./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loop-acceleration/array3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loop-acceleration/array3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 08:01:58,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 08:01:59,046 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 08:01:59,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 08:01:59,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 08:01:59,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 08:01:59,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 08:01:59,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 08:01:59,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 08:01:59,081 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 08:01:59,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 08:01:59,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 08:01:59,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 08:01:59,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 08:01:59,082 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 08:01:59,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 08:01:59,082 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 08:01:59,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 08:01:59,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 08:01:59,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 08:01:59,083 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 08:01:59,083 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 08:01:59,083 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 08:01:59,084 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 08:01:59,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 08:01:59,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 08:01:59,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 08:01:59,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 08:01:59,085 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea [2025-03-04 08:01:59,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 08:01:59,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 08:01:59,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 08:01:59,290 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 08:01:59,291 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 08:01:59,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array3.i [2025-03-04 08:02:00,403 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f20320aa/2a7952eab7db4f02b1550283ad1b1854/FLAG71a1b4b32 [2025-03-04 08:02:00,641 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 08:02:00,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i [2025-03-04 08:02:00,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f20320aa/2a7952eab7db4f02b1550283ad1b1854/FLAG71a1b4b32 [2025-03-04 08:02:00,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f20320aa/2a7952eab7db4f02b1550283ad1b1854 [2025-03-04 08:02:00,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 08:02:00,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 08:02:00,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 08:02:00,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 08:02:00,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 08:02:00,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 08:02:00" (1/1) ... [2025-03-04 08:02:00,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b865710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:00, skipping insertion in model container [2025-03-04 08:02:00,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 08:02:00" (1/1) ... [2025-03-04 08:02:00,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 08:02:01,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 08:02:01,107 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 08:02:01,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 08:02:01,129 INFO L204 MainTranslator]: Completed translation [2025-03-04 08:02:01,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01 WrapperNode [2025-03-04 08:02:01,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 08:02:01,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 08:02:01,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 08:02:01,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 08:02:01,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,153 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2025-03-04 08:02:01,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 08:02:01,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 08:02:01,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 08:02:01,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 08:02:01,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,169 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-04 08:02:01,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,177 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 08:02:01,181 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 08:02:01,181 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 08:02:01,181 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 08:02:01,183 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (1/1) ... [2025-03-04 08:02:01,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 08:02:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:01,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 08:02:01,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 08:02:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 08:02:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 08:02:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 08:02:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 08:02:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 08:02:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 08:02:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 08:02:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 08:02:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 08:02:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 08:02:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 08:02:01,275 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 08:02:01,277 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 08:02:01,397 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-04 08:02:01,400 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 08:02:01,406 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 08:02:01,407 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 08:02:01,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 08:02:01 BoogieIcfgContainer [2025-03-04 08:02:01,408 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 08:02:01,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 08:02:01,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 08:02:01,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 08:02:01,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 08:02:00" (1/3) ... [2025-03-04 08:02:01,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2dcfa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 08:02:01, skipping insertion in model container [2025-03-04 08:02:01,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 08:02:01" (2/3) ... [2025-03-04 08:02:01,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2dcfa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 08:02:01, skipping insertion in model container [2025-03-04 08:02:01,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 08:02:01" (3/3) ... [2025-03-04 08:02:01,417 INFO L128 eAbstractionObserver]: Analyzing ICFG array3.i [2025-03-04 08:02:01,429 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 08:02:01,431 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array3.i that has 1 procedures, 24 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-04 08:02:01,464 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 08:02:01,473 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;@234f73df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 08:02:01,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 08:02:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 08:02:01,480 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:01,480 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 08:02:01,480 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:01,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1845853, now seen corresponding path program 1 times [2025-03-04 08:02:01,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:01,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056195882] [2025-03-04 08:02:01,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:01,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 08:02:01,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 08:02:01,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:01,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056195882] [2025-03-04 08:02:01,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056195882] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 08:02:01,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 08:02:01,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 08:02:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913822995] [2025-03-04 08:02:01,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 08:02:01,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 08:02:01,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:01,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 08:02:01,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 08:02:01,624 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:01,658 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2025-03-04 08:02:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 08:02:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-04 08:02:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:01,663 INFO L225 Difference]: With dead ends: 32 [2025-03-04 08:02:01,663 INFO L226 Difference]: Without dead ends: 30 [2025-03-04 08:02:01,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 08:02:01,666 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:01,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 08:02:01,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-04 08:02:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2025-03-04 08:02:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2025-03-04 08:02:01,687 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 4 [2025-03-04 08:02:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:01,688 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2025-03-04 08:02:01,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2025-03-04 08:02:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 08:02:01,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:01,688 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 08:02:01,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 08:02:01,688 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:01,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1846014, now seen corresponding path program 1 times [2025-03-04 08:02:01,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:01,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583551554] [2025-03-04 08:02:01,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:01,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:01,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 08:02:01,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 08:02:01,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:01,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:01,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583551554] [2025-03-04 08:02:01,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583551554] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 08:02:01,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 08:02:01,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 08:02:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351279632] [2025-03-04 08:02:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 08:02:01,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 08:02:01,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:01,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 08:02:01,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 08:02:01,745 INFO L87 Difference]: Start difference. First operand 25 states and 30 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) [2025-03-04 08:02:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:01,758 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2025-03-04 08:02:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 08:02:01,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-04 08:02:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:01,759 INFO L225 Difference]: With dead ends: 23 [2025-03-04 08:02:01,759 INFO L226 Difference]: Without dead ends: 23 [2025-03-04 08:02:01,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 08:02:01,760 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:01,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 08:02:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-04 08:02:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-03-04 08:02:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-03-04 08:02:01,767 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 4 [2025-03-04 08:02:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:01,767 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-03-04 08:02:01,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-03-04 08:02:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 08:02:01,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:01,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 08:02:01,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 08:02:01,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:01,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1846015, now seen corresponding path program 1 times [2025-03-04 08:02:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:01,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645041112] [2025-03-04 08:02:01,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:01,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:01,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 08:02:01,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 08:02:01,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:01,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:01,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645041112] [2025-03-04 08:02:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645041112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 08:02:01,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 08:02:01,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 08:02:01,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991714825] [2025-03-04 08:02:01,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 08:02:01,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 08:02:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:01,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 08:02:01,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 08:02:01,867 INFO L87 Difference]: Start difference. First operand 23 states and 27 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) [2025-03-04 08:02:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:01,896 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2025-03-04 08:02:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 08:02:01,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-04 08:02:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:01,898 INFO L225 Difference]: With dead ends: 25 [2025-03-04 08:02:01,898 INFO L226 Difference]: Without dead ends: 25 [2025-03-04 08:02:01,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 08:02:01,898 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:01,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 08:02:01,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-04 08:02:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-03-04 08:02:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.4) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2025-03-04 08:02:01,900 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 4 [2025-03-04 08:02:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:01,900 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2025-03-04 08:02:01,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2025-03-04 08:02:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 08:02:01,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:01,901 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 08:02:01,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 08:02:01,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:01,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:01,902 INFO L85 PathProgramCache]: Analyzing trace with hash -839977767, now seen corresponding path program 1 times [2025-03-04 08:02:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865999332] [2025-03-04 08:02:01,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:01,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 08:02:01,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 08:02:01,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:01,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:01,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:01,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865999332] [2025-03-04 08:02:01,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865999332] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:01,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043730259] [2025-03-04 08:02:01,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:01,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:01,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:01,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 08:02:01,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 08:02:01,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 08:02:01,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:01,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:01,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 08:02:02,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 08:02:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:02,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 08:02:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:02,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043730259] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 08:02:02,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 08:02:02,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-04 08:02:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258760815] [2025-03-04 08:02:02,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 08:02:02,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 08:02:02,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:02,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 08:02:02,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 08:02:02,066 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:02,129 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2025-03-04 08:02:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 08:02:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-04 08:02:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:02,130 INFO L225 Difference]: With dead ends: 45 [2025-03-04 08:02:02,130 INFO L226 Difference]: Without dead ends: 45 [2025-03-04 08:02:02,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 08:02:02,131 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:02,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 47 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 08:02:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-04 08:02:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2025-03-04 08:02:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2025-03-04 08:02:02,134 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 7 [2025-03-04 08:02:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:02,134 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2025-03-04 08:02:02,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2025-03-04 08:02:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 08:02:02,135 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:02,135 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 08:02:02,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 08:02:02,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:02,339 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:02,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash -839977606, now seen corresponding path program 1 times [2025-03-04 08:02:02,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016601113] [2025-03-04 08:02:02,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:02,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 08:02:02,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 08:02:02,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:02,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:02,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:02,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016601113] [2025-03-04 08:02:02,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016601113] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:02,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461098787] [2025-03-04 08:02:02,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:02,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:02,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:02,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:02,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 08:02:02,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 08:02:02,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 08:02:02,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:02,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:02,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 08:02:02,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 08:02:02,543 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 [2025-03-04 08:02:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:02,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 08:02:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:02,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461098787] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 08:02:02,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 08:02:02,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2025-03-04 08:02:02,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537960833] [2025-03-04 08:02:02,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 08:02:02,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 08:02:02,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:02,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 08:02:02,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-04 08:02:02,644 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:02,728 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2025-03-04 08:02:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 08:02:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-04 08:02:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:02,729 INFO L225 Difference]: With dead ends: 43 [2025-03-04 08:02:02,729 INFO L226 Difference]: Without dead ends: 43 [2025-03-04 08:02:02,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2025-03-04 08:02:02,730 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 43 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:02,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 61 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 08:02:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-03-04 08:02:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2025-03-04 08:02:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2025-03-04 08:02:02,732 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 7 [2025-03-04 08:02:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:02,732 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2025-03-04 08:02:02,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2025-03-04 08:02:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-04 08:02:02,733 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:02,733 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 08:02:02,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 08:02:02,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:02,937 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:02,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1143758860, now seen corresponding path program 1 times [2025-03-04 08:02:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:02,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616677887] [2025-03-04 08:02:02,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:02,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 08:02:02,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 08:02:02,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:02,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:03,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:03,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616677887] [2025-03-04 08:02:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616677887] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:03,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138403965] [2025-03-04 08:02:03,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:03,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:03,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:03,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:03,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 08:02:03,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 08:02:03,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 08:02:03,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:03,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:03,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 08:02:03,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 08:02:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:03,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 08:02:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 08:02:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138403965] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 08:02:03,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 08:02:03,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-04 08:02:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210334436] [2025-03-04 08:02:03,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 08:02:03,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 08:02:03,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:03,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 08:02:03,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-04 08:02:03,129 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2025-03-04 08:02:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:03,195 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2025-03-04 08:02:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 08:02:03,195 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) Word has length 21 [2025-03-04 08:02:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:03,196 INFO L225 Difference]: With dead ends: 86 [2025-03-04 08:02:03,196 INFO L226 Difference]: Without dead ends: 86 [2025-03-04 08:02:03,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-04 08:02:03,197 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 67 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:03,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 48 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 08:02:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-03-04 08:02:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2025-03-04 08:02:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 55 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) [2025-03-04 08:02:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2025-03-04 08:02:03,200 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 21 [2025-03-04 08:02:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:03,200 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2025-03-04 08:02:03,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2025-03-04 08:02:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2025-03-04 08:02:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-04 08:02:03,201 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:03,201 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 08:02:03,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 08:02:03,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:03,402 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:03,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1364620692, now seen corresponding path program 2 times [2025-03-04 08:02:03,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:03,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055678356] [2025-03-04 08:02:03,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 08:02:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:03,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-04 08:02:03,414 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 39 statements. [2025-03-04 08:02:03,414 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 08:02:03,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 08:02:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055678356] [2025-03-04 08:02:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055678356] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 08:02:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 08:02:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 08:02:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815118244] [2025-03-04 08:02:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 08:02:03,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 08:02:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:03,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 08:02:03,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 08:02:03,469 INFO L87 Difference]: Start difference. First operand 56 states and 60 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) [2025-03-04 08:02:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:03,478 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2025-03-04 08:02:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 08:02:03,479 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 39 [2025-03-04 08:02:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:03,479 INFO L225 Difference]: With dead ends: 55 [2025-03-04 08:02:03,479 INFO L226 Difference]: Without dead ends: 53 [2025-03-04 08:02:03,480 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 [2025-03-04 08:02:03,481 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:03,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 08:02:03,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-04 08:02:03,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-03-04 08:02:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2025-03-04 08:02:03,483 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 39 [2025-03-04 08:02:03,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:03,486 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2025-03-04 08:02:03,486 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) [2025-03-04 08:02:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2025-03-04 08:02:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-04 08:02:03,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:03,488 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 08:02:03,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 08:02:03,488 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:03,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -646454349, now seen corresponding path program 1 times [2025-03-04 08:02:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:03,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916315262] [2025-03-04 08:02:03,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:03,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-04 08:02:03,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-04 08:02:03,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:03,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 08:02:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916315262] [2025-03-04 08:02:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916315262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 08:02:03,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 08:02:03,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 08:02:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901152637] [2025-03-04 08:02:03,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 08:02:03,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 08:02:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:03,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 08:02:03,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 08:02:03,601 INFO L87 Difference]: Start difference. First operand 53 states and 57 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) [2025-03-04 08:02:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:03,613 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2025-03-04 08:02:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 08:02:03,614 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 40 [2025-03-04 08:02:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:03,614 INFO L225 Difference]: With dead ends: 49 [2025-03-04 08:02:03,614 INFO L226 Difference]: Without dead ends: 47 [2025-03-04 08:02:03,614 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 [2025-03-04 08:02:03,615 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:03,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 08:02:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-03-04 08:02:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2025-03-04 08:02:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2025-03-04 08:02:03,617 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 40 [2025-03-04 08:02:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:03,617 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2025-03-04 08:02:03,617 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) [2025-03-04 08:02:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2025-03-04 08:02:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-04 08:02:03,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:03,618 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 1, 1, 1, 1] [2025-03-04 08:02:03,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 08:02:03,618 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:03,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1493029374, now seen corresponding path program 1 times [2025-03-04 08:02:03,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067156976] [2025-03-04 08:02:03,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:03,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-04 08:02:03,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 08:02:03,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:03,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 08:02:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067156976] [2025-03-04 08:02:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067156976] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938815481] [2025-03-04 08:02:03,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 08:02:03,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:03,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:03,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 08:02:03,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-04 08:02:03,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 08:02:03,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 08:02:03,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:03,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 08:02:03,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 08:02:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 08:02:03,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 08:02:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 08:02:04,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938815481] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 08:02:04,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 08:02:04,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-04 08:02:04,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471084512] [2025-03-04 08:02:04,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 08:02:04,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 08:02:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:04,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 08:02:04,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-04 08:02:04,106 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 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) [2025-03-04 08:02:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:04,251 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2025-03-04 08:02:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-04 08:02:04,251 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 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) Word has length 46 [2025-03-04 08:02:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:04,252 INFO L225 Difference]: With dead ends: 139 [2025-03-04 08:02:04,252 INFO L226 Difference]: Without dead ends: 139 [2025-03-04 08:02:04,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-04 08:02:04,253 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 134 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:04,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 30 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 08:02:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-03-04 08:02:04,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 83. [2025-03-04 08:02:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2025-03-04 08:02:04,256 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 46 [2025-03-04 08:02:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:04,256 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2025-03-04 08:02:04,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 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) [2025-03-04 08:02:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2025-03-04 08:02:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-04 08:02:04,258 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:04,258 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 1, 1, 1, 1] [2025-03-04 08:02:04,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 08:02:04,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:04,462 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:04,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:04,462 INFO L85 PathProgramCache]: Analyzing trace with hash -396069186, now seen corresponding path program 2 times [2025-03-04 08:02:04,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:04,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627052948] [2025-03-04 08:02:04,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 08:02:04,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:04,482 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-03-04 08:02:04,504 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-03-04 08:02:04,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 08:02:04,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 08:02:05,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:05,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627052948] [2025-03-04 08:02:05,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627052948] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:05,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155321996] [2025-03-04 08:02:05,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 08:02:05,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:05,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:05,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:05,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 08:02:05,047 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-03-04 08:02:05,080 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-03-04 08:02:05,080 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 08:02:05,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:05,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 08:02:05,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 08:02:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 08:02:05,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 08:02:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 08:02:05,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155321996] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 08:02:05,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 08:02:05,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-04 08:02:05,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295735030] [2025-03-04 08:02:05,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 08:02:05,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-04 08:02:05,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:05,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-04 08:02:05,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-04 08:02:05,849 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 49 states, 49 states have (on average 2.9591836734693877) internal successors, (145), 49 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:06,179 INFO L93 Difference]: Finished difference Result 283 states and 326 transitions. [2025-03-04 08:02:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-04 08:02:06,179 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.9591836734693877) internal successors, (145), 49 states have internal predecessors, (145), 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 82 [2025-03-04 08:02:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:06,180 INFO L225 Difference]: With dead ends: 283 [2025-03-04 08:02:06,180 INFO L226 Difference]: Without dead ends: 283 [2025-03-04 08:02:06,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-04 08:02:06,181 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 304 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:06,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 55 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 08:02:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-03-04 08:02:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 155. [2025-03-04 08:02:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2025-03-04 08:02:06,190 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 82 [2025-03-04 08:02:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:06,190 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2025-03-04 08:02:06,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.9591836734693877) internal successors, (145), 49 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:06,190 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2025-03-04 08:02:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-04 08:02:06,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:06,191 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 4, 1, 1, 1, 1] [2025-03-04 08:02:06,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 08:02:06,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-04 08:02:06,396 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:06,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:06,396 INFO L85 PathProgramCache]: Analyzing trace with hash 7839806, now seen corresponding path program 3 times [2025-03-04 08:02:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:06,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414111635] [2025-03-04 08:02:06,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 08:02:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:06,414 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 154 statements into 47 equivalence classes. [2025-03-04 08:02:06,425 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 28 of 154 statements. [2025-03-04 08:02:06,425 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-04 08:02:06,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2025-03-04 08:02:06,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:06,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414111635] [2025-03-04 08:02:06,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414111635] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:06,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140938954] [2025-03-04 08:02:06,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 08:02:06,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:06,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:06,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:06,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 08:02:06,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 154 statements into 47 equivalence classes. [2025-03-04 08:02:06,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 28 of 154 statements. [2025-03-04 08:02:06,627 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-04 08:02:06,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:06,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-04 08:02:06,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 08:02:06,639 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 [2025-03-04 08:02:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2025-03-04 08:02:07,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 08:02:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2025-03-04 08:02:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140938954] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 08:02:07,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 08:02:07,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-03-04 08:02:07,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732687927] [2025-03-04 08:02:07,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 08:02:07,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 08:02:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:07,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 08:02:07,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2025-03-04 08:02:07,554 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:07,758 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2025-03-04 08:02:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 08:02:07,759 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 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 154 [2025-03-04 08:02:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:07,759 INFO L225 Difference]: With dead ends: 173 [2025-03-04 08:02:07,759 INFO L226 Difference]: Without dead ends: 173 [2025-03-04 08:02:07,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=315, Unknown=0, NotChecked=0, Total=506 [2025-03-04 08:02:07,760 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 81 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:07,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 48 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 08:02:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-04 08:02:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2025-03-04 08:02:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2025-03-04 08:02:07,769 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 154 [2025-03-04 08:02:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:07,769 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2025-03-04 08:02:07,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2025-03-04 08:02:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-04 08:02:07,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:07,771 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 10, 10, 10, 1, 1, 1, 1] [2025-03-04 08:02:07,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 08:02:07,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:07,978 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:07,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash 355723198, now seen corresponding path program 4 times [2025-03-04 08:02:07,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:07,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449622658] [2025-03-04 08:02:07,979 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 08:02:07,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:07,996 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 172 statements into 2 equivalence classes. [2025-03-04 08:02:08,082 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 172 of 172 statements. [2025-03-04 08:02:08,082 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 08:02:08,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3296 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 08:02:09,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449622658] [2025-03-04 08:02:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449622658] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167160648] [2025-03-04 08:02:09,559 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 08:02:09,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:09,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:09,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:09,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 08:02:09,636 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 172 statements into 2 equivalence classes. [2025-03-04 08:02:11,614 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 172 of 172 statements. [2025-03-04 08:02:11,614 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 08:02:11,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:11,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-04 08:02:11,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 08:02:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3296 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 08:02:11,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 08:02:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3296 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 08:02:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167160648] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 08:02:13,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 08:02:13,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-03-04 08:02:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766783226] [2025-03-04 08:02:13,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 08:02:13,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-04 08:02:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 08:02:13,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-04 08:02:13,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-04 08:02:13,650 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand has 96 states, 96 states have (on average 2.96875) internal successors, (285), 96 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 08:02:14,784 INFO L93 Difference]: Finished difference Result 571 states and 656 transitions. [2025-03-04 08:02:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-04 08:02:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.96875) internal successors, (285), 96 states have internal predecessors, (285), 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 172 [2025-03-04 08:02:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 08:02:14,787 INFO L225 Difference]: With dead ends: 571 [2025-03-04 08:02:14,787 INFO L226 Difference]: Without dead ends: 571 [2025-03-04 08:02:14,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-04 08:02:14,790 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 932 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 08:02:14,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 103 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 08:02:14,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2025-03-04 08:02:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 317. [2025-03-04 08:02:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 316 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2025-03-04 08:02:14,803 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 172 [2025-03-04 08:02:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 08:02:14,803 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2025-03-04 08:02:14,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.96875) internal successors, (285), 96 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 08:02:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2025-03-04 08:02:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2025-03-04 08:02:14,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 08:02:14,810 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 10, 10, 10, 1, 1, 1, 1] [2025-03-04 08:02:14,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 08:02:15,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:15,011 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2025-03-04 08:02:15,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 08:02:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash -117245250, now seen corresponding path program 5 times [2025-03-04 08:02:15,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 08:02:15,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661247432] [2025-03-04 08:02:15,012 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 08:02:15,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 08:02:15,061 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 316 statements into 95 equivalence classes. [2025-03-04 08:02:15,980 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) and asserted 316 of 316 statements. [2025-03-04 08:02:15,980 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2025-03-04 08:02:15,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 08:02:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13352 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 08:02:20,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 08:02:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661247432] [2025-03-04 08:02:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661247432] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 08:02:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914132804] [2025-03-04 08:02:20,501 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 08:02:20,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 08:02:20,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 08:02:20,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 08:02:20,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 08:02:20,618 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 316 statements into 95 equivalence classes.