./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/list-ext-properties/test-0158_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/list-ext-properties/test-0158_1-2.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 d284b23884982d4b11f85b2ee1662e03201c2f0c0e0d0d5ca8c4610ecb36fc48 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:17:11,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:17:11,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-29 11:17:11,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:17:11,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:17:11,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:17:11,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:17:11,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:17:11,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:17:11,211 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:17:11,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:17:11,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:17:11,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:17:11,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:17:11,212 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:17:11,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:17:11,213 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:17:11,214 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:17:11,214 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:17:11,214 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:17:11,214 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:17:11,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:17:11,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:17:11,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:17:11,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:17:11,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:17:11,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:17:11,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:17:11,215 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 -> d284b23884982d4b11f85b2ee1662e03201c2f0c0e0d0d5ca8c4610ecb36fc48 [2025-04-29 11:17:11,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:17:11,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:17:11,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:17:11,452 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:17:11,452 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:17:11,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0158_1-2.c [2025-04-29 11:17:12,746 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740bb60ac/86d79c641e5a4fcbb610494ce727f2c7/FLAGff831c638 [2025-04-29 11:17:12,960 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:17:12,960 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/test-0158_1-2.c [2025-04-29 11:17:12,962 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:17:12,962 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:17:12,969 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740bb60ac/86d79c641e5a4fcbb610494ce727f2c7/FLAGff831c638 [2025-04-29 11:17:13,748 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740bb60ac/86d79c641e5a4fcbb610494ce727f2c7 [2025-04-29 11:17:13,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:17:13,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:17:13,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:17:13,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:17:13,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:17:13,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6a9cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13, skipping insertion in model container [2025-04-29 11:17:13,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:17:13,893 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:17:13,897 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:17:13,921 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:17:13,932 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:17:13,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13 WrapperNode [2025-04-29 11:17:13,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:17:13,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:17:13,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:17:13,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:17:13,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,955 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2025-04-29 11:17:13,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:17:13,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:17:13,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:17:13,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:17:13,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,972 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2025-04-29 11:17:13,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,975 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:17:13,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:17:13,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:17:13,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:17:13,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (1/1) ... [2025-04-29 11:17:13,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:17:13,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:17:14,003 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) [2025-04-29 11:17:14,005 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 [2025-04-29 11:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:17:14,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-29 11:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-29 11:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:17:14,063 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:17:14,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:17:14,187 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2025-04-29 11:17:14,187 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:17:14,195 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:17:14,195 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:17:14,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:17:14 BoogieIcfgContainer [2025-04-29 11:17:14,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:17:14,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:17:14,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:17:14,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:17:14,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:17:13" (1/3) ... [2025-04-29 11:17:14,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5a7269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:17:14, skipping insertion in model container [2025-04-29 11:17:14,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:13" (2/3) ... [2025-04-29 11:17:14,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5a7269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:17:14, skipping insertion in model container [2025-04-29 11:17:14,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:17:14" (3/3) ... [2025-04-29 11:17:14,201 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.c [2025-04-29 11:17:14,220 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:17:14,221 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0158_1-2.c that has 1 procedures, 25 locations, 26 edges, 1 initial locations, 0 loop locations, and 11 error locations. [2025-04-29 11:17:14,249 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:17:14,257 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;@609f2958, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:17:14,257 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-29 11:17:14,260 INFO L278 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 states have internal predecessors, (26), 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) [2025-04-29 11:17:14,263 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-29 11:17:14,263 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:14,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-29 11:17:14,263 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:14,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2025-04-29 11:17:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:17:14,273 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878757431] [2025-04-29 11:17:14,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:17:14,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:17:14,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:17:14,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:14,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:17:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:17:14,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:17:14,427 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878757431] [2025-04-29 11:17:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878757431] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:17:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:17:14,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:17:14,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151490267] [2025-04-29 11:17:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:17:14,431 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:17:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:17:14,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:17:14,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:17:14,448 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 states have internal predecessors, (26), 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) [2025-04-29 11:17:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:17:14,498 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2025-04-29 11:17:14,499 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:17:14,499 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 [2025-04-29 11:17:14,500 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:17:14,504 INFO L225 Difference]: With dead ends: 20 [2025-04-29 11:17:14,504 INFO L226 Difference]: Without dead ends: 18 [2025-04-29 11:17:14,505 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 [2025-04-29 11:17:14,507 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:17:14,507 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:17:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-04-29 11:17:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-04-29 11:17:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 states have internal predecessors, (19), 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) [2025-04-29 11:17:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2025-04-29 11:17:14,526 INFO L79 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2025-04-29 11:17:14,526 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:17:14,526 INFO L485 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2025-04-29 11:17:14,526 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) [2025-04-29 11:17:14,526 INFO L278 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2025-04-29 11:17:14,526 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-29 11:17:14,527 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:14,527 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-29 11:17:14,527 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:17:14,527 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:14,527 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2025-04-29 11:17:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:17:14,527 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918679351] [2025-04-29 11:17:14,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:17:14,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:17:14,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:17:14,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:14,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:17:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:17:14,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:17:14,599 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918679351] [2025-04-29 11:17:14,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918679351] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:17:14,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:17:14,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:17:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180462586] [2025-04-29 11:17:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:17:14,600 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:17:14,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:17:14,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:17:14,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:17:14,600 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2025-04-29 11:17:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:17:14,616 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2025-04-29 11:17:14,616 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:17:14,616 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 [2025-04-29 11:17:14,617 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:17:14,617 INFO L225 Difference]: With dead ends: 14 [2025-04-29 11:17:14,617 INFO L226 Difference]: Without dead ends: 14 [2025-04-29 11:17:14,617 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 [2025-04-29 11:17:14,617 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:17:14,618 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:17:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-04-29 11:17:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2025-04-29 11:17:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2025-04-29 11:17:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2025-04-29 11:17:14,619 INFO L79 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 3 [2025-04-29 11:17:14,619 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:17:14,619 INFO L485 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2025-04-29 11:17:14,619 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) [2025-04-29 11:17:14,619 INFO L278 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2025-04-29 11:17:14,619 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-29 11:17:14,619 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:14,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:17:14,619 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:17:14,620 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:14,620 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1114117971, now seen corresponding path program 1 times [2025-04-29 11:17:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:17:14,620 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553732699] [2025-04-29 11:17:14,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:17:14,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:17:14,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:17:14,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:14,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:17:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:17:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:17:14,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553732699] [2025-04-29 11:17:14,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553732699] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:17:14,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:17:14,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:17:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414902081] [2025-04-29 11:17:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:17:14,745 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:17:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:17:14,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:17:14,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:17:14,746 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-04-29 11:17:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:17:14,795 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2025-04-29 11:17:14,796 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:17:14,796 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-04-29 11:17:14,796 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:17:14,797 INFO L225 Difference]: With dead ends: 16 [2025-04-29 11:17:14,797 INFO L226 Difference]: Without dead ends: 16 [2025-04-29 11:17:14,797 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:17:14,798 INFO L437 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:17:14,798 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:17:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-04-29 11:17:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2025-04-29 11:17:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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) [2025-04-29 11:17:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-04-29 11:17:14,803 INFO L79 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2025-04-29 11:17:14,803 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:17:14,803 INFO L485 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-04-29 11:17:14,803 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-04-29 11:17:14,803 INFO L278 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-04-29 11:17:14,803 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-29 11:17:14,803 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:14,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:17:14,803 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:17:14,803 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:14,804 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1261881331, now seen corresponding path program 1 times [2025-04-29 11:17:14,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:17:14,804 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377568336] [2025-04-29 11:17:14,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:17:14,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:17:14,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:17:14,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:14,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:17:14,828 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:17:14,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:17:14,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:17:14,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:14,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:17:14,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:17:14,850 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:17:14,851 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2025-04-29 11:17:14,852 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2025-04-29 11:17:14,853 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2025-04-29 11:17:14,853 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 11 remaining) [2025-04-29 11:17:14,853 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:17:14,855 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:17:14,875 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:17:14,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:17:14 BoogieIcfgContainer [2025-04-29 11:17:14,879 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:17:14,879 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:17:14,880 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:17:14,880 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:17:14,881 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:17:14" (3/4) ... [2025-04-29 11:17:14,882 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-29 11:17:14,883 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:17:14,884 INFO L158 Benchmark]: Toolchain (without parser) took 1133.05ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 101.1MB in the end (delta: 7.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2025-04-29 11:17:14,885 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 201.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:14,885 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.99ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 95.7MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:17:14,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.24ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:14,887 INFO L158 Benchmark]: Boogie Preprocessor took 24.10ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 92.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:14,887 INFO L158 Benchmark]: RCFGBuilder took 214.50ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 81.0MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:17:14,888 INFO L158 Benchmark]: TraceAbstraction took 681.87ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 101.1MB in the end (delta: -21.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:14,888 INFO L158 Benchmark]: Witness Printer took 3.90ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 101.1MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:14,888 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 201.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.99ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 95.7MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.24ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.10ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 92.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 214.50ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 81.0MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 681.87ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 101.1MB in the end (delta: -21.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.90ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 101.1MB in the end (delta: 41.6kB). There was no memory consumed. 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 - UnprovableResult [Line: 9]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 9. Possible FailurePath: [L11-L20] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L23] data.p0 = malloc(37U) [L26] COND FALSE !(__VERIFIER_nondet_int()) [L29] data.str.p2 = 30 [L32] EXPR data.str.p2 [L32] COND FALSE !(25 > data.str.p2) [L37] return 0; [L37] return 0; VAL [\result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 26 edges, 11 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 29 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-29 11:17:14,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/list-ext-properties/test-0158_1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 d284b23884982d4b11f85b2ee1662e03201c2f0c0e0d0d5ca8c4610ecb36fc48 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:17:16,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:17:16,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-04-29 11:17:16,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:17:16,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:17:16,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:17:16,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:17:16,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:17:16,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:17:16,742 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:17:16,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:17:16,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:17:16,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:17:16,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:17:16,743 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:17:16,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:17:16,743 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:17:16,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:17:16,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:17:16,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:17:16,744 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:17:16,744 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:17:16,744 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:17:16,745 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:17:16,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:17:16,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:17:16,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:17:16,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:17:16,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:17:16,746 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-29 11:17:16,746 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-29 11:17:16,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:17:16,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:17:16,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:17:16,746 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 -> d284b23884982d4b11f85b2ee1662e03201c2f0c0e0d0d5ca8c4610ecb36fc48 [2025-04-29 11:17:16,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:17:16,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:17:16,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:17:16,971 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:17:16,973 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:17:16,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0158_1-2.c [2025-04-29 11:17:18,318 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce39758c/6eea6e9222ec48efa64314bad675cf9e/FLAGb9db494f8 [2025-04-29 11:17:18,526 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:17:18,527 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/test-0158_1-2.c [2025-04-29 11:17:18,528 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:17:18,528 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:17:18,533 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce39758c/6eea6e9222ec48efa64314bad675cf9e/FLAGb9db494f8 [2025-04-29 11:17:19,369 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce39758c/6eea6e9222ec48efa64314bad675cf9e [2025-04-29 11:17:19,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:17:19,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:17:19,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:17:19,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:17:19,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:17:19,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e34f764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19, skipping insertion in model container [2025-04-29 11:17:19,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:17:19,531 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:17:19,538 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:17:19,567 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:17:19,585 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:17:19,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19 WrapperNode [2025-04-29 11:17:19,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:17:19,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:17:19,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:17:19,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:17:19,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,617 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2025-04-29 11:17:19,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:17:19,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:17:19,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:17:19,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:17:19,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,635 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2025-04-29 11:17:19,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,644 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:17:19,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:17:19,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:17:19,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:17:19,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (1/1) ... [2025-04-29 11:17:19,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:17:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:17:19,678 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) [2025-04-29 11:17:19,680 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 [2025-04-29 11:17:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-29 11:17:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-29 11:17:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:17:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-04-29 11:17:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:17:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:17:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2025-04-29 11:17:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:17:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-04-29 11:17:19,747 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:17:19,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:17:19,894 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2025-04-29 11:17:19,894 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:17:19,901 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:17:19,901 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:17:19,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:17:19 BoogieIcfgContainer [2025-04-29 11:17:19,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:17:19,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:17:19,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:17:19,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:17:19,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:17:19" (1/3) ... [2025-04-29 11:17:19,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279f8a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:17:19, skipping insertion in model container [2025-04-29 11:17:19,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:17:19" (2/3) ... [2025-04-29 11:17:19,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279f8a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:17:19, skipping insertion in model container [2025-04-29 11:17:19,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:17:19" (3/3) ... [2025-04-29 11:17:19,909 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.c [2025-04-29 11:17:19,919 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:17:19,920 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0158_1-2.c that has 1 procedures, 25 locations, 26 edges, 1 initial locations, 0 loop locations, and 11 error locations. [2025-04-29 11:17:19,945 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:17:19,952 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;@1cf58922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:17:19,952 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-29 11:17:19,956 INFO L278 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 states have internal predecessors, (26), 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) [2025-04-29 11:17:19,959 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-29 11:17:19,959 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:19,960 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-29 11:17:19,961 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:19,964 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2025-04-29 11:17:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-29 11:17:19,972 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759710365] [2025-04-29 11:17:19,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:19,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:17:19,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:17:19,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-29 11:17:20,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:17:20,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:17:20,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:20,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:17:20,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-29 11:17:20,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:17:20,092 INFO L325 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-04-29 11:17:20,092 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-04-29 11:17:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:17:20,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:17:20,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-29 11:17:20,117 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759710365] [2025-04-29 11:17:20,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759710365] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:17:20,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:17:20,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:17:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257752657] [2025-04-29 11:17:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:17:20,123 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:17:20,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-29 11:17:20,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:17:20,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:17:20,138 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 states have internal predecessors, (26), 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) [2025-04-29 11:17:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:17:20,198 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2025-04-29 11:17:20,199 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:17:20,200 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 [2025-04-29 11:17:20,200 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:17:20,203 INFO L225 Difference]: With dead ends: 20 [2025-04-29 11:17:20,204 INFO L226 Difference]: Without dead ends: 18 [2025-04-29 11:17:20,205 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 [2025-04-29 11:17:20,206 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:17:20,206 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:17:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-04-29 11:17:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-04-29 11:17:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 states have internal predecessors, (19), 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) [2025-04-29 11:17:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2025-04-29 11:17:20,225 INFO L79 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2025-04-29 11:17:20,226 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:17:20,226 INFO L485 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2025-04-29 11:17:20,226 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) [2025-04-29 11:17:20,226 INFO L278 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2025-04-29 11:17:20,226 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-29 11:17:20,226 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:20,226 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-29 11:17:20,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-29 11:17:20,428 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:20,428 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:20,429 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2025-04-29 11:17:20,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-29 11:17:20,429 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262674932] [2025-04-29 11:17:20,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:20,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:20,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:17:20,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:17:20,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-29 11:17:20,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:17:20,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:17:20,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:20,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:17:20,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-29 11:17:20,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:17:20,486 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-29 11:17:20,487 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2025-04-29 11:17:20,500 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-04-29 11:17:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:17:20,520 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:17:20,520 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-29 11:17:20,520 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262674932] [2025-04-29 11:17:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262674932] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:17:20,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:17:20,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:17:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949248781] [2025-04-29 11:17:20,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:17:20,522 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:17:20,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-29 11:17:20,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:17:20,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:17:20,522 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2025-04-29 11:17:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:17:20,550 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2025-04-29 11:17:20,551 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:17:20,551 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 [2025-04-29 11:17:20,551 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:17:20,551 INFO L225 Difference]: With dead ends: 14 [2025-04-29 11:17:20,551 INFO L226 Difference]: Without dead ends: 14 [2025-04-29 11:17:20,552 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 [2025-04-29 11:17:20,553 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:17:20,553 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:17:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-04-29 11:17:20,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2025-04-29 11:17:20,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2025-04-29 11:17:20,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2025-04-29 11:17:20,556 INFO L79 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 3 [2025-04-29 11:17:20,556 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:17:20,556 INFO L485 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2025-04-29 11:17:20,557 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) [2025-04-29 11:17:20,557 INFO L278 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2025-04-29 11:17:20,557 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-29 11:17:20,557 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:20,557 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:17:20,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-29 11:17:20,757 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:20,758 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:20,758 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1114117971, now seen corresponding path program 1 times [2025-04-29 11:17:20,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-29 11:17:20,759 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733690301] [2025-04-29 11:17:20,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:20,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:20,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:17:20,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:17:20,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-29 11:17:20,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:17:20,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:17:20,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:20,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:17:20,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-29 11:17:20,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:17:20,812 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-04-29 11:17:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:17:20,834 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:17:20,834 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-29 11:17:20,834 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733690301] [2025-04-29 11:17:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733690301] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:17:20,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:17:20,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:17:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19896453] [2025-04-29 11:17:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:17:20,835 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:17:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-29 11:17:20,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:17:20,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:17:20,836 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-04-29 11:17:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:17:20,877 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2025-04-29 11:17:20,877 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:17:20,878 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-04-29 11:17:20,878 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:17:20,878 INFO L225 Difference]: With dead ends: 16 [2025-04-29 11:17:20,878 INFO L226 Difference]: Without dead ends: 16 [2025-04-29 11:17:20,878 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:17:20,878 INFO L437 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:17:20,879 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:17:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-04-29 11:17:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2025-04-29 11:17:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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) [2025-04-29 11:17:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-04-29 11:17:20,880 INFO L79 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2025-04-29 11:17:20,880 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:17:20,881 INFO L485 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-04-29 11:17:20,881 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-04-29 11:17:20,881 INFO L278 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-04-29 11:17:20,881 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-29 11:17:20,881 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:17:20,881 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:17:20,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-29 11:17:21,086 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:21,086 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-04-29 11:17:21,087 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:17:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1261881331, now seen corresponding path program 1 times [2025-04-29 11:17:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-29 11:17:21,087 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837822183] [2025-04-29 11:17:21,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:17:21,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:21,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:17:21,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:17:21,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-29 11:17:21,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:17:21,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:17:21,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:21,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:17:21,136 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:17:21,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:17:21,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:17:21,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:17:21,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:17:21,165 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-04-29 11:17:21,165 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:17:21,166 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2025-04-29 11:17:21,167 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2025-04-29 11:17:21,167 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2025-04-29 11:17:21,167 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2025-04-29 11:17:21,167 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2025-04-29 11:17:21,167 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2025-04-29 11:17:21,167 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2025-04-29 11:17:21,167 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2025-04-29 11:17:21,168 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2025-04-29 11:17:21,168 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2025-04-29 11:17:21,168 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 11 remaining) [2025-04-29 11:17:21,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-29 11:17:21,368 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:17:21,370 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:17:21,388 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:17:21,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:17:21 BoogieIcfgContainer [2025-04-29 11:17:21,392 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:17:21,393 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:17:21,393 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:17:21,393 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:17:21,393 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:17:19" (3/4) ... [2025-04-29 11:17:21,395 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-29 11:17:21,395 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:17:21,396 INFO L158 Benchmark]: Toolchain (without parser) took 2024.01ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 39.5MB in the end (delta: 36.8MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2025-04-29 11:17:21,396 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:21,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.63ms. Allocated memory is still 100.7MB. Free memory was 76.0MB in the beginning and 62.1MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:17:21,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.30ms. Allocated memory is still 100.7MB. Free memory was 61.9MB in the beginning and 60.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:21,397 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 100.7MB. Free memory was 60.6MB in the beginning and 58.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:21,398 INFO L158 Benchmark]: RCFGBuilder took 246.90ms. Allocated memory is still 100.7MB. Free memory was 58.9MB in the beginning and 46.6MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:17:21,398 INFO L158 Benchmark]: TraceAbstraction took 1489.47ms. Allocated memory is still 100.7MB. Free memory was 46.0MB in the beginning and 39.5MB in the end (delta: 6.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2025-04-29 11:17:21,398 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 100.7MB. Free memory was 39.5MB in the beginning and 39.5MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:17:21,399 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.63ms. Allocated memory is still 100.7MB. Free memory was 76.0MB in the beginning and 62.1MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.30ms. Allocated memory is still 100.7MB. Free memory was 61.9MB in the beginning and 60.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 100.7MB. Free memory was 60.6MB in the beginning and 58.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.90ms. Allocated memory is still 100.7MB. Free memory was 58.9MB in the beginning and 46.6MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1489.47ms. Allocated memory is still 100.7MB. Free memory was 46.0MB in the beginning and 39.5MB in the end (delta: 6.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 100.7MB. Free memory was 39.5MB in the beginning and 39.5MB in the end (delta: 29.7kB). There was no memory consumed. 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 - UnprovableResult [Line: 9]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 9. Possible FailurePath: [L11-L20] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L23] data.p0 = malloc(37U) [L26] COND FALSE !(__VERIFIER_nondet_int()) [L29] data.str.p2 = 30 [L32] EXPR data.str.p2 [L32] COND FALSE !(25 > data.str.p2) [L37] return 0; [L37] return 0; VAL [\result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 26 edges, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 29 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 1 QuantifiedInterpolants, 46 SizeOfPredicates, 5 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-29 11:17:21,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample