:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 01:29:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 01:29:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 342 transitions. [2025-03-09 01:29:42,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2025-03-09 01:29:42,651 INFO L175 Difference]: Start difference. First operand has 155 places, 285 transitions, 4037 flow. Second operand 18 states and 342 transitions. [2025-03-09 01:29:42,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 518 transitions, 7704 flow [2025-03-09 01:29:43,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 518 transitions, 7440 flow, removed 132 selfloop flow, removed 3 redundant places. [2025-03-09 01:29:43,159 INFO L231 Difference]: Finished difference. Result has 176 places, 330 transitions, 4880 flow [2025-03-09 01:29:43,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4880, PETRI_PLACES=176, PETRI_TRANSITIONS=330} [2025-03-09 01:29:43,160 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2025-03-09 01:29:43,160 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 330 transitions, 4880 flow [2025-03-09 01:29:43,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 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 01:29:43,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:43,160 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] [2025-03-09 01:29:43,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 01:29:43,160 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:43,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1537929937, now seen corresponding path program 7 times [2025-03-09 01:29:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416051863] [2025-03-09 01:29:43,161 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:29:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:43,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:43,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:43,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:29:43,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:45,304 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 01:29:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416051863] [2025-03-09 01:29:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416051863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:45,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:45,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-09 01:29:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985448884] [2025-03-09 01:29:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:45,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:29:45,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:45,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:29:45,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:29:45,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:29:45,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 330 transitions, 4880 flow. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 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 01:29:45,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:45,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:29:45,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:49,541 INFO L124 PetriNetUnfolderBase]: 12918/19082 cut-off events. [2025-03-09 01:29:49,541 INFO L125 PetriNetUnfolderBase]: For 265446/265446 co-relation queries the response was YES. [2025-03-09 01:29:49,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129477 conditions, 19082 events. 12918/19082 cut-off events. For 265446/265446 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 123520 event pairs, 1251 based on Foata normal form. 9/19089 useless extension candidates. Maximal degree in co-relation 129371. Up to 13223 conditions per place. [2025-03-09 01:29:49,825 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 329 selfloop transitions, 179 changer transitions 79/593 dead transitions. [2025-03-09 01:29:49,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 593 transitions, 8985 flow [2025-03-09 01:29:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 01:29:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 01:29:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 426 transitions. [2025-03-09 01:29:49,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2025-03-09 01:29:49,826 INFO L175 Difference]: Start difference. First operand has 176 places, 330 transitions, 4880 flow. Second operand 24 states and 426 transitions. [2025-03-09 01:29:49,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 593 transitions, 8985 flow [2025-03-09 01:29:50,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 593 transitions, 8822 flow, removed 73 selfloop flow, removed 2 redundant places. [2025-03-09 01:29:50,834 INFO L231 Difference]: Finished difference. Result has 208 places, 402 transitions, 6354 flow [2025-03-09 01:29:50,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4738, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6354, PETRI_PLACES=208, PETRI_TRANSITIONS=402} [2025-03-09 01:29:50,834 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 168 predicate places. [2025-03-09 01:29:50,835 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 402 transitions, 6354 flow [2025-03-09 01:29:50,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 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 01:29:50,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:50,835 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] [2025-03-09 01:29:50,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 01:29:50,835 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:50,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1805594367, now seen corresponding path program 1 times [2025-03-09 01:29:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:50,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955805619] [2025-03-09 01:29:50,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:29:50,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:50,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:50,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:50,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:29:50,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:50,957 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 01:29:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955805619] [2025-03-09 01:29:50,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955805619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:50,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:50,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:29:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021851520] [2025-03-09 01:29:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:50,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:29:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:50,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:29:50,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:29:50,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:50,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 402 transitions, 6354 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 01:29:50,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:50,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:50,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:29:54,732 INFO L124 PetriNetUnfolderBase]: 17024/25691 cut-off events. [2025-03-09 01:29:54,732 INFO L125 PetriNetUnfolderBase]: For 431838/432025 co-relation queries the response was YES. [2025-03-09 01:29:55,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186263 conditions, 25691 events. 17024/25691 cut-off events. For 431838/432025 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 177047 event pairs, 1792 based on Foata normal form. 427/26107 useless extension candidates. Maximal degree in co-relation 186104. Up to 12764 conditions per place. [2025-03-09 01:29:55,133 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 617 selfloop transitions, 108 changer transitions 0/738 dead transitions. [2025-03-09 01:29:55,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 738 transitions, 12570 flow [2025-03-09 01:29:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:29:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:29:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2025-03-09 01:29:55,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6336336336336337 [2025-03-09 01:29:55,134 INFO L175 Difference]: Start difference. First operand has 208 places, 402 transitions, 6354 flow. Second operand 9 states and 211 transitions. [2025-03-09 01:29:55,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 738 transitions, 12570 flow [2025-03-09 01:29:56,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 738 transitions, 12205 flow, removed 163 selfloop flow, removed 10 redundant places. [2025-03-09 01:29:56,835 INFO L231 Difference]: Finished difference. Result has 207 places, 450 transitions, 7340 flow [2025-03-09 01:29:56,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6079, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7340, PETRI_PLACES=207, PETRI_TRANSITIONS=450} [2025-03-09 01:29:56,836 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2025-03-09 01:29:56,836 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 450 transitions, 7340 flow [2025-03-09 01:29:56,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 01:29:56,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:29:56,836 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] [2025-03-09 01:29:56,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 01:29:56,837 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:29:56,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:29:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2086510717, now seen corresponding path program 2 times [2025-03-09 01:29:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:29:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931676439] [2025-03-09 01:29:56,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:29:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:29:56,840 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:29:56,847 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:29:56,847 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:29:56,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:29:56,992 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 01:29:56,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:29:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931676439] [2025-03-09 01:29:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931676439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:29:56,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:29:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:29:56,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057101998] [2025-03-09 01:29:56,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:29:56,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:29:56,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:29:56,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:29:56,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:29:56,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-09 01:29:56,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 450 transitions, 7340 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 01:29:56,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:29:56,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-09 01:29:56,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:02,022 INFO L124 PetriNetUnfolderBase]: 21519/32396 cut-off events. [2025-03-09 01:30:02,022 INFO L125 PetriNetUnfolderBase]: For 622754/623011 co-relation queries the response was YES. [2025-03-09 01:30:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244767 conditions, 32396 events. 21519/32396 cut-off events. For 622754/623011 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 231043 event pairs, 2184 based on Foata normal form. 387/32776 useless extension candidates. Maximal degree in co-relation 238699. Up to 19389 conditions per place. [2025-03-09 01:30:02,659 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 459 selfloop transitions, 183 changer transitions 0/655 dead transitions. [2025-03-09 01:30:02,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 655 transitions, 11372 flow [2025-03-09 01:30:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:30:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:30:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2025-03-09 01:30:02,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6156156156156156 [2025-03-09 01:30:02,660 INFO L175 Difference]: Start difference. First operand has 207 places, 450 transitions, 7340 flow. Second operand 9 states and 205 transitions. [2025-03-09 01:30:02,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 655 transitions, 11372 flow [2025-03-09 01:30:05,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 655 transitions, 11138 flow, removed 91 selfloop flow, removed 2 redundant places. [2025-03-09 01:30:05,244 INFO L231 Difference]: Finished difference. Result has 216 places, 506 transitions, 8865 flow [2025-03-09 01:30:05,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8865, PETRI_PLACES=216, PETRI_TRANSITIONS=506} [2025-03-09 01:30:05,245 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 176 predicate places. [2025-03-09 01:30:05,245 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 506 transitions, 8865 flow [2025-03-09 01:30:05,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 01:30:05,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:05,245 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:05,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 01:30:05,245 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:30:05,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash 845415869, now seen corresponding path program 8 times [2025-03-09 01:30:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102767686] [2025-03-09 01:30:05,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:05,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-09 01:30:05,273 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 01:30:05,273 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:05,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:06,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:06,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102767686] [2025-03-09 01:30:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102767686] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:06,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971430873] [2025-03-09 01:30:06,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:06,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:06,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:06,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:06,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 01:30:06,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-09 01:30:06,768 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 01:30:06,768 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:06,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:06,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-09 01:30:06,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:07,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:09,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971430873] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:09,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:09,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-09 01:30:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393319804] [2025-03-09 01:30:09,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:09,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 01:30:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:09,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 01:30:09,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2025-03-09 01:30:09,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-09 01:30:09,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 506 transitions, 8865 flow. Second operand has 23 states, 23 states have (on average 13.391304347826088) internal successors, (308), 23 states have internal predecessors, (308), 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 01:30:09,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:09,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-09 01:30:09,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:35,391 INFO L124 PetriNetUnfolderBase]: 79538/117262 cut-off events. [2025-03-09 01:30:35,391 INFO L125 PetriNetUnfolderBase]: For 2250303/2251364 co-relation queries the response was YES. [2025-03-09 01:30:37,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848360 conditions, 117262 events. 79538/117262 cut-off events. For 2250303/2251364 co-relation queries the response was YES. Maximal size of possible extension queue 4738. Compared 918496 event pairs, 3208 based on Foata normal form. 1072/118241 useless extension candidates. Maximal degree in co-relation 826159. Up to 26471 conditions per place. [2025-03-09 01:30:38,334 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 1146 selfloop transitions, 732 changer transitions 201/2091 dead transitions. [2025-03-09 01:30:38,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 2091 transitions, 36037 flow [2025-03-09 01:30:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-09 01:30:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2025-03-09 01:30:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1144 transitions. [2025-03-09 01:30:38,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5725725725725725 [2025-03-09 01:30:38,336 INFO L175 Difference]: Start difference. First operand has 216 places, 506 transitions, 8865 flow. Second operand 54 states and 1144 transitions. [2025-03-09 01:30:38,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 2091 transitions, 36037 flow