./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/termination-memory-alloca/b.10-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 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 ../../../trunk/examples/svcomp/termination-memory-alloca/b.10-alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 8f561bb39ee57b07ab3831dd4ee3a1e439959bee7f69e1cabc2315100876031b --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:48:13,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:48:13,411 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2025-04-30 10:48:13,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:48:13,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:48:13,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:48:13,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:48:13,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:48:13,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:48:13,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:48:13,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:48:13,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:48:13,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:48:13,431 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:48:13,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:48:13,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:48:13,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:48:13,431 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f561bb39ee57b07ab3831dd4ee3a1e439959bee7f69e1cabc2315100876031b [2025-04-30 10:48:13,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:48:13,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:48:13,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:48:13,655 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:48:13,655 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:48:13,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-memory-alloca/b.10-alloca.i [2025-04-30 10:48:14,949 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362685213/0c2c83c580644487b5e492865f64d6e4/FLAGff5651f4c [2025-04-30 10:48:15,179 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:48:15,179 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-memory-alloca/b.10-alloca.i [2025-04-30 10:48:15,193 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362685213/0c2c83c580644487b5e492865f64d6e4/FLAGff5651f4c [2025-04-30 10:48:15,949 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362685213/0c2c83c580644487b5e492865f64d6e4 [2025-04-30 10:48:15,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:48:15,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:48:15,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:48:15,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:48:15,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:48:15,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:48:15" (1/1) ... [2025-04-30 10:48:15,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a06f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:15, skipping insertion in model container [2025-04-30 10:48:15,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:48:15" (1/1) ... [2025-04-30 10:48:15,983 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:48:16,180 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:48:16,187 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:48:16,248 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:48:16,271 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:48:16,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16 WrapperNode [2025-04-30 10:48:16,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:48:16,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:48:16,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:48:16,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:48:16,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,289 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,305 INFO L138 Inliner]: procedures = 111, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2025-04-30 10:48:16,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:48:16,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:48:16,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:48:16,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:48:16,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,331 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [9, 7, 2]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 5 writes are split as follows [2, 2, 1]. [2025-04-30 10:48:16,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,336 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:48:16,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:48:16,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:48:16,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:48:16,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (1/1) ... [2025-04-30 10:48:16,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:48:16,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:48:16,379 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) [2025-04-30 10:48:16,384 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 [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-30 10:48:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:48:16,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:48:16,495 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:48:16,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:48:16,718 INFO L? ?]: Removed 87 outVars from TransFormulas that were not future-live. [2025-04-30 10:48:16,719 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:48:16,726 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:48:16,726 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-30 10:48:16,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:48:16 BoogieIcfgContainer [2025-04-30 10:48:16,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:48:16,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:48:16,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:48:16,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:48:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:48:15" (1/3) ... [2025-04-30 10:48:16,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393b1dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:48:16, skipping insertion in model container [2025-04-30 10:48:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:48:16" (2/3) ... [2025-04-30 10:48:16,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393b1dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:48:16, skipping insertion in model container [2025-04-30 10:48:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:48:16" (3/3) ... [2025-04-30 10:48:16,734 INFO L128 eAbstractionObserver]: Analyzing ICFG b.10-alloca.i [2025-04-30 10:48:16,742 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:48:16,744 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG b.10-alloca.i that has 1 procedures, 79 locations, 86 edges, 1 initial locations, 1 loop locations, and 37 error locations. [2025-04-30 10:48:16,769 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:48:16,777 INFO L340 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;@2c34bd3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:48:16,778 INFO L341 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-04-30 10:48:16,781 INFO L278 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 2.097560975609756) internal successors, (86), 78 states have internal predecessors, (86), 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) [2025-04-30 10:48:16,784 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-30 10:48:16,784 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:16,785 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-30 10:48:16,786 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:16,790 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2025-04-30 10:48:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:16,796 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337642437] [2025-04-30 10:48:16,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:16,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-30 10:48:16,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-30 10:48:16,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:16,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,062 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337642437] [2025-04-30 10:48:17,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337642437] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:48:17,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416835811] [2025-04-30 10:48:17,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,067 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:48:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:48:17,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,086 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 2.097560975609756) internal successors, (86), 78 states have internal predecessors, (86), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-04-30 10:48:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:17,190 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2025-04-30 10:48:17,191 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:48:17,192 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2025-04-30 10:48:17,192 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:17,197 INFO L225 Difference]: With dead ends: 70 [2025-04-30 10:48:17,197 INFO L226 Difference]: Without dead ends: 68 [2025-04-30 10:48:17,198 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,203 INFO L437 NwaCegarLoop]: 39 mSDtfsCounter, 60 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:17,204 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 40 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:48:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-04-30 10:48:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-04-30 10:48:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.85) internal successors, (74), 67 states have internal predecessors, (74), 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) [2025-04-30 10:48:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2025-04-30 10:48:17,225 INFO L79 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 3 [2025-04-30 10:48:17,225 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:17,225 INFO L485 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2025-04-30 10:48:17,225 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-04-30 10:48:17,225 INFO L278 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2025-04-30 10:48:17,225 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-30 10:48:17,225 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:17,226 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-30 10:48:17,226 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:48:17,226 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:17,226 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2025-04-30 10:48:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:17,226 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601429911] [2025-04-30 10:48:17,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:17,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-30 10:48:17,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-30 10:48:17,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:17,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,360 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601429911] [2025-04-30 10:48:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601429911] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:48:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264504658] [2025-04-30 10:48:17,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,361 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:48:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:48:17,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,361 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-04-30 10:48:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:17,410 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2025-04-30 10:48:17,410 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:48:17,410 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2025-04-30 10:48:17,410 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:17,411 INFO L225 Difference]: With dead ends: 59 [2025-04-30 10:48:17,411 INFO L226 Difference]: Without dead ends: 59 [2025-04-30 10:48:17,412 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,412 INFO L437 NwaCegarLoop]: 38 mSDtfsCounter, 61 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:17,412 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 40 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-04-30 10:48:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2025-04-30 10:48:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.625) internal successors, (65), 58 states have internal predecessors, (65), 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) [2025-04-30 10:48:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2025-04-30 10:48:17,415 INFO L79 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 3 [2025-04-30 10:48:17,416 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:17,416 INFO L485 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2025-04-30 10:48:17,416 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-04-30 10:48:17,416 INFO L278 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2025-04-30 10:48:17,416 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-30 10:48:17,416 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:17,416 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-30 10:48:17,416 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:48:17,416 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:17,417 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:17,417 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2025-04-30 10:48:17,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:17,417 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610187367] [2025-04-30 10:48:17,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:17,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:17,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-30 10:48:17,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-30 10:48:17,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:17,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,493 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610187367] [2025-04-30 10:48:17,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610187367] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:48:17,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75266492] [2025-04-30 10:48:17,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,494 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:48:17,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:48:17,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,495 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-04-30 10:48:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:17,542 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2025-04-30 10:48:17,543 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:48:17,543 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2025-04-30 10:48:17,543 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:17,543 INFO L225 Difference]: With dead ends: 52 [2025-04-30 10:48:17,543 INFO L226 Difference]: Without dead ends: 52 [2025-04-30 10:48:17,544 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,544 INFO L437 NwaCegarLoop]: 30 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:17,544 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 30 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-04-30 10:48:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-04-30 10:48:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.45) internal successors, (58), 51 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) [2025-04-30 10:48:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2025-04-30 10:48:17,548 INFO L79 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 4 [2025-04-30 10:48:17,548 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:17,548 INFO L485 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2025-04-30 10:48:17,548 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-04-30 10:48:17,548 INFO L278 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2025-04-30 10:48:17,549 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-30 10:48:17,549 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:17,549 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-30 10:48:17,549 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:48:17,549 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:17,549 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2025-04-30 10:48:17,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:17,549 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530043715] [2025-04-30 10:48:17,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:17,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:17,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-30 10:48:17,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-30 10:48:17,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:17,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,630 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530043715] [2025-04-30 10:48:17,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530043715] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:48:17,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864460302] [2025-04-30 10:48:17,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,631 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:48:17,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:48:17,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,632 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-04-30 10:48:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:17,668 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2025-04-30 10:48:17,669 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:48:17,669 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2025-04-30 10:48:17,669 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:17,670 INFO L225 Difference]: With dead ends: 45 [2025-04-30 10:48:17,670 INFO L226 Difference]: Without dead ends: 45 [2025-04-30 10:48:17,670 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,671 INFO L437 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:17,671 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 33 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-04-30 10:48:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-04-30 10:48:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.275) internal successors, (51), 44 states have internal predecessors, (51), 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) [2025-04-30 10:48:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2025-04-30 10:48:17,673 INFO L79 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 4 [2025-04-30 10:48:17,674 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:17,675 INFO L485 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2025-04-30 10:48:17,675 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-04-30 10:48:17,675 INFO L278 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2025-04-30 10:48:17,675 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-04-30 10:48:17,675 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:17,675 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-04-30 10:48:17,675 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:48:17,675 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:17,676 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2025-04-30 10:48:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:17,676 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64096089] [2025-04-30 10:48:17,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:17,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:17,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-30 10:48:17,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-30 10:48:17,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:17,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,714 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64096089] [2025-04-30 10:48:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64096089] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:48:17,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289525790] [2025-04-30 10:48:17,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,715 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:48:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:48:17,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,716 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-04-30 10:48:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:17,747 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2025-04-30 10:48:17,747 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:48:17,748 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2025-04-30 10:48:17,748 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:17,749 INFO L225 Difference]: With dead ends: 43 [2025-04-30 10:48:17,749 INFO L226 Difference]: Without dead ends: 43 [2025-04-30 10:48:17,749 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,750 INFO L437 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:17,750 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-04-30 10:48:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-04-30 10:48:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.225) internal successors, (49), 42 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) [2025-04-30 10:48:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-04-30 10:48:17,752 INFO L79 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 5 [2025-04-30 10:48:17,752 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:17,753 INFO L485 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-04-30 10:48:17,753 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-04-30 10:48:17,753 INFO L278 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-04-30 10:48:17,753 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-04-30 10:48:17,753 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:17,753 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-04-30 10:48:17,753 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-30 10:48:17,753 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:17,753 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2025-04-30 10:48:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:17,753 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646594033] [2025-04-30 10:48:17,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:17,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-30 10:48:17,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-30 10:48:17,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:17,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,820 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646594033] [2025-04-30 10:48:17,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646594033] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:48:17,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780148445] [2025-04-30 10:48:17,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,820 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:48:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:48:17,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,821 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-04-30 10:48:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:17,851 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2025-04-30 10:48:17,851 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:48:17,851 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2025-04-30 10:48:17,851 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:17,851 INFO L225 Difference]: With dead ends: 41 [2025-04-30 10:48:17,852 INFO L226 Difference]: Without dead ends: 41 [2025-04-30 10:48:17,852 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:48:17,852 INFO L437 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:17,852 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-04-30 10:48:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-04-30 10:48:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 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) [2025-04-30 10:48:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2025-04-30 10:48:17,854 INFO L79 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 5 [2025-04-30 10:48:17,854 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:17,854 INFO L485 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2025-04-30 10:48:17,854 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-04-30 10:48:17,857 INFO L278 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2025-04-30 10:48:17,857 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-30 10:48:17,857 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:17,857 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:48:17,857 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-30 10:48:17,858 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:17,858 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash -857997815, now seen corresponding path program 1 times [2025-04-30 10:48:17,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:17,858 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67061012] [2025-04-30 10:48:17,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:17,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:17,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-30 10:48:17,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-30 10:48:17,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:17,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,906 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67061012] [2025-04-30 10:48:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67061012] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:48:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588583977] [2025-04-30 10:48:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,906 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:48:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:48:17,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:48:17,907 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2025-04-30 10:48:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:17,925 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2025-04-30 10:48:17,925 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:48:17,925 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) Word has length 17 [2025-04-30 10:48:17,925 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:17,925 INFO L225 Difference]: With dead ends: 43 [2025-04-30 10:48:17,925 INFO L226 Difference]: Without dead ends: 43 [2025-04-30 10:48:17,925 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:48:17,926 INFO L437 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:17,927 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:17,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-04-30 10:48:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-04-30 10:48:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 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) [2025-04-30 10:48:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-04-30 10:48:17,929 INFO L79 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 17 [2025-04-30 10:48:17,929 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:17,929 INFO L485 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-04-30 10:48:17,929 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2025-04-30 10:48:17,929 INFO L278 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-04-30 10:48:17,930 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-30 10:48:17,930 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:17,930 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:48:17,930 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-30 10:48:17,930 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:17,930 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1732379543, now seen corresponding path program 1 times [2025-04-30 10:48:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:17,930 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585649366] [2025-04-30 10:48:17,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:17,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-30 10:48:17,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-30 10:48:17,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:17,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:17,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:17,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585649366] [2025-04-30 10:48:17,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585649366] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:17,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:17,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:48:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968097900] [2025-04-30 10:48:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:17,992 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:48:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:17,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:48:17,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:48:17,993 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2025-04-30 10:48:18,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:18,016 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2025-04-30 10:48:18,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:48:18,016 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) Word has length 20 [2025-04-30 10:48:18,016 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:18,017 INFO L225 Difference]: With dead ends: 45 [2025-04-30 10:48:18,017 INFO L226 Difference]: Without dead ends: 45 [2025-04-30 10:48:18,017 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:48:18,017 INFO L437 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:18,017 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:18,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-04-30 10:48:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-04-30 10:48:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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) [2025-04-30 10:48:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2025-04-30 10:48:18,019 INFO L79 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2025-04-30 10:48:18,022 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:18,023 INFO L485 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2025-04-30 10:48:18,023 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2025-04-30 10:48:18,023 INFO L278 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2025-04-30 10:48:18,023 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-30 10:48:18,024 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:18,024 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:48:18,024 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-30 10:48:18,024 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:18,025 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:18,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1664523262, now seen corresponding path program 1 times [2025-04-30 10:48:18,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:18,025 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485276049] [2025-04-30 10:48:18,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:18,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:18,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-30 10:48:18,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-30 10:48:18,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:18,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:18,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:18,173 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485276049] [2025-04-30 10:48:18,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485276049] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:18,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:18,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-30 10:48:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399665498] [2025-04-30 10:48:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:18,174 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-30 10:48:18,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:18,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-30 10:48:18,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:48:18,175 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2025-04-30 10:48:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:18,265 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2025-04-30 10:48:18,265 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:48:18,266 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) Word has length 21 [2025-04-30 10:48:18,269 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:18,269 INFO L225 Difference]: With dead ends: 80 [2025-04-30 10:48:18,269 INFO L226 Difference]: Without dead ends: 80 [2025-04-30 10:48:18,270 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:48:18,270 INFO L437 NwaCegarLoop]: 64 mSDtfsCounter, 67 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:18,270 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 253 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:48:18,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-04-30 10:48:18,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2025-04-30 10:48:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 74 states have internal predecessors, (87), 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) [2025-04-30 10:48:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2025-04-30 10:48:18,277 INFO L79 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 21 [2025-04-30 10:48:18,277 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:18,279 INFO L485 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2025-04-30 10:48:18,279 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2025-04-30 10:48:18,279 INFO L278 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2025-04-30 10:48:18,279 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-30 10:48:18,280 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:48:18,280 INFO L218 NwaCegarLoop]: 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] [2025-04-30 10:48:18,280 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-30 10:48:18,280 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2025-04-30 10:48:18,280 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:48:18,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1303087072, now seen corresponding path program 1 times [2025-04-30 10:48:18,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:48:18,280 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056423590] [2025-04-30 10:48:18,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:48:18,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:48:18,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:48:18,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:48:18,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:48:18,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:48:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:48:18,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:48:18,494 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056423590] [2025-04-30 10:48:18,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056423590] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:48:18,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:48:18,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:48:18,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040683095] [2025-04-30 10:48:18,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:48:18,494 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:48:18,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:48:18,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:48:18,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:48:18,495 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2025-04-30 10:48:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:48:18,533 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2025-04-30 10:48:18,533 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:48:18,533 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) Word has length 23 [2025-04-30 10:48:18,533 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:48:18,533 INFO L225 Difference]: With dead ends: 74 [2025-04-30 10:48:18,533 INFO L226 Difference]: Without dead ends: 0 [2025-04-30 10:48:18,533 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:48:18,534 INFO L437 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:48:18,534 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 51 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:48:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-30 10:48:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-30 10:48:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-04-30 10:48:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-30 10:48:18,534 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2025-04-30 10:48:18,534 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:48:18,534 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-30 10:48:18,534 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2025-04-30 10:48:18,535 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-30 10:48:18,535 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-30 10:48:18,537 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 37 remaining) [2025-04-30 10:48:18,537 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 37 remaining) [2025-04-30 10:48:18,538 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 37 remaining) [2025-04-30 10:48:18,539 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 37 remaining) [2025-04-30 10:48:18,539 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 37 remaining) [2025-04-30 10:48:18,539 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 37 remaining) [2025-04-30 10:48:18,539 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 37 remaining) [2025-04-30 10:48:18,541 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK (0 of 37 remaining) [2025-04-30 10:48:18,542 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-30 10:48:18,545 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:48:18,546 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:48:18,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:48:18 BoogieIcfgContainer [2025-04-30 10:48:18,549 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:48:18,549 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:48:18,549 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:48:18,549 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:48:18,550 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:48:16" (3/4) ... [2025-04-30 10:48:18,552 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-30 10:48:18,560 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-04-30 10:48:18,560 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-30 10:48:18,560 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-30 10:48:18,561 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-30 10:48:18,616 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:48:18,616 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:48:18,616 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:48:18,617 INFO L158 Benchmark]: Toolchain (without parser) took 2664.83ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 45.3MB in the end (delta: 59.7MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2025-04-30 10:48:18,618 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:48:18,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.01ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 85.4MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:48:18,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.27ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.1MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:48:18,618 INFO L158 Benchmark]: Boogie Preprocessor took 42.19ms. Allocated memory is still 142.6MB. Free memory was 83.1MB in the beginning and 80.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:48:18,619 INFO L158 Benchmark]: RCFGBuilder took 377.19ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 61.9MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:48:18,619 INFO L158 Benchmark]: TraceAbstraction took 1820.40ms. Allocated memory is still 142.6MB. Free memory was 61.9MB in the beginning and 52.6MB in the end (delta: 9.3MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2025-04-30 10:48:18,619 INFO L158 Benchmark]: Witness Printer took 67.45ms. Allocated memory is still 142.6MB. Free memory was 52.6MB in the beginning and 45.3MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:48:18,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.01ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 85.4MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.27ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.1MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.19ms. Allocated memory is still 142.6MB. Free memory was 83.1MB in the beginning and 80.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 377.19ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 61.9MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1820.40ms. Allocated memory is still 142.6MB. Free memory was 61.9MB in the beginning and 52.6MB in the end (delta: 9.3MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Witness Printer took 67.45ms. Allocated memory is still 142.6MB. Free memory was 52.6MB in the beginning and 45.3MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: -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: -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: -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: -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: -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: -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: -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: -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: 567]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 79 locations, 86 edges, 37 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 381 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 381 mSDsluCounter, 749 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 372 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 377 mSDtfsCounter, 372 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 671 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 37 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-30 10:48:18,636 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