./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix004.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/mix004.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89021de777f0aa5756284679b7b3bd19ab661d8d626f08ad7f7db0bc955b507d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:50:15,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:50:15,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:50:15,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:50:15,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:50:15,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:50:15,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:50:15,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:50:15,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:50:15,613 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:50:15,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:50:15,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:50:15,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:50:15,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:50:15,615 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:50:15,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:50:15,616 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:50:15,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:50:15,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:50:15,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:50:15,618 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:50:15,619 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:50:15,619 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:50:15,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:50:15,619 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:50:15,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:50:15,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:50:15,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:50:15,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:50:15,620 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:50:15,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:50:15,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:50:15,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:50:15,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:50:15,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:50:15,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:50:15,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:50:15,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:50:15,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:50:15,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:50:15,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:50:15,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:50:15,624 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89021de777f0aa5756284679b7b3bd19ab661d8d626f08ad7f7db0bc955b507d [2024-11-10 17:50:15,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:50:15,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:50:15,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:50:15,844 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:50:15,844 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:50:15,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix004.opt.i [2024-11-10 17:50:17,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:50:17,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:50:17,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix004.opt.i [2024-11-10 17:50:17,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319eca776/f624909df1514760a7fcd41b4ae52c82/FLAG837ab984a [2024-11-10 17:50:17,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319eca776/f624909df1514760a7fcd41b4ae52c82 [2024-11-10 17:50:17,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:50:17,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:50:17,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:50:17,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:50:17,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:50:17,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247a7213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17, skipping insertion in model container [2024-11-10 17:50:17,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:50:17,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:50:17,681 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:50:17,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:50:17,773 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:50:17,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17 WrapperNode [2024-11-10 17:50:17,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:50:17,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:50:17,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:50:17,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:50:17,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,816 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 156 [2024-11-10 17:50:17,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:50:17,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:50:17,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:50:17,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:50:17,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,854 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]. [2024-11-10 17:50:17,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:50:17,875 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:50:17,875 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:50:17,875 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:50:17,876 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (1/1) ... [2024-11-10 17:50:17,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:50:17,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:50:17,906 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) [2024-11-10 17:50:17,908 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 [2024-11-10 17:50:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:50:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:50:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 17:50:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 17:50:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 17:50:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 17:50:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-10 17:50:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-10 17:50:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-10 17:50:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-10 17:50:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:50:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:50:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:50:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:50:17,950 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:50:18,046 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:50:18,048 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:50:18,335 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:50:18,335 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:50:18,538 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:50:18,539 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:50:18,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:50:18 BoogieIcfgContainer [2024-11-10 17:50:18,540 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:50:18,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:50:18,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:50:18,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:50:18,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:50:17" (1/3) ... [2024-11-10 17:50:18,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb660bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:50:18, skipping insertion in model container [2024-11-10 17:50:18,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:50:17" (2/3) ... [2024-11-10 17:50:18,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb660bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:50:18, skipping insertion in model container [2024-11-10 17:50:18,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:50:18" (3/3) ... [2024-11-10 17:50:18,547 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.opt.i [2024-11-10 17:50:18,561 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:50:18,561 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-10 17:50:18,561 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:50:18,608 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:50:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 126 flow [2024-11-10 17:50:18,669 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2024-11-10 17:50:18,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:50:18,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-10 17:50:18,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 126 flow [2024-11-10 17:50:18,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 51 transitions, 114 flow [2024-11-10 17:50:18,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:50:18,690 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;@2c7054a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:50:18,691 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 17:50:18,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:50:18,704 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-11-10 17:50:18,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:50:18,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:50:18,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:50:18,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-10 17:50:18,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:50:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1202736747, now seen corresponding path program 1 times [2024-11-10 17:50:18,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:50:18,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726682361] [2024-11-10 17:50:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:50:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:50:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:50:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:50:19,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:50:19,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726682361] [2024-11-10 17:50:19,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726682361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:50:19,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:50:19,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:50:19,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925542382] [2024-11-10 17:50:19,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:50:19,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:50:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:50:19,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:50:19,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:50:19,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-10 17:50:19,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-10 17:50:19,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:50:19,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-10 17:50:19,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:50:24,116 INFO L124 PetriNetUnfolderBase]: 59279/78565 cut-off events. [2024-11-10 17:50:24,117 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-11-10 17:50:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156669 conditions, 78565 events. 59279/78565 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 2199. Compared 467933 event pairs, 7511 based on Foata normal form. 3528/82023 useless extension candidates. Maximal degree in co-relation 156657. Up to 66889 conditions per place. [2024-11-10 17:50:24,490 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 60 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2024-11-10 17:50:24,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 284 flow [2024-11-10 17:50:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:50:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:50:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-10 17:50:24,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-10 17:50:24,500 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 105 transitions. [2024-11-10 17:50:24,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 284 flow [2024-11-10 17:50:24,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:50:24,512 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 104 flow [2024-11-10 17:50:24,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-10 17:50:24,517 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2024-11-10 17:50:24,517 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 104 flow [2024-11-10 17:50:24,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-10 17:50:24,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:50:24,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:50:24,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:50:24,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-10 17:50:24,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:50:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash 93888636, now seen corresponding path program 1 times [2024-11-10 17:50:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:50:24,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134135195] [2024-11-10 17:50:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:50:24,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:50:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:50:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:50:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:50:24,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134135195] [2024-11-10 17:50:24,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134135195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:50:24,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:50:24,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:50:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206262271] [2024-11-10 17:50:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:50:24,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:50:24,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:50:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:50:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:50:24,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-11-10 17:50:24,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-10 17:50:24,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:50:24,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-11-10 17:50:24,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:50:29,116 INFO L124 PetriNetUnfolderBase]: 53315/74113 cut-off events. [2024-11-10 17:50:29,116 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2024-11-10 17:50:29,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146755 conditions, 74113 events. 53315/74113 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 483851 event pairs, 53315 based on Foata normal form. 1764/75555 useless extension candidates. Maximal degree in co-relation 146745. Up to 69780 conditions per place. [2024-11-10 17:50:29,437 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 36 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-11-10 17:50:29,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 178 flow [2024-11-10 17:50:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:50:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:50:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-10 17:50:29,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-10 17:50:29,439 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 72 transitions. [2024-11-10 17:50:29,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 178 flow [2024-11-10 17:50:29,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:50:29,456 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 98 flow [2024-11-10 17:50:29,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-11-10 17:50:29,457 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2024-11-10 17:50:29,457 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 98 flow [2024-11-10 17:50:29,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-10 17:50:29,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:50:29,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:50:29,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:50:29,457 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-10 17:50:29,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:50:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash 93889291, now seen corresponding path program 1 times [2024-11-10 17:50:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:50:29,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149264523] [2024-11-10 17:50:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:50:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:50:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:50:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:50:29,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:50:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149264523] [2024-11-10 17:50:29,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149264523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:50:29,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:50:29,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:50:29,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386635428] [2024-11-10 17:50:29,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:50:29,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:50:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:50:29,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:50:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:50:29,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-11-10 17:50:29,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 98 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) [2024-11-10 17:50:29,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:50:29,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-11-10 17:50:29,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:50:35,299 INFO L124 PetriNetUnfolderBase]: 69203/94407 cut-off events. [2024-11-10 17:50:35,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:50:35,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185897 conditions, 94407 events. 69203/94407 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2759. Compared 610999 event pairs, 35807 based on Foata normal form. 0/92643 useless extension candidates. Maximal degree in co-relation 185891. Up to 61525 conditions per place. [2024-11-10 17:50:35,666 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 50 selfloop transitions, 5 changer transitions 88/149 dead transitions. [2024-11-10 17:50:35,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 149 transitions, 600 flow [2024-11-10 17:50:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 17:50:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 17:50:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-11-10 17:50:35,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5295454545454545 [2024-11-10 17:50:35,669 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 98 flow. Second operand 8 states and 233 transitions. [2024-11-10 17:50:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 149 transitions, 600 flow [2024-11-10 17:50:35,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 149 transitions, 599 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:50:35,673 INFO L231 Difference]: Finished difference. Result has 66 places, 47 transitions, 152 flow [2024-11-10 17:50:35,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2024-11-10 17:50:35,674 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2024-11-10 17:50:35,674 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 152 flow [2024-11-10 17:50:35,674 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) [2024-11-10 17:50:35,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:50:35,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:50:35,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:50:35,674 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-10 17:50:35,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:50:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1483915368, now seen corresponding path program 1 times [2024-11-10 17:50:35,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:50:35,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168421105] [2024-11-10 17:50:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:50:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:50:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:50:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:50:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:50:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168421105] [2024-11-10 17:50:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168421105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:50:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:50:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:50:35,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032911351] [2024-11-10 17:50:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:50:35,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:50:35,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:50:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:50:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:50:35,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-11-10 17:50:35,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 152 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) [2024-11-10 17:50:35,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:50:35,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-11-10 17:50:35,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:50:40,628 INFO L124 PetriNetUnfolderBase]: 52299/71421 cut-off events. [2024-11-10 17:50:40,628 INFO L125 PetriNetUnfolderBase]: For 52957/52957 co-relation queries the response was YES. [2024-11-10 17:50:40,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179513 conditions, 71421 events. 52299/71421 cut-off events. For 52957/52957 co-relation queries the response was YES. Maximal size of possible extension queue 1995. Compared 450705 event pairs, 10779 based on Foata normal form. 1708/73082 useless extension candidates. Maximal degree in co-relation 179501. Up to 44905 conditions per place. [2024-11-10 17:50:40,995 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 60 selfloop transitions, 3 changer transitions 79/148 dead transitions. [2024-11-10 17:50:40,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 148 transitions, 752 flow [2024-11-10 17:50:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 17:50:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 17:50:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-11-10 17:50:40,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2024-11-10 17:50:40,997 INFO L175 Difference]: Start difference. First operand has 66 places, 47 transitions, 152 flow. Second operand 7 states and 217 transitions. [2024-11-10 17:50:40,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 148 transitions, 752 flow [2024-11-10 17:50:42,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 148 transitions, 739 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-10 17:50:42,046 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 162 flow [2024-11-10 17:50:42,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2024-11-10 17:50:42,047 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2024-11-10 17:50:42,047 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 162 flow [2024-11-10 17:50:42,047 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) [2024-11-10 17:50:42,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:50:42,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:50:42,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:50:42,048 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-10 17:50:42,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:50:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 124802844, now seen corresponding path program 1 times [2024-11-10 17:50:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:50:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817921386] [2024-11-10 17:50:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:50:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:50:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:50:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:50:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:50:42,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817921386] [2024-11-10 17:50:42,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817921386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:50:42,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:50:42,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:50:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388502511] [2024-11-10 17:50:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:50:42,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:50:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:50:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:50:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:50:42,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-11-10 17:50:42,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 162 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) [2024-11-10 17:50:42,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:50:42,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-11-10 17:50:42,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:50:46,606 INFO L124 PetriNetUnfolderBase]: 45755/62221 cut-off events. [2024-11-10 17:50:46,606 INFO L125 PetriNetUnfolderBase]: For 60577/60577 co-relation queries the response was YES. [2024-11-10 17:50:46,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160663 conditions, 62221 events. 45755/62221 cut-off events. For 60577/60577 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 372662 event pairs, 10095 based on Foata normal form. 1260/63434 useless extension candidates. Maximal degree in co-relation 160647. Up to 38761 conditions per place. [2024-11-10 17:50:47,005 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 58 selfloop transitions, 3 changer transitions 71/138 dead transitions. [2024-11-10 17:50:47,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 138 transitions, 705 flow [2024-11-10 17:50:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 17:50:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 17:50:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-11-10 17:50:47,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5376623376623376 [2024-11-10 17:50:47,007 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 162 flow. Second operand 7 states and 207 transitions. [2024-11-10 17:50:47,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 138 transitions, 705 flow [2024-11-10 17:50:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 138 transitions, 681 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-10 17:50:48,304 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 167 flow [2024-11-10 17:50:48,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2024-11-10 17:50:48,305 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2024-11-10 17:50:48,305 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 167 flow [2024-11-10 17:50:48,305 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) [2024-11-10 17:50:48,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:50:48,306 INFO L204 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] [2024-11-10 17:50:48,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:50:48,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-10 17:50:48,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:50:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -438690670, now seen corresponding path program 1 times [2024-11-10 17:50:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:50:48,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073726682] [2024-11-10 17:50:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:50:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:50:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:50:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:50:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:50:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073726682] [2024-11-10 17:50:48,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073726682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:50:48,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:50:48,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:50:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423691709] [2024-11-10 17:50:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:50:48,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:50:48,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:50:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:50:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:50:48,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-10 17:50:48,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:50:48,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:50:48,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-10 17:50:48,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand