./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:08:19,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:08:19,160 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:08:19,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:08:19,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:08:19,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:08:19,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:08:19,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:08:19,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:08:19,177 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:08:19,177 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:08:19,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:08:19,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:08:19,178 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:08:19,179 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:08:19,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:08:19,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:08:19,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:08:19,180 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-jdk21/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 -> a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 [2025-02-06 10:08:19,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:08:19,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:08:19,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:08:19,390 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:08:19,390 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:08:19,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2025-02-06 10:08:20,545 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/81e1532ba/471ada895c954defb3f71b896d699dcb/FLAGad947c905 [2025-02-06 10:08:20,851 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:08:20,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2025-02-06 10:08:20,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/81e1532ba/471ada895c954defb3f71b896d699dcb/FLAGad947c905 [2025-02-06 10:08:20,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/81e1532ba/471ada895c954defb3f71b896d699dcb [2025-02-06 10:08:20,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:08:20,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:08:20,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:08:20,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:08:20,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:08:20,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:08:20" (1/1) ... [2025-02-06 10:08:20,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a54b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:20, skipping insertion in model container [2025-02-06 10:08:20,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:08:20" (1/1) ... [2025-02-06 10:08:20,943 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:08:21,197 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:08:21,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:08:21,210 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:08:21,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:08:21,265 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:08:21,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21 WrapperNode [2025-02-06 10:08:21,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:08:21,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:08:21,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:08:21,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:08:21,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,297 INFO L138 Inliner]: procedures = 119, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2025-02-06 10:08:21,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:08:21,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:08:21,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:08:21,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:08:21,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,317 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-02-06 10:08:21,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,323 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:08:21,334 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:08:21,334 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:08:21,334 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:08:21,335 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (1/1) ... [2025-02-06 10:08:21,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:08:21,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:21,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:08:21,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:08:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-02-06 10:08:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:08:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:08:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-02-06 10:08:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-02-06 10:08:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:08:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2025-02-06 10:08:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:08:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:08:21,518 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:08:21,522 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:08:21,655 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L575: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-02-06 10:08:21,662 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2025-02-06 10:08:21,662 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:08:21,668 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:08:21,668 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:08:21,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:08:21 BoogieIcfgContainer [2025-02-06 10:08:21,669 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:08:21,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:08:21,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:08:21,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:08:21,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:08:20" (1/3) ... [2025-02-06 10:08:21,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c74e9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:08:21, skipping insertion in model container [2025-02-06 10:08:21,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:08:21" (2/3) ... [2025-02-06 10:08:21,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c74e9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:08:21, skipping insertion in model container [2025-02-06 10:08:21,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:08:21" (3/3) ... [2025-02-06 10:08:21,676 INFO L128 eAbstractionObserver]: Analyzing ICFG array-realloc-2.i [2025-02-06 10:08:21,685 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:08:21,686 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array-realloc-2.i that has 1 procedures, 36 locations, 1 initial locations, 1 loop locations, and 14 error locations. [2025-02-06 10:08:21,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:08:21,732 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d5fd515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:08:21,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-06 10:08:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:08:21,738 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:21,738 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:08:21,738 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:21,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2492474, now seen corresponding path program 1 times [2025-02-06 10:08:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370275004] [2025-02-06 10:08:21,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:21,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:08:21,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:08:21,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:21,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:21,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370275004] [2025-02-06 10:08:21,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370275004] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:21,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:21,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:08:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523707773] [2025-02-06 10:08:21,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:21,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:08:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:21,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:08:21,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:08:21,921 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:21,980 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2025-02-06 10:08:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:08:21,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 10:08:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:21,987 INFO L225 Difference]: With dead ends: 52 [2025-02-06 10:08:21,987 INFO L226 Difference]: Without dead ends: 50 [2025-02-06 10:08:21,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:08:21,991 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:21,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-06 10:08:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2025-02-06 10:08:22,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2025-02-06 10:08:22,017 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 4 [2025-02-06 10:08:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,017 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2025-02-06 10:08:22,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2025-02-06 10:08:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:08:22,017 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,018 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:08:22,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:08:22,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2492475, now seen corresponding path program 1 times [2025-02-06 10:08:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338414875] [2025-02-06 10:08:22,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:08:22,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:08:22,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338414875] [2025-02-06 10:08:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338414875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:08:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036929080] [2025-02-06 10:08:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:08:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:08:22,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:08:22,162 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,191 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2025-02-06 10:08:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:08:22,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 10:08:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,193 INFO L225 Difference]: With dead ends: 51 [2025-02-06 10:08:22,194 INFO L226 Difference]: Without dead ends: 51 [2025-02-06 10:08:22,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:08:22,194 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 47 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-06 10:08:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2025-02-06 10:08:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 45 states have internal predecessors, (61), 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) [2025-02-06 10:08:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2025-02-06 10:08:22,211 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 4 [2025-02-06 10:08:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,211 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2025-02-06 10:08:22,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2025-02-06 10:08:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:08:22,212 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,212 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:08:22,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:08:22,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2492370, now seen corresponding path program 1 times [2025-02-06 10:08:22,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783943801] [2025-02-06 10:08:22,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:08:22,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:08:22,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783943801] [2025-02-06 10:08:22,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783943801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:08:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643920191] [2025-02-06 10:08:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:08:22,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:08:22,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:08:22,238 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,259 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2025-02-06 10:08:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:08:22,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 10:08:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,260 INFO L225 Difference]: With dead ends: 47 [2025-02-06 10:08:22,260 INFO L226 Difference]: Without dead ends: 46 [2025-02-06 10:08:22,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:08:22,260 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-06 10:08:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-02-06 10:08:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 45 states have internal predecessors, (60), 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) [2025-02-06 10:08:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2025-02-06 10:08:22,263 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 4 [2025-02-06 10:08:22,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,264 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2025-02-06 10:08:22,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2025-02-06 10:08:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:08:22,264 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,264 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:08:22,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 10:08:22,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1899699533, now seen corresponding path program 1 times [2025-02-06 10:08:22,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888286468] [2025-02-06 10:08:22,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:08:22,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:08:22,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888286468] [2025-02-06 10:08:22,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888286468] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:08:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104694604] [2025-02-06 10:08:22,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:08:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:08:22,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:22,297 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2025-02-06 10:08:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,340 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2025-02-06 10:08:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:08:22,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2025-02-06 10:08:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,341 INFO L225 Difference]: With dead ends: 58 [2025-02-06 10:08:22,341 INFO L226 Difference]: Without dead ends: 58 [2025-02-06 10:08:22,341 INFO L434 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 [2025-02-06 10:08:22,342 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 75 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-06 10:08:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2025-02-06 10:08:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 45 states have internal predecessors, (59), 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) [2025-02-06 10:08:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2025-02-06 10:08:22,344 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 6 [2025-02-06 10:08:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,346 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2025-02-06 10:08:22,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2025-02-06 10:08:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2025-02-06 10:08:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:08:22,348 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,348 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:22,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:08:22,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1238859662, now seen corresponding path program 1 times [2025-02-06 10:08:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755149971] [2025-02-06 10:08:22,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:08:22,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:08:22,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755149971] [2025-02-06 10:08:22,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755149971] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:08:22,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212451484] [2025-02-06 10:08:22,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:08:22,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:08:22,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:22,415 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-02-06 10:08:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,480 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2025-02-06 10:08:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:08:22,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2025-02-06 10:08:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,481 INFO L225 Difference]: With dead ends: 56 [2025-02-06 10:08:22,481 INFO L226 Difference]: Without dead ends: 56 [2025-02-06 10:08:22,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:08:22,481 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 42 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-06 10:08:22,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2025-02-06 10:08:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 48 states have internal predecessors, (64), 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) [2025-02-06 10:08:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2025-02-06 10:08:22,484 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 7 [2025-02-06 10:08:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,485 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2025-02-06 10:08:22,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-02-06 10:08:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2025-02-06 10:08:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:08:22,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,485 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:22,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 10:08:22,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1238859663, now seen corresponding path program 1 times [2025-02-06 10:08:22,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144909266] [2025-02-06 10:08:22,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:08:22,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:08:22,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144909266] [2025-02-06 10:08:22,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144909266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:08:22,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24601178] [2025-02-06 10:08:22,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:08:22,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:08:22,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:08:22,549 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2025-02-06 10:08:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,599 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2025-02-06 10:08:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:08:22,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2025-02-06 10:08:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,600 INFO L225 Difference]: With dead ends: 52 [2025-02-06 10:08:22,600 INFO L226 Difference]: Without dead ends: 52 [2025-02-06 10:08:22,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:08:22,600 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 68 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-06 10:08:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2025-02-06 10:08:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 49 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2025-02-06 10:08:22,606 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 7 [2025-02-06 10:08:22,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,606 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2025-02-06 10:08:22,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2025-02-06 10:08:22,606 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2025-02-06 10:08:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 10:08:22,607 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,607 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:22,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 10:08:22,607 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 837548717, now seen corresponding path program 1 times [2025-02-06 10:08:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994927302] [2025-02-06 10:08:22,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:08:22,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:08:22,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994927302] [2025-02-06 10:08:22,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994927302] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:08:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810432543] [2025-02-06 10:08:22,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:08:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:08:22,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:22,658 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-02-06 10:08:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,671 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2025-02-06 10:08:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:08:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2025-02-06 10:08:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,672 INFO L225 Difference]: With dead ends: 48 [2025-02-06 10:08:22,673 INFO L226 Difference]: Without dead ends: 48 [2025-02-06 10:08:22,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:22,673 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 55 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-06 10:08:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-02-06 10:08:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 47 states have internal predecessors, (62), 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) [2025-02-06 10:08:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2025-02-06 10:08:22,679 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 9 [2025-02-06 10:08:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,679 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2025-02-06 10:08:22,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-02-06 10:08:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2025-02-06 10:08:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:08:22,679 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,679 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:22,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 10:08:22,679 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash -294931412, now seen corresponding path program 1 times [2025-02-06 10:08:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628015970] [2025-02-06 10:08:22,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:08:22,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:08:22,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628015970] [2025-02-06 10:08:22,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628015970] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:08:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027636778] [2025-02-06 10:08:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:08:22,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:08:22,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:22,755 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-02-06 10:08:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,793 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2025-02-06 10:08:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:08:22,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-02-06 10:08:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,795 INFO L225 Difference]: With dead ends: 47 [2025-02-06 10:08:22,795 INFO L226 Difference]: Without dead ends: 47 [2025-02-06 10:08:22,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:22,795 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-06 10:08:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2025-02-06 10:08:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 46 states have internal predecessors, (59), 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) [2025-02-06 10:08:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2025-02-06 10:08:22,797 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 12 [2025-02-06 10:08:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,797 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2025-02-06 10:08:22,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-02-06 10:08:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2025-02-06 10:08:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:08:22,800 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,800 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:22,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 10:08:22,800 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,801 INFO L85 PathProgramCache]: Analyzing trace with hash -294931411, now seen corresponding path program 1 times [2025-02-06 10:08:22,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428895831] [2025-02-06 10:08:22,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:08:22,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:08:22,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:22,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428895831] [2025-02-06 10:08:22,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428895831] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:22,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:22,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:08:22,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173306969] [2025-02-06 10:08:22,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:22,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:08:22,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:22,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:08:22,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:08:22,910 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2025-02-06 10:08:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:22,968 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-02-06 10:08:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:08:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2025-02-06 10:08:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:22,968 INFO L225 Difference]: With dead ends: 38 [2025-02-06 10:08:22,968 INFO L226 Difference]: Without dead ends: 38 [2025-02-06 10:08:22,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:08:22,969 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:22,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-06 10:08:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-02-06 10:08:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 37 states have internal predecessors, (43), 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) [2025-02-06 10:08:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2025-02-06 10:08:22,970 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 12 [2025-02-06 10:08:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:22,970 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2025-02-06 10:08:22,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2025-02-06 10:08:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2025-02-06 10:08:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:08:22,971 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:22,971 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:22,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:08:22,971 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:22,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:22,971 INFO L85 PathProgramCache]: Analyzing trace with hash -294871829, now seen corresponding path program 1 times [2025-02-06 10:08:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:22,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725636263] [2025-02-06 10:08:22,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:22,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:22,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:08:22,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:08:22,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:22,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725636263] [2025-02-06 10:08:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725636263] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:23,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:23,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:08:23,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905912008] [2025-02-06 10:08:23,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:23,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:08:23,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:23,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:08:23,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:08:23,114 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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) [2025-02-06 10:08:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:23,193 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2025-02-06 10:08:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:08:23,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2025-02-06 10:08:23,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:23,194 INFO L225 Difference]: With dead ends: 58 [2025-02-06 10:08:23,194 INFO L226 Difference]: Without dead ends: 58 [2025-02-06 10:08:23,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:08:23,195 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:23,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 103 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-06 10:08:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2025-02-06 10:08:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2025-02-06 10:08:23,197 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 12 [2025-02-06 10:08:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:23,199 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2025-02-06 10:08:23,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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) [2025-02-06 10:08:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2025-02-06 10:08:23,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:08:23,200 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:23,200 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:23,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 10:08:23,200 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:23,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash -551093336, now seen corresponding path program 1 times [2025-02-06 10:08:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:23,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663324648] [2025-02-06 10:08:23,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:23,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:23,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:08:23,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:08:23,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:23,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:23,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:23,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663324648] [2025-02-06 10:08:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663324648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:23,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:08:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675705710] [2025-02-06 10:08:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:23,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:08:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:23,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:08:23,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:23,229 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-02-06 10:08:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:23,241 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2025-02-06 10:08:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:08:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2025-02-06 10:08:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:23,241 INFO L225 Difference]: With dead ends: 41 [2025-02-06 10:08:23,241 INFO L226 Difference]: Without dead ends: 41 [2025-02-06 10:08:23,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:08:23,246 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:23,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-06 10:08:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-02-06 10:08:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 40 states have internal predecessors, (44), 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) [2025-02-06 10:08:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2025-02-06 10:08:23,247 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2025-02-06 10:08:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:23,247 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2025-02-06 10:08:23,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-02-06 10:08:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2025-02-06 10:08:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:08:23,248 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:23,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:23,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 10:08:23,248 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:23,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash -551092151, now seen corresponding path program 1 times [2025-02-06 10:08:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:23,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261567723] [2025-02-06 10:08:23,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:23,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:08:23,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:08:23,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:23,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:23,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261567723] [2025-02-06 10:08:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261567723] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:23,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 10:08:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61836915] [2025-02-06 10:08:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:23,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 10:08:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:23,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 10:08:23,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:08:23,407 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2025-02-06 10:08:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:23,502 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2025-02-06 10:08:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:08:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 13 [2025-02-06 10:08:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:23,503 INFO L225 Difference]: With dead ends: 43 [2025-02-06 10:08:23,503 INFO L226 Difference]: Without dead ends: 43 [2025-02-06 10:08:23,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:08:23,504 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:23,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 83 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-06 10:08:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2025-02-06 10:08:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 40 states have internal predecessors, (44), 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) [2025-02-06 10:08:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2025-02-06 10:08:23,505 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2025-02-06 10:08:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:23,506 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2025-02-06 10:08:23,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2025-02-06 10:08:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2025-02-06 10:08:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:08:23,506 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:23,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:23,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 10:08:23,506 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:23,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash -551092150, now seen corresponding path program 1 times [2025-02-06 10:08:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940046919] [2025-02-06 10:08:23,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:23,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:08:23,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:08:23,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:23,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940046919] [2025-02-06 10:08:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940046919] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:23,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:23,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:08:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338931779] [2025-02-06 10:08:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:23,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:08:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:23,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:08:23,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:08:23,606 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2025-02-06 10:08:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:23,653 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2025-02-06 10:08:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:08:23,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2025-02-06 10:08:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:23,654 INFO L225 Difference]: With dead ends: 38 [2025-02-06 10:08:23,654 INFO L226 Difference]: Without dead ends: 38 [2025-02-06 10:08:23,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:08:23,654 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:23,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-06 10:08:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-02-06 10:08:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2025-02-06 10:08:23,656 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 13 [2025-02-06 10:08:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:23,656 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2025-02-06 10:08:23,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2025-02-06 10:08:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2025-02-06 10:08:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:08:23,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:23,656 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:23,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 10:08:23,656 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:23,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:23,659 INFO L85 PathProgramCache]: Analyzing trace with hash -140174299, now seen corresponding path program 1 times [2025-02-06 10:08:23,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:23,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054239445] [2025-02-06 10:08:23,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:23,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:23,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:08:23,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:08:23,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:23,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:23,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054239445] [2025-02-06 10:08:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054239445] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521030085] [2025-02-06 10:08:23,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:23,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:23,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:23,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:23,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:08:23,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:08:23,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:08:23,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:23,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:23,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:08:23,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:23,905 INFO L349 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2025-02-06 10:08:23,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 25 [2025-02-06 10:08:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:24,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:24,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521030085] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:24,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:24,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 10 [2025-02-06 10:08:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770658101] [2025-02-06 10:08:24,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:24,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:08:24,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:24,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:08:24,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:08:24,090 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:24,117 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2025-02-06 10:08:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:08:24,117 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-06 10:08:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:24,118 INFO L225 Difference]: With dead ends: 39 [2025-02-06 10:08:24,118 INFO L226 Difference]: Without dead ends: 39 [2025-02-06 10:08:24,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:08:24,118 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:24,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 28 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-06 10:08:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2025-02-06 10:08:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 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) [2025-02-06 10:08:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2025-02-06 10:08:24,120 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 17 [2025-02-06 10:08:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:24,120 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2025-02-06 10:08:24,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2025-02-06 10:08:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:08:24,120 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:24,120 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:24,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 10:08:24,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 10:08:24,322 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:24,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash -50435995, now seen corresponding path program 1 times [2025-02-06 10:08:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:24,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829077779] [2025-02-06 10:08:24,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:24,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:24,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:08:24,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:08:24,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:24,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:24,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829077779] [2025-02-06 10:08:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829077779] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522548857] [2025-02-06 10:08:24,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:24,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:24,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:08:24,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:08:24,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:08:24,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:24,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:24,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:08:24,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:24,704 INFO L378 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 11 treesize of output 7 [2025-02-06 10:08:24,766 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:08:24,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:08:24,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2025-02-06 10:08:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:24,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:24,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 24 [2025-02-06 10:08:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:25,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522548857] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:25,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:25,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 19 [2025-02-06 10:08:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560686822] [2025-02-06 10:08:25,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:25,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 10:08:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:25,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 10:08:25,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:08:25,011 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 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) [2025-02-06 10:08:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:25,327 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2025-02-06 10:08:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 10:08:25,328 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 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 18 [2025-02-06 10:08:25,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:25,328 INFO L225 Difference]: With dead ends: 41 [2025-02-06 10:08:25,328 INFO L226 Difference]: Without dead ends: 41 [2025-02-06 10:08:25,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2025-02-06 10:08:25,329 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:25,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 76 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-06 10:08:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2025-02-06 10:08:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 35 states have internal predecessors, (38), 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) [2025-02-06 10:08:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2025-02-06 10:08:25,331 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2025-02-06 10:08:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:25,331 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2025-02-06 10:08:25,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 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) [2025-02-06 10:08:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2025-02-06 10:08:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 10:08:25,331 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:25,331 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:25,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 10:08:25,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 10:08:25,536 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:25,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1563515869, now seen corresponding path program 1 times [2025-02-06 10:08:25,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:25,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750019095] [2025-02-06 10:08:25,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:25,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:25,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 10:08:25,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 10:08:25,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:25,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:25,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750019095] [2025-02-06 10:08:25,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750019095] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648546545] [2025-02-06 10:08:25,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:25,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:25,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:25,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:25,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:08:25,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 10:08:25,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 10:08:25,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:25,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:25,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:08:25,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:25,831 INFO L378 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 15 treesize of output 1 [2025-02-06 10:08:25,880 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:08:25,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:08:25,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 12 [2025-02-06 10:08:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:25,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:25,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 24 [2025-02-06 10:08:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648546545] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:25,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:25,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 13 [2025-02-06 10:08:25,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811088461] [2025-02-06 10:08:25,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:25,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:08:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:25,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:08:25,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:08:25,964 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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) [2025-02-06 10:08:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:26,099 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2025-02-06 10:08:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:08:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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 19 [2025-02-06 10:08:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:26,099 INFO L225 Difference]: With dead ends: 36 [2025-02-06 10:08:26,100 INFO L226 Difference]: Without dead ends: 36 [2025-02-06 10:08:26,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:08:26,100 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:26,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 41 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-06 10:08:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2025-02-06 10:08:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 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) [2025-02-06 10:08:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2025-02-06 10:08:26,102 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 19 [2025-02-06 10:08:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:26,102 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2025-02-06 10:08:26,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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) [2025-02-06 10:08:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2025-02-06 10:08:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 10:08:26,102 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:26,102 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:26,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:08:26,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:26,307 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:26,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1224351709, now seen corresponding path program 1 times [2025-02-06 10:08:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095018031] [2025-02-06 10:08:26,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:26,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:08:26,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:08:26,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:26,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:26,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:26,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095018031] [2025-02-06 10:08:26,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095018031] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:26,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711337571] [2025-02-06 10:08:26,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:26,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:26,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:26,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:26,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:08:26,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:08:26,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:08:26,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:26,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:26,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:08:26,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:26,558 INFO L378 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 15 treesize of output 1 [2025-02-06 10:08:26,606 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:08:26,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:08:26,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 12 [2025-02-06 10:08:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:26,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:26,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 28 [2025-02-06 10:08:26,654 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 10:08:26,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2025-02-06 10:08:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:26,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711337571] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:26,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:26,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2025-02-06 10:08:26,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671005683] [2025-02-06 10:08:26,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:26,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:08:26,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:26,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:08:26,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:08:26,693 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:26,760 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2025-02-06 10:08:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:08:26,760 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-06 10:08:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:26,760 INFO L225 Difference]: With dead ends: 35 [2025-02-06 10:08:26,760 INFO L226 Difference]: Without dead ends: 35 [2025-02-06 10:08:26,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:08:26,761 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:26,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 46 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:26,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-06 10:08:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2025-02-06 10:08:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 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) [2025-02-06 10:08:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2025-02-06 10:08:26,762 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 20 [2025-02-06 10:08:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:26,763 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2025-02-06 10:08:26,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2025-02-06 10:08:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:08:26,763 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:26,763 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:26,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 10:08:26,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 10:08:26,964 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:26,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1543910539, now seen corresponding path program 1 times [2025-02-06 10:08:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:26,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040751092] [2025-02-06 10:08:26,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:26,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:26,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:08:26,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:08:26,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:26,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:27,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:27,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040751092] [2025-02-06 10:08:27,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040751092] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:08:27,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:08:27,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:08:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701316168] [2025-02-06 10:08:27,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:08:27,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:08:27,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:27,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:08:27,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:08:27,079 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:27,121 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2025-02-06 10:08:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:08:27,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:08:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:27,122 INFO L225 Difference]: With dead ends: 31 [2025-02-06 10:08:27,122 INFO L226 Difference]: Without dead ends: 31 [2025-02-06 10:08:27,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:08:27,122 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:27,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:08:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-02-06 10:08:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2025-02-06 10:08:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 30 states have internal predecessors, (31), 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) [2025-02-06 10:08:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2025-02-06 10:08:27,124 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 21 [2025-02-06 10:08:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:27,124 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2025-02-06 10:08:27,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2025-02-06 10:08:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:08:27,124 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:27,124 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:27,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 10:08:27,124 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:27,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1543850957, now seen corresponding path program 1 times [2025-02-06 10:08:27,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:27,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053810442] [2025-02-06 10:08:27,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:27,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:27,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:08:27,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:08:27,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:27,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:27,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:27,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053810442] [2025-02-06 10:08:27,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053810442] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:27,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389644359] [2025-02-06 10:08:27,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:27,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:27,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:27,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:27,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:08:27,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:08:27,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:08:27,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:27,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:27,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:08:27,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:27,366 INFO L378 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 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 10:08:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:27,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:27,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389644359] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:27,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:27,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-02-06 10:08:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570067454] [2025-02-06 10:08:27,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:27,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:08:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:27,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:08:27,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:08:27,511 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 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) [2025-02-06 10:08:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:27,833 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2025-02-06 10:08:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 10:08:27,834 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:08:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:27,834 INFO L225 Difference]: With dead ends: 108 [2025-02-06 10:08:27,834 INFO L226 Difference]: Without dead ends: 108 [2025-02-06 10:08:27,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2025-02-06 10:08:27,835 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 114 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:27,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 201 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-06 10:08:27,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 66. [2025-02-06 10:08:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 65 states have internal predecessors, (73), 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) [2025-02-06 10:08:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2025-02-06 10:08:27,837 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 21 [2025-02-06 10:08:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:27,838 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2025-02-06 10:08:27,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 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) [2025-02-06 10:08:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2025-02-06 10:08:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:08:27,838 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:27,838 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:27,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 10:08:28,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:28,039 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:28,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash 699802655, now seen corresponding path program 1 times [2025-02-06 10:08:28,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:28,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512564844] [2025-02-06 10:08:28,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:28,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:08:28,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:08:28,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:28,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:28,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512564844] [2025-02-06 10:08:28,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512564844] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929348154] [2025-02-06 10:08:28,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:08:28,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:28,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:28,274 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:28,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 10:08:28,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:08:28,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:08:28,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:08:28,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:28,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-06 10:08:28,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:28,444 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:08:28,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2025-02-06 10:08:28,675 INFO L378 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 15 treesize of output 1 [2025-02-06 10:08:28,811 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:08:28,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2025-02-06 10:08:28,897 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_18| Int) (|v_ULTIMATE.start_main_~#a~0#1.base_20| Int) (|v_ULTIMATE.start_main_#t~mem8#1.base_12| Int)) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_20| 1))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_20|) 0) (= (select .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_18|) 0) (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_18| 0) |v_ULTIMATE.start_main_#t~mem8#1.base_12| 0) |v_ULTIMATE.start_main_~#a~0#1.base_20| 0)) (= (select (store .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_18| 0) |v_ULTIMATE.start_main_#t~mem8#1.base_12|) 0)))) is different from true [2025-02-06 10:08:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:28,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:28,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 44 [2025-02-06 10:08:45,224 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#valid| |c_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base| 0))) (let ((.cse3 (= |c_ULTIMATE.start_main_~#a~0#1.offset| |c_ULTIMATE.start_expandArray_~pointer#1.offset|)) (.cse2 (forall ((v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| Int) (v_arrayElimCell_15 Int) (v_ArrVal_404 Int)) (or (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store (store .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| v_ArrVal_404) v_arrayElimCell_15 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (not (= (select .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22|) 0))))) (.cse4 (= |c_ULTIMATE.start_expandArray_~pointer#1.base| |c_ULTIMATE.start_main_~#a~0#1.base|))) (and (forall ((|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| Int)) (or (not (= (select .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22|) 0)) (forall ((v_antiDerIndex_entry0_1 Int) (v_ArrVal_404 Int)) (let ((.cse1 (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1))) (or (= .cse1 (select (store (store .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (forall ((v_arrayElimCell_15 Int)) (= .cse1 (select (store (store (store .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| v_ArrVal_404) v_arrayElimCell_15 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)))))))) (or .cse2 .cse3) (or (not .cse3) (forall ((v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| Int)) (or (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (not (= (select .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22|) 0)))) (not .cse4)) (or .cse2 .cse4)))) is different from false [2025-02-06 10:08:49,276 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (store |c_#valid| |c_ULTIMATE.start_expandArray_#t~mem2#1.base| 0))) (let ((.cse1 (= |c_ULTIMATE.start_main_~#a~0#1.offset| |c_ULTIMATE.start_expandArray_~pointer#1.offset|)) (.cse2 (= |c_ULTIMATE.start_expandArray_~pointer#1.base| |c_ULTIMATE.start_main_~#a~0#1.base|)) (.cse0 (forall ((v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| Int) (v_arrayElimCell_15 Int) (v_ArrVal_404 Int)) (or (not (= (select .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22|) 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| v_ArrVal_404) v_arrayElimCell_15 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)))))) (and (or .cse0 .cse1) (or (not .cse1) (not .cse2) (forall ((v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| Int)) (or (not (= (select .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22|) 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1))))) (forall ((|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| Int)) (or (not (= (select .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22|) 0)) (forall ((v_antiDerIndex_entry0_1 Int) (v_ArrVal_404 Int)) (let ((.cse4 (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1))) (or (= .cse4 (select (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (forall ((v_arrayElimCell_15 Int)) (= .cse4 (select (store (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_22| v_ArrVal_404) v_arrayElimCell_15 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)))))))) (or .cse2 .cse0)))) is different from false [2025-02-06 10:08:49,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:08:49,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 205 treesize of output 177 [2025-02-06 10:08:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929348154] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:49,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:49,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 25 [2025-02-06 10:08:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444019228] [2025-02-06 10:08:49,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:49,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 10:08:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:49,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 10:08:49,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=439, Unknown=6, NotChecked=132, Total=650 [2025-02-06 10:08:49,969 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 26 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 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) [2025-02-06 10:08:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:50,848 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2025-02-06 10:08:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:08:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:08:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:50,849 INFO L225 Difference]: With dead ends: 64 [2025-02-06 10:08:50,850 INFO L226 Difference]: Without dead ends: 58 [2025-02-06 10:08:50,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=149, Invalid=787, Unknown=6, NotChecked=180, Total=1122 [2025-02-06 10:08:50,851 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:50,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 64 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 70 Unchecked, 0.3s Time] [2025-02-06 10:08:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-06 10:08:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-02-06 10:08:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2025-02-06 10:08:50,854 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 21 [2025-02-06 10:08:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:50,854 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2025-02-06 10:08:50,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 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) [2025-02-06 10:08:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2025-02-06 10:08:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-06 10:08:50,855 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:50,855 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:50,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 10:08:51,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:51,056 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:51,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1453838899, now seen corresponding path program 2 times [2025-02-06 10:08:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:51,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840127582] [2025-02-06 10:08:51,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:08:51,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:51,076 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-06 10:08:51,138 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-06 10:08:51,138 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:08:51,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840127582] [2025-02-06 10:08:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840127582] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648098450] [2025-02-06 10:08:51,447 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:08:51,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:51,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:51,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:51,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 10:08:51,534 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-06 10:08:51,589 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-06 10:08:51,589 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:08:51,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:51,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 10:08:51,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:51,678 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 10:08:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:51,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:08:52,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648098450] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:52,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:52,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2025-02-06 10:08:52,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460333834] [2025-02-06 10:08:52,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:52,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:08:52,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:52,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:08:52,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:08:52,108 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 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) [2025-02-06 10:08:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:53,541 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2025-02-06 10:08:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-06 10:08:53,542 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 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 57 [2025-02-06 10:08:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:53,542 INFO L225 Difference]: With dead ends: 133 [2025-02-06 10:08:53,542 INFO L226 Difference]: Without dead ends: 133 [2025-02-06 10:08:53,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=876, Invalid=3414, Unknown=0, NotChecked=0, Total=4290 [2025-02-06 10:08:53,544 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:53,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 158 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:08:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-02-06 10:08:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2025-02-06 10:08:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0077519379844961) internal successors, (130), 129 states have internal predecessors, (130), 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) [2025-02-06 10:08:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2025-02-06 10:08:53,547 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 57 [2025-02-06 10:08:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:53,547 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2025-02-06 10:08:53,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 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) [2025-02-06 10:08:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2025-02-06 10:08:53,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-06 10:08:53,549 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:08:53,549 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:53,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 10:08:53,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:53,754 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-02-06 10:08:53,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:08:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash -732099021, now seen corresponding path program 3 times [2025-02-06 10:08:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:08:53,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68200785] [2025-02-06 10:08:53,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:08:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:08:53,785 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 129 statements into 14 equivalence classes. [2025-02-06 10:08:53,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 129 statements. [2025-02-06 10:08:53,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:08:53,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 73 proven. 78 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2025-02-06 10:08:53,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:08:53,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68200785] [2025-02-06 10:08:53,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68200785] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:08:53,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813002362] [2025-02-06 10:08:53,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:08:53,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:08:53,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:08:53,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:08:54,084 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 129 statements into 14 equivalence classes. [2025-02-06 10:08:54,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 129 statements. [2025-02-06 10:08:54,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:08:54,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:08:54,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:08:54,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:08:54,295 INFO L378 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 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-06 10:08:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 73 proven. 78 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2025-02-06 10:08:54,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:08:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2025-02-06 10:08:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813002362] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:08:54,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:08:54,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2025-02-06 10:08:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785397481] [2025-02-06 10:08:54,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:08:54,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:08:54,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:08:54,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:08:54,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:08:54,819 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 24 states have internal predecessors, (62), 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) [2025-02-06 10:08:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:08:55,061 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2025-02-06 10:08:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:08:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 24 states have internal predecessors, (62), 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 129 [2025-02-06 10:08:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:08:55,064 INFO L225 Difference]: With dead ends: 129 [2025-02-06 10:08:55,064 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 10:08:55,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 10:08:55,065 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:08:55,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 38 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:08:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 10:08:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 10:08:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:08:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 10:08:55,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2025-02-06 10:08:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:08:55,065 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 10:08:55,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 24 states have internal predecessors, (62), 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) [2025-02-06 10:08:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 10:08:55,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 10:08:55,067 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (12 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (11 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (10 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2025-02-06 10:08:55,069 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-02-06 10:08:55,070 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-02-06 10:08:55,070 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-02-06 10:08:55,070 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-02-06 10:08:55,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 10:08:55,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:08:55,273 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:08:55,275 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 10:08:55,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 10:08:55 BoogieIcfgContainer [2025-02-06 10:08:55,278 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 10:08:55,279 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 10:08:55,279 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 10:08:55,279 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 10:08:55,279 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:08:21" (3/4) ... [2025-02-06 10:08:55,281 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 10:08:55,288 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-06 10:08:55,288 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-06 10:08:55,288 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-06 10:08:55,347 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 10:08:55,348 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 10:08:55,348 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 10:08:55,349 INFO L158 Benchmark]: Toolchain (without parser) took 34460.27ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 111.1MB in the beginning and 217.2MB in the end (delta: -106.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2025-02-06 10:08:55,349 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:08:55,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.14ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 94.0MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:08:55,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.10ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 92.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:08:55,350 INFO L158 Benchmark]: Boogie Preprocessor took 34.31ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:08:55,350 INFO L158 Benchmark]: IcfgBuilder took 335.15ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 75.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:08:55,350 INFO L158 Benchmark]: TraceAbstraction took 33607.48ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 74.6MB in the beginning and 222.1MB in the end (delta: -147.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:08:55,350 INFO L158 Benchmark]: Witness Printer took 69.02ms. Allocated memory is still 268.4MB. Free memory was 222.1MB in the beginning and 217.2MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 10:08:55,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.14ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 94.0MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.10ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 92.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.31ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 335.15ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 75.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 33607.48ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 74.6MB in the beginning and 222.1MB in the end (delta: -147.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.02ms. Allocated memory is still 268.4MB. Free memory was 222.1MB in the beginning and 217.2MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 570]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 581]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 581]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 33.6s, OverallIterations: 22, TraceHistogramMax: 14, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 609 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 609 mSDsluCounter, 1586 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 70 IncrementalHoareTripleChecker+Unchecked, 1128 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2261 IncrementalHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 458 mSDtfsCounter, 2261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 812 GetRequests, 526 SyntacticMatches, 7 SemanticMatches, 279 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=21, InterpolantAutomatonStates: 216, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 105 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 741 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1005 ConstructedInterpolants, 37 QuantifiedInterpolants, 8964 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1664 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 38 InterpolantComputations, 14 PerfectInterpolantSequences, 2079/2797 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 10:08:55,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE