./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loops/invert_string-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loops/invert_string-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 08:01:29,077 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 08:01:29,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 08:01:29,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 08:01:29,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 08:01:29,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 08:01:29,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 08:01:29,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 08:01:29,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 08:01:29,154 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 08:01:29,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 08:01:29,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 08:01:29,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 08:01:29,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 08:01:29,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 08:01:29,156 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 08:01:29,156 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 08:01:29,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 08:01:29,157 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 [2025-03-04 08:01:29,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 08:01:29,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 08:01:29,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 08:01:29,431 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 08:01:29,432 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 08:01:29,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/invert_string-2.c [2025-03-04 08:01:30,526 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a42ddc1/6b7da96493444f2e96798abe091ebb24/FLAG7f11215a2 [2025-03-04 08:01:30,787 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 08:01:30,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-2.c [2025-03-04 08:01:30,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a42ddc1/6b7da96493444f2e96798abe091ebb24/FLAG7f11215a2 [2025-03-04 08:01:31,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a42ddc1/6b7da96493444f2e96798abe091ebb24 [2025-03-04 08:01:31,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 08:01:31,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 08:01:31,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 08:01:31,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 08:01:31,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 08:01:31,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79da9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31, skipping insertion in model container [2025-03-04 08:01:31,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,120 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 08:01:31,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 08:01:31,224 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 08:01:31,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 08:01:31,245 INFO L204 MainTranslator]: Completed translation [2025-03-04 08:01:31,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31 WrapperNode [2025-03-04 08:01:31,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 08:01:31,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 08:01:31,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 08:01:31,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 08:01:31,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,273 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2025-03-04 08:01:31,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 08:01:31,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 08:01:31,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 08:01:31,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 08:01:31,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,292 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 4, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2025-03-04 08:01:31,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,295 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 08:01:31,304 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 08:01:31,304 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 08:01:31,304 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 08:01:31,305 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (1/1) ... [2025-03-04 08:01:31,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 08:01:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:01:31,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 08:01:31,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 08:01:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 08:01:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 08:01:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 08:01:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 08:01:31,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 08:01:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 08:01:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 08:01:31,417 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 08:01:31,418 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 08:01:31,588 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2025-03-04 08:01:31,589 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 08:01:31,595 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 08:01:31,595 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 08:01:31,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 08:01:31 BoogieIcfgContainer [2025-03-04 08:01:31,597 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 08:01:31,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 08:01:31,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 08:01:31,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 08:01:31,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 08:01:31" (1/3) ... [2025-03-04 08:01:31,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727ad0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 08:01:31, skipping insertion in model container [2025-03-04 08:01:31,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:01:31" (2/3) ... [2025-03-04 08:01:31,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727ad0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 08:01:31, skipping insertion in model container [2025-03-04 08:01:31,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 08:01:31" (3/3) ... [2025-03-04 08:01:31,605 INFO L128 eAbstractionObserver]: Analyzing ICFG invert_string-2.c [2025-03-04 08:01:31,617 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 08:01:31,619 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG invert_string-2.c that has 1 procedures, 37 locations, 1 initial locations, 3 loop locations, and 14 error locations. [2025-03-04 08:01:31,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 08:01:31,654 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e881865, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 08:01:31,654 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-04 08:01:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:01:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 08:01:31,662 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:01:31,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 08:01:31,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-03-04 08:01:31,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:01:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2123038, now seen corresponding path program 1 times [2025-03-04 08:01:31,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:01:31,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981330406] [2025-03-04 08:01:31,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:01:31,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:01:31,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 08:01:31,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 08:01:31,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:01:31,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:01:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:01:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:01:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981330406] [2025-03-04 08:01:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981330406] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 08:01:31,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 08:01:31,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 08:01:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413030120] [2025-03-04 08:01:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 08:01:31,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 08:01:31,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:01:31,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 08:01:31,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 08:01:31,911 INFO L87 Difference]: Start difference. First operand has 37 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 36 states have internal predecessors, (40), 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 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) [2025-03-04 08:01:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:01:31,952 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2025-03-04 08:01:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 08:01:31,954 INFO L78 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 [2025-03-04 08:01:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:01:31,958 INFO L225 Difference]: With dead ends: 32 [2025-03-04 08:01:31,958 INFO L226 Difference]: Without dead ends: 30 [2025-03-04 08:01:31,961 INFO L434 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 [2025-03-04 08:01:31,963 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 08:01:31,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 08:01:31,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-04 08:01:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-03-04 08:01:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.6) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:01:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2025-03-04 08:01:31,984 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2025-03-04 08:01:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:01:31,984 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2025-03-04 08:01:31,984 INFO L472 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) [2025-03-04 08:01:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2025-03-04 08:01:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 08:01:31,984 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:01:31,984 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 08:01:31,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 08:01:31,985 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-03-04 08:01:31,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:01:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2123039, now seen corresponding path program 1 times [2025-03-04 08:01:31,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:01:31,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526346865] [2025-03-04 08:01:31,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:01:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:01:31,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 08:01:32,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 08:01:32,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:01:32,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:01:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:01:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:01:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526346865] [2025-03-04 08:01:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526346865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 08:01:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 08:01:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 08:01:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121031722] [2025-03-04 08:01:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 08:01:32,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 08:01:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:01:32,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 08:01:32,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 08:01:32,236 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2025-03-04 08:01:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:01:32,317 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2025-03-04 08:01:32,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 08:01:32,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2025-03-04 08:01:32,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:01:32,318 INFO L225 Difference]: With dead ends: 33 [2025-03-04 08:01:32,318 INFO L226 Difference]: Without dead ends: 33 [2025-03-04 08:01:32,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 08:01:32,319 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 08:01:32,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 08:01:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-03-04 08:01:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2025-03-04 08:01:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:01:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2025-03-04 08:01:32,322 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 4 [2025-03-04 08:01:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:01:32,322 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2025-03-04 08:01:32,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2025-03-04 08:01:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2025-03-04 08:01:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 08:01:32,323 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:01:32,323 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 08:01:32,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 08:01:32,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-03-04 08:01:32,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:01:32,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2123066, now seen corresponding path program 1 times [2025-03-04 08:01:32,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:01:32,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394834770] [2025-03-04 08:01:32,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:01:32,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:01:32,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 08:01:32,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 08:01:32,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:01:32,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 08:01:32,343 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 08:01:32,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 08:01:32,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 08:01:32,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:01:32,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 08:01:32,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 08:01:32,371 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 08:01:32,372 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2025-03-04 08:01:32,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (12 of 14 remaining) [2025-03-04 08:01:32,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (11 of 14 remaining) [2025-03-04 08:01:32,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2025-03-04 08:01:32,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2025-03-04 08:01:32,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2025-03-04 08:01:32,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2025-03-04 08:01:32,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2025-03-04 08:01:32,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2025-03-04 08:01:32,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2025-03-04 08:01:32,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-03-04 08:01:32,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-03-04 08:01:32,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-03-04 08:01:32,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-03-04 08:01:32,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 08:01:32,378 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-04 08:01:32,390 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 08:01:32,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 08:01:32 BoogieIcfgContainer [2025-03-04 08:01:32,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 08:01:32,395 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 08:01:32,395 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 08:01:32,395 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 08:01:32,395 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 08:01:31" (3/4) ... [2025-03-04 08:01:32,396 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-04 08:01:32,427 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 2. [2025-03-04 08:01:32,470 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 08:01:32,471 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 08:01:32,471 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 08:01:32,471 INFO L158 Benchmark]: Toolchain (without parser) took 1366.04ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 121.0MB in the end (delta: 2.2MB). Peak memory consumption was 88.5MB. Max. memory is 16.1GB. [2025-03-04 08:01:32,471 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 08:01:32,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.26ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 112.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 08:01:32,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.64ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 111.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 08:01:32,472 INFO L158 Benchmark]: Boogie Preprocessor took 29.03ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 08:01:32,472 INFO L158 Benchmark]: IcfgBuilder took 292.58ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 95.3MB in the end (delta: 14.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 08:01:32,472 INFO L158 Benchmark]: TraceAbstraction took 795.02ms. Allocated memory is still 167.8MB. Free memory was 95.3MB in the beginning and 37.7MB in the end (delta: 57.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-04 08:01:32,472 INFO L158 Benchmark]: Witness Printer took 76.08ms. Allocated memory is still 167.8MB. Free memory was 37.7MB in the beginning and 121.0MB in the end (delta: -83.3MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2025-03-04 08:01:32,475 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 140.26ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 112.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.64ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 111.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.03ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 292.58ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 95.3MB in the end (delta: 14.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 795.02ms. Allocated memory is still 167.8MB. Free memory was 95.3MB in the beginning and 37.7MB in the end (delta: 57.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 76.08ms. Allocated memory is still 167.8MB. Free memory was 37.7MB in the beginning and 121.0MB in the end (delta: -83.3MB). Peak memory consumption was 13.0MB. 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] int MAX = __VERIFIER_nondet_uint(); [L16] char str1[MAX], str2[MAX]; [L17] int cont, i, j; [L18] cont = 0 [L20] i=0 VAL [MAX=-1, i=0, str1={5:0}, str2={4:0}] [L20] COND FALSE !(i