./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_51-mutex_ptr.i --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/goblint-regression/04-mutex_51-mutex_ptr.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 676d96662ae61a9d27f232e6ef1f1837cf504ffa210b7be2fd6286f04a0fe098 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:16:40,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:16:40,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:16:40,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:16:40,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:16:40,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:16:40,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:16:40,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:16:40,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:16:40,690 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:16:40,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:16:40,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:16:40,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:16:40,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:16:40,690 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:16:40,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:16:40,691 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:16:40,692 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:16:40,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:16:40,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:16:40,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:16:40,693 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 -> 676d96662ae61a9d27f232e6ef1f1837cf504ffa210b7be2fd6286f04a0fe098 [2025-03-17 14:16:40,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:16:40,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:16:40,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:16:40,919 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:16:40,919 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:16:40,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_51-mutex_ptr.i [2025-03-17 14:16:42,085 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ba3f687/36a82bade2834d1d9873bd8641940329/FLAG81e996098 [2025-03-17 14:16:42,429 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:16:42,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_51-mutex_ptr.i [2025-03-17 14:16:42,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ba3f687/36a82bade2834d1d9873bd8641940329/FLAG81e996098 [2025-03-17 14:16:42,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ba3f687/36a82bade2834d1d9873bd8641940329 [2025-03-17 14:16:42,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:16:42,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:16:42,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:16:42,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:16:42,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:16:42,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:16:42" (1/1) ... [2025-03-17 14:16:42,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74465230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:42, skipping insertion in model container [2025-03-17 14:16:42,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:16:42" (1/1) ... [2025-03-17 14:16:42,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:16:43,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:16:43,032 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:16:43,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:16:43,119 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:16:43,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43 WrapperNode [2025-03-17 14:16:43,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:16:43,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:16:43,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:16:43,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:16:43,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,152 INFO L138 Inliner]: procedures = 262, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 92 [2025-03-17 14:16:43,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:16:43,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:16:43,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:16:43,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:16:43,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,173 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [5, 5]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [5, 1]. The 2 writes are split as follows [0, 2]. [2025-03-17 14:16:43,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,178 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:16:43,184 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:16:43,184 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:16:43,184 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:16:43,184 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (1/1) ... [2025-03-17 14:16:43,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:16:43,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:43,204 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 14:16:43,206 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 14:16:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 14:16:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 14:16:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 14:16:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 14:16:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:16:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:16:43,222 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 14:16:43,324 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:16:43,326 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:16:43,495 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:16:43,496 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:16:43,629 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:16:43,630 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:16:43,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:43 BoogieIcfgContainer [2025-03-17 14:16:43,630 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:16:43,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:16:43,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:16:43,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:16:43,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:16:42" (1/3) ... [2025-03-17 14:16:43,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaa5962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:16:43, skipping insertion in model container [2025-03-17 14:16:43,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:43" (2/3) ... [2025-03-17 14:16:43,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaa5962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:16:43, skipping insertion in model container [2025-03-17 14:16:43,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:43" (3/3) ... [2025-03-17 14:16:43,637 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_51-mutex_ptr.i [2025-03-17 14:16:43,648 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:16:43,649 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_51-mutex_ptr.i that has 2 procedures, 30 locations, 1 initial locations, 0 loop locations, and 9 error locations. [2025-03-17 14:16:43,649 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:16:43,685 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 14:16:43,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 65 flow [2025-03-17 14:16:43,730 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2025-03-17 14:16:43,733 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 14:16:43,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 0/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-17 14:16:43,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 65 flow [2025-03-17 14:16:43,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 60 flow [2025-03-17 14:16:43,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:16:43,769 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;@2e5352f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:16:43,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-17 14:16:43,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:16:43,774 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-17 14:16:43,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:16:43,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:43,776 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:16:43,776 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-03-17 14:16:43,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash -520699620, now seen corresponding path program 1 times [2025-03-17 14:16:43,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:43,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429142277] [2025-03-17 14:16:43,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:43,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:43,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:16:43,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:16:43,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:43,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:44,133 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 14:16:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:44,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429142277] [2025-03-17 14:16:44,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429142277] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:44,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:44,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:16:44,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893320596] [2025-03-17 14:16:44,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:44,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:16:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:44,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:16:44,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:16:44,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2025-03-17 14:16:44,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 14:16:44,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:44,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2025-03-17 14:16:44,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:44,252 INFO L124 PetriNetUnfolderBase]: 20/79 cut-off events. [2025-03-17 14:16:44,252 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 14:16:44,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 79 events. 20/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 252 event pairs, 0 based on Foata normal form. 11/83 useless extension candidates. Maximal degree in co-relation 123. Up to 46 conditions per place. [2025-03-17 14:16:44,254 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 14 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2025-03-17 14:16:44,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 92 flow [2025-03-17 14:16:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:16:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:16:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-03-17 14:16:44,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2025-03-17 14:16:44,266 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 4 states and 70 transitions. [2025-03-17 14:16:44,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 92 flow [2025-03-17 14:16:44,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:44,272 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 52 flow [2025-03-17 14:16:44,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2025-03-17 14:16:44,276 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2025-03-17 14:16:44,277 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 52 flow [2025-03-17 14:16:44,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 14:16:44,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:44,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:16:44,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:16:44,277 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-03-17 14:16:44,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash -521107058, now seen corresponding path program 1 times [2025-03-17 14:16:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746310502] [2025-03-17 14:16:44,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:44,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:44,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:16:44,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:16:44,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:44,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:44,446 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 14:16:44,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746310502] [2025-03-17 14:16:44,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746310502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:44,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:44,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:16:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347316945] [2025-03-17 14:16:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:44,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:16:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:44,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:16:44,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:16:44,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 29 [2025-03-17 14:16:44,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:16:44,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:44,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 29 [2025-03-17 14:16:44,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:44,522 INFO L124 PetriNetUnfolderBase]: 20/78 cut-off events. [2025-03-17 14:16:44,523 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 14:16:44,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 78 events. 20/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 20 based on Foata normal form. 5/77 useless extension candidates. Maximal degree in co-relation 83. Up to 52 conditions per place. [2025-03-17 14:16:44,523 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 11 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2025-03-17 14:16:44,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 72 flow [2025-03-17 14:16:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:16:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:16:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-03-17 14:16:44,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2025-03-17 14:16:44,525 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2025-03-17 14:16:44,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 72 flow [2025-03-17 14:16:44,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:44,527 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 47 flow [2025-03-17 14:16:44,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2025-03-17 14:16:44,528 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2025-03-17 14:16:44,528 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 47 flow [2025-03-17 14:16:44,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:16:44,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:44,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:16:44,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:16:44,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-03-17 14:16:44,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash -520699619, now seen corresponding path program 1 times [2025-03-17 14:16:44,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:44,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36977465] [2025-03-17 14:16:44,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:44,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:16:44,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:16:44,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:44,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:44,662 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 14:16:44,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36977465] [2025-03-17 14:16:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36977465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:16:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342205217] [2025-03-17 14:16:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:44,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:16:44,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:44,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:16:44,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:16:44,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2025-03-17 14:16:44,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 14:16:44,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:44,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2025-03-17 14:16:44,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:44,747 INFO L124 PetriNetUnfolderBase]: 20/67 cut-off events. [2025-03-17 14:16:44,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:16:44,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 67 events. 20/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 175 event pairs, 0 based on Foata normal form. 5/71 useless extension candidates. Maximal degree in co-relation 123. Up to 46 conditions per place. [2025-03-17 14:16:44,750 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 14 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2025-03-17 14:16:44,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 83 flow [2025-03-17 14:16:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:16:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:16:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2025-03-17 14:16:44,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-03-17 14:16:44,752 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 47 flow. Second operand 4 states and 66 transitions. [2025-03-17 14:16:44,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 83 flow [2025-03-17 14:16:44,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:16:44,752 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 46 flow [2025-03-17 14:16:44,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2025-03-17 14:16:44,753 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2025-03-17 14:16:44,753 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 46 flow [2025-03-17 14:16:44,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 14:16:44,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:44,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:44,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:16:44,754 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-03-17 14:16:44,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2018034142, now seen corresponding path program 1 times [2025-03-17 14:16:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074166717] [2025-03-17 14:16:44,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:44,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:16:44,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:16:44,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:44,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:44,805 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 14:16:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074166717] [2025-03-17 14:16:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074166717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:44,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:44,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:16:44,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564991824] [2025-03-17 14:16:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:44,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:16:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:44,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:16:44,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:16:44,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 29 [2025-03-17 14:16:44,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:16:44,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:44,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 29 [2025-03-17 14:16:44,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:44,849 INFO L124 PetriNetUnfolderBase]: 20/70 cut-off events. [2025-03-17 14:16:44,849 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2025-03-17 14:16:44,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 70 events. 20/70 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 191 event pairs, 20 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 131. Up to 52 conditions per place. [2025-03-17 14:16:44,850 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2025-03-17 14:16:44,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 18 transitions, 68 flow [2025-03-17 14:16:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:16:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:16:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-03-17 14:16:44,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-17 14:16:44,852 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 46 flow. Second operand 3 states and 58 transitions. [2025-03-17 14:16:44,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 18 transitions, 68 flow [2025-03-17 14:16:44,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 18 transitions, 65 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:44,853 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2025-03-17 14:16:44,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2025-03-17 14:16:44,853 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2025-03-17 14:16:44,853 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2025-03-17 14:16:44,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:16:44,855 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2025-03-17 14:16:44,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-03-17 14:16:44,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-03-17 14:16:44,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:16:44,858 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-17 14:16:44,862 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 14:16:44,862 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 14:16:44,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:16:44 BasicIcfg [2025-03-17 14:16:44,868 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 14:16:44,868 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 14:16:44,868 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 14:16:44,869 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 14:16:44,870 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:43" (3/4) ... [2025-03-17 14:16:44,871 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 14:16:44,873 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-17 14:16:44,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2025-03-17 14:16:44,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2025-03-17 14:16:44,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-03-17 14:16:44,876 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-17 14:16:44,877 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 14:16:44,937 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 14:16:44,937 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 14:16:44,937 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 14:16:44,938 INFO L158 Benchmark]: Toolchain (without parser) took 2270.63ms. Allocated memory is still 167.8MB. Free memory was 122.2MB in the beginning and 63.4MB in the end (delta: 58.8MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2025-03-17 14:16:44,938 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:44,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.84ms. Allocated memory is still 167.8MB. Free memory was 122.2MB in the beginning and 95.0MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 14:16:44,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.49ms. Allocated memory is still 167.8MB. Free memory was 95.0MB in the beginning and 92.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:16:44,938 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 167.8MB. Free memory was 92.5MB in the beginning and 90.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:44,938 INFO L158 Benchmark]: IcfgBuilder took 447.04ms. Allocated memory is still 167.8MB. Free memory was 90.6MB in the beginning and 46.3MB in the end (delta: 44.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-17 14:16:44,939 INFO L158 Benchmark]: TraceAbstraction took 1235.27ms. Allocated memory is still 167.8MB. Free memory was 45.6MB in the beginning and 69.2MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:44,940 INFO L158 Benchmark]: Witness Printer took 68.35ms. Allocated memory is still 167.8MB. Free memory was 69.2MB in the beginning and 63.4MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:44,940 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.84ms. Allocated memory is still 167.8MB. Free memory was 122.2MB in the beginning and 95.0MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.49ms. Allocated memory is still 167.8MB. Free memory was 95.0MB in the beginning and 92.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 167.8MB. Free memory was 92.5MB in the beginning and 90.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 447.04ms. Allocated memory is still 167.8MB. Free memory was 90.6MB in the beginning and 46.3MB in the end (delta: 44.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1235.27ms. Allocated memory is still 167.8MB. Free memory was 45.6MB in the beginning and 69.2MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 68.35ms. Allocated memory is still 167.8MB. Free memory was 69.2MB in the beginning and 63.4MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 930]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 43 locations, 42 edges, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 4 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 14:16:44,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE