./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/test-easy10.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 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:33:11,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:33:11,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:33:11,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:33:11,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:33:11,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:33:11,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:33:11,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:33:11,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:33:11,918 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:33:11,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:33:11,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:33:11,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:33:11,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:33:11,919 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:33:11,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:33:11,919 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:33:11,920 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:33:11,921 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:33:11,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:33:11,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:33:11,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:33:11,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:33:11,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:33:11,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:33:11,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:33:11,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:33:11,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:33:11,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:33:11,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:33:11,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:33:11,922 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 -> 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 [2025-03-17 14:33:12,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:33:12,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:33:12,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:33:12,137 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:33:12,137 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:33:12,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-03-17 14:33:13,227 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b1a633a/0d3e708435ae42e98773fac40c075530/FLAG758fc1a3e [2025-03-17 14:33:13,450 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:33:13,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-03-17 14:33:13,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b1a633a/0d3e708435ae42e98773fac40c075530/FLAG758fc1a3e [2025-03-17 14:33:13,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b1a633a/0d3e708435ae42e98773fac40c075530 [2025-03-17 14:33:13,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:33:13,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:33:13,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:33:13,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:33:13,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:33:13,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a406bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13, skipping insertion in model container [2025-03-17 14:33:13,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:33:13,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:33:13,625 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:33:13,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:33:13,659 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:33:13,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13 WrapperNode [2025-03-17 14:33:13,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:33:13,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:33:13,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:33:13,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:33:13,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,682 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 149 [2025-03-17 14:33:13,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:33:13,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:33:13,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:33:13,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:33:13,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,698 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 14:33:13,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:33:13,706 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:33:13,706 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:33:13,706 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:33:13,707 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (1/1) ... [2025-03-17 14:33:13,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:33:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:33:13,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 14:33:13,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 14:33:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:33:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 14:33:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 14:33:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 14:33:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 14:33:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 14:33:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 14:33:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 14:33:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 14:33:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:33:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:33:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:33:13,755 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:33:13,826 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:33:13,828 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:33:14,050 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:33:14,050 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:33:14,173 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:33:14,175 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:33:14,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:33:14 BoogieIcfgContainer [2025-03-17 14:33:14,175 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:33:14,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:33:14,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:33:14,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:33:14,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:33:13" (1/3) ... [2025-03-17 14:33:14,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c79897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:33:14, skipping insertion in model container [2025-03-17 14:33:14,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:33:13" (2/3) ... [2025-03-17 14:33:14,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c79897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:33:14, skipping insertion in model container [2025-03-17 14:33:14,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:33:14" (3/3) ... [2025-03-17 14:33:14,183 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2025-03-17 14:33:14,194 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:33:14,197 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy10.wvr.c that has 5 procedures, 63 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-17 14:33:14,197 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:33:14,248 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 14:33:14,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 62 transitions, 152 flow [2025-03-17 14:33:14,307 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2025-03-17 14:33:14,309 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 14:33:14,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 0/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-17 14:33:14,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 62 transitions, 152 flow [2025-03-17 14:33:14,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 57 transitions, 138 flow [2025-03-17 14:33:14,318 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:33:14,325 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;@6a5543ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:33:14,325 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-17 14:33:14,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:33:14,338 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2025-03-17 14:33:14,338 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 14:33:14,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:33:14,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:33:14,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 14:33:14,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:33:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash -917089841, now seen corresponding path program 1 times [2025-03-17 14:33:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:33:14,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843654323] [2025-03-17 14:33:14,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:33:14,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:33:14,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-17 14:33:14,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 14:33:14,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:33:14,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:33:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:33:14,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:33:14,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843654323] [2025-03-17 14:33:14,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843654323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:33:14,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:33:14,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:33:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194962193] [2025-03-17 14:33:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:33:14,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:33:14,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:33:14,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:33:14,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:33:14,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-03-17 14:33:14,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:14,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:33:14,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-03-17 14:33:14,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:33:16,635 INFO L124 PetriNetUnfolderBase]: 22838/30875 cut-off events. [2025-03-17 14:33:16,636 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2025-03-17 14:33:16,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63061 conditions, 30875 events. 22838/30875 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 171244 event pairs, 7169 based on Foata normal form. 441/31275 useless extension candidates. Maximal degree in co-relation 59981. Up to 24496 conditions per place. [2025-03-17 14:33:16,793 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-03-17 14:33:16,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 328 flow [2025-03-17 14:33:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:33:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:33:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-03-17 14:33:16,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2025-03-17 14:33:16,802 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 138 flow. Second operand 3 states and 104 transitions. [2025-03-17 14:33:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 328 flow [2025-03-17 14:33:16,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-17 14:33:16,869 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 126 flow [2025-03-17 14:33:16,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2025-03-17 14:33:16,873 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2025-03-17 14:33:16,874 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 126 flow [2025-03-17 14:33:16,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:16,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:33:16,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:33:16,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:33:16,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 14:33:16,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:33:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1224781125, now seen corresponding path program 2 times [2025-03-17 14:33:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:33:16,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634070748] [2025-03-17 14:33:16,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:33:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:33:16,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-03-17 14:33:16,902 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 14:33:16,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:33:16,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:33:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:33:17,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:33:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634070748] [2025-03-17 14:33:17,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634070748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:33:17,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:33:17,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:33:17,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907098714] [2025-03-17 14:33:17,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:33:17,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:33:17,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:33:17,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:33:17,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:33:17,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-03-17 14:33:17,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:17,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:33:17,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-03-17 14:33:17,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:33:18,228 INFO L124 PetriNetUnfolderBase]: 17539/23837 cut-off events. [2025-03-17 14:33:18,228 INFO L125 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2025-03-17 14:33:18,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49392 conditions, 23837 events. 17539/23837 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 123942 event pairs, 6369 based on Foata normal form. 434/24222 useless extension candidates. Maximal degree in co-relation 17479. Up to 17342 conditions per place. [2025-03-17 14:33:18,315 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 68 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-03-17 14:33:18,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 313 flow [2025-03-17 14:33:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:33:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:33:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-17 14:33:18,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543010752688172 [2025-03-17 14:33:18,319 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 126 flow. Second operand 3 states and 101 transitions. [2025-03-17 14:33:18,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 313 flow [2025-03-17 14:33:18,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:33:18,323 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2025-03-17 14:33:18,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-03-17 14:33:18,324 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2025-03-17 14:33:18,324 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2025-03-17 14:33:18,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:18,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:33:18,325 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:33:18,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:33:18,325 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 14:33:18,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:33:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash 540428055, now seen corresponding path program 3 times [2025-03-17 14:33:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:33:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451840267] [2025-03-17 14:33:18,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:33:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:33:18,341 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 1 equivalence classes. [2025-03-17 14:33:18,430 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 14:33:18,431 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 14:33:18,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:33:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:33:20,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:33:20,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451840267] [2025-03-17 14:33:20,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451840267] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:33:20,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:33:20,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 14:33:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247257305] [2025-03-17 14:33:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:33:20,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 14:33:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:33:20,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 14:33:20,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-03-17 14:33:20,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-03-17 14:33:20,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 130 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:20,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:33:20,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-03-17 14:33:20,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:33:23,898 INFO L124 PetriNetUnfolderBase]: 43818/60147 cut-off events. [2025-03-17 14:33:23,898 INFO L125 PetriNetUnfolderBase]: For 4618/4618 co-relation queries the response was YES. [2025-03-17 14:33:23,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127496 conditions, 60147 events. 43818/60147 cut-off events. For 4618/4618 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 364936 event pairs, 5303 based on Foata normal form. 1/60123 useless extension candidates. Maximal degree in co-relation 25744. Up to 14408 conditions per place. [2025-03-17 14:33:24,141 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 251 selfloop transitions, 16 changer transitions 19/291 dead transitions. [2025-03-17 14:33:24,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 291 transitions, 1271 flow [2025-03-17 14:33:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 14:33:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 14:33:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 437 transitions. [2025-03-17 14:33:24,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4698924731182796 [2025-03-17 14:33:24,146 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 130 flow. Second operand 15 states and 437 transitions. [2025-03-17 14:33:24,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 291 transitions, 1271 flow [2025-03-17 14:33:24,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 291 transitions, 1251 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:33:24,176 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 250 flow [2025-03-17 14:33:24,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2025-03-17 14:33:24,177 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2025-03-17 14:33:24,177 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 250 flow [2025-03-17 14:33:24,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:24,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:33:24,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:33:24,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:33:24,177 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 14:33:24,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:33:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1975266319, now seen corresponding path program 4 times [2025-03-17 14:33:24,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:33:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920937032] [2025-03-17 14:33:24,180 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:33:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:33:24,191 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-03-17 14:33:24,199 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 14:33:24,199 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:33:24,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:33:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:33:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:33:24,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920937032] [2025-03-17 14:33:24,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920937032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:33:24,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:33:24,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:33:24,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668680876] [2025-03-17 14:33:24,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:33:24,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:33:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:33:24,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:33:24,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:33:24,267 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-03-17 14:33:24,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:24,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:33:24,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-03-17 14:33:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:33:26,588 INFO L124 PetriNetUnfolderBase]: 35366/48902 cut-off events. [2025-03-17 14:33:26,588 INFO L125 PetriNetUnfolderBase]: For 33407/33407 co-relation queries the response was YES. [2025-03-17 14:33:26,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131387 conditions, 48902 events. 35366/48902 cut-off events. For 33407/33407 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 290963 event pairs, 14368 based on Foata normal form. 540/49406 useless extension candidates. Maximal degree in co-relation 131342. Up to 42949 conditions per place. [2025-03-17 14:33:26,922 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 86 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2025-03-17 14:33:26,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 503 flow [2025-03-17 14:33:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:33:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:33:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-03-17 14:33:26,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2025-03-17 14:33:26,923 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 250 flow. Second operand 3 states and 105 transitions. [2025-03-17 14:33:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 503 flow [2025-03-17 14:33:27,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 487 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 14:33:27,468 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 234 flow [2025-03-17 14:33:27,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2025-03-17 14:33:27,469 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2025-03-17 14:33:27,469 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 234 flow [2025-03-17 14:33:27,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:27,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:33:27,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:33:27,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:33:27,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 14:33:27,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:33:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 586248007, now seen corresponding path program 5 times [2025-03-17 14:33:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:33:27,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261225061] [2025-03-17 14:33:27,471 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:33:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:33:27,477 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-03-17 14:33:27,523 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 14:33:27,524 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:33:27,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:33:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:33:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:33:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261225061] [2025-03-17 14:33:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261225061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:33:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:33:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 14:33:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880036860] [2025-03-17 14:33:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:33:28,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 14:33:28,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:33:28,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 14:33:28,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-03-17 14:33:28,793 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-03-17 14:33:28,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:28,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:33:28,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-03-17 14:33:28,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:33:34,567 INFO L124 PetriNetUnfolderBase]: 65121/91304 cut-off events. [2025-03-17 14:33:34,567 INFO L125 PetriNetUnfolderBase]: For 52985/52985 co-relation queries the response was YES. [2025-03-17 14:33:34,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239409 conditions, 91304 events. 65121/91304 cut-off events. For 52985/52985 co-relation queries the response was YES. Maximal size of possible extension queue 2106. Compared 601608 event pairs, 9909 based on Foata normal form. 1/91276 useless extension candidates. Maximal degree in co-relation 181201. Up to 28006 conditions per place. [2025-03-17 14:33:35,067 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 290 selfloop transitions, 27 changer transitions 10/332 dead transitions. [2025-03-17 14:33:35,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 332 transitions, 1834 flow [2025-03-17 14:33:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 14:33:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 14:33:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 431 transitions. [2025-03-17 14:33:35,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46344086021505376 [2025-03-17 14:33:35,069 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 234 flow. Second operand 15 states and 431 transitions. [2025-03-17 14:33:35,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 332 transitions, 1834 flow [2025-03-17 14:33:35,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 332 transitions, 1814 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:33:35,728 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 482 flow [2025-03-17 14:33:35,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=482, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2025-03-17 14:33:35,729 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 39 predicate places. [2025-03-17 14:33:35,729 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 482 flow [2025-03-17 14:33:35,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:35,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:33:35,729 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:33:35,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:33:35,730 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 14:33:35,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:33:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash 750717347, now seen corresponding path program 6 times [2025-03-17 14:33:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:33:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303034228] [2025-03-17 14:33:35,730 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:33:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:33:35,736 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 1 equivalence classes. [2025-03-17 14:33:35,763 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 14:33:35,764 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 14:33:35,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:33:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:33:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:33:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303034228] [2025-03-17 14:33:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303034228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:33:36,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:33:36,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 14:33:36,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201520031] [2025-03-17 14:33:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:33:36,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 14:33:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:33:36,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 14:33:36,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-17 14:33:36,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-03-17 14:33:36,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 482 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:36,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:33:36,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-03-17 14:33:36,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:33:45,636 INFO L124 PetriNetUnfolderBase]: 95501/134922 cut-off events. [2025-03-17 14:33:45,637 INFO L125 PetriNetUnfolderBase]: For 206872/206872 co-relation queries the response was YES. [2025-03-17 14:33:46,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410357 conditions, 134922 events. 95501/134922 cut-off events. For 206872/206872 co-relation queries the response was YES. Maximal size of possible extension queue 3099. Compared 945245 event pairs, 15614 based on Foata normal form. 1/134898 useless extension candidates. Maximal degree in co-relation 410009. Up to 36303 conditions per place. [2025-03-17 14:33:46,652 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 310 selfloop transitions, 47 changer transitions 11/373 dead transitions. [2025-03-17 14:33:46,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 373 transitions, 2595 flow [2025-03-17 14:33:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 14:33:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 14:33:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 428 transitions. [2025-03-17 14:33:46,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46021505376344085 [2025-03-17 14:33:46,654 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 482 flow. Second operand 15 states and 428 transitions. [2025-03-17 14:33:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 373 transitions, 2595 flow [2025-03-17 14:33:51,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 373 transitions, 2557 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-17 14:33:51,496 INFO L231 Difference]: Finished difference. Result has 131 places, 120 transitions, 976 flow [2025-03-17 14:33:51,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=976, PETRI_PLACES=131, PETRI_TRANSITIONS=120} [2025-03-17 14:33:51,496 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 61 predicate places. [2025-03-17 14:33:51,497 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 120 transitions, 976 flow [2025-03-17 14:33:51,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:51,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:33:51,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:33:51,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:33:51,497 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 14:33:51,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:33:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash -744688343, now seen corresponding path program 7 times [2025-03-17 14:33:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:33:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700479201] [2025-03-17 14:33:51,498 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:33:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:33:51,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-17 14:33:51,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 14:33:51,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:33:51,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:33:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:33:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:33:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700479201] [2025-03-17 14:33:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700479201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:33:52,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:33:52,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 14:33:52,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352775205] [2025-03-17 14:33:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:33:52,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 14:33:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:33:52,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 14:33:52,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-03-17 14:33:52,660 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-03-17 14:33:52,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 120 transitions, 976 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:33:52,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:33:52,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-03-17 14:33:52,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand