./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/ldv-memsafety/ArraysWithLenghtAtDeclaration.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef4a52e45666a829b602608a46cff9c8137910dd58bdfaebe016ce17984d1ac8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:31:59,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:32:00,010 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:32:00,015 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:32:00,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:32:00,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:32:00,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:32:00,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:32:00,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:32:00,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:32:00,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:32:00,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:32:00,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:32:00,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:32:00,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:32:00,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:32:00,056 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:32:00,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:32:00,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:32:00,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:32:00,057 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:32:00,061 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:32:00,062 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:32:00,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:32:00,062 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:32:00,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:32:00,063 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:32:00,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:32:00,063 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:32:00,063 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:32:00,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:32:00,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:32:00,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:32:00,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:32:00,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:32:00,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:32:00,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:32:00,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:32:00,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:32:00,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:32:00,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:32:00,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:32:00,068 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef4a52e45666a829b602608a46cff9c8137910dd58bdfaebe016ce17984d1ac8 [2024-11-17 00:32:00,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:32:00,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:32:00,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:32:00,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:32:00,345 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:32:00,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2024-11-17 00:32:01,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:32:02,054 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:32:02,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2024-11-17 00:32:02,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f744b21/a3b2780143bb4e97aa63111f956c4453/FLAGe73b34e7d [2024-11-17 00:32:02,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f744b21/a3b2780143bb4e97aa63111f956c4453 [2024-11-17 00:32:02,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:32:02,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:32:02,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:32:02,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:32:02,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:32:02,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1e9c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02, skipping insertion in model container [2024-11-17 00:32:02,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:32:02,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:32:02,334 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:32:02,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:32:02,364 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:32:02,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02 WrapperNode [2024-11-17 00:32:02,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:32:02,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:32:02,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:32:02,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:32:02,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,394 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-17 00:32:02,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:32:02,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:32:02,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:32:02,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:32:02,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,418 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 00:32:02,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,423 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:32:02,431 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:32:02,431 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:32:02,432 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:32:02,432 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (1/1) ... [2024-11-17 00:32:02,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:32:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:02,468 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) [2024-11-17 00:32:02,470 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 [2024-11-17 00:32:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:32:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:32:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:32:02,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:32:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:32:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:32:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 00:32:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:32:02,599 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:32:02,601 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:32:02,848 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L24: call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#mask~0#1.base, main_~#mask~0#1.offset);havoc main_~#mask~0#1.base, main_~#mask~0#1.offset; [2024-11-17 00:32:02,863 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-17 00:32:02,864 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:32:02,887 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:32:02,905 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:32:02,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:32:02 BoogieIcfgContainer [2024-11-17 00:32:02,906 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:32:02,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:32:02,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:32:02,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:32:02,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:32:02" (1/3) ... [2024-11-17 00:32:02,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c3ec5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:32:02, skipping insertion in model container [2024-11-17 00:32:02,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:32:02" (2/3) ... [2024-11-17 00:32:02,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c3ec5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:32:02, skipping insertion in model container [2024-11-17 00:32:02,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:32:02" (3/3) ... [2024-11-17 00:32:02,932 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration.c [2024-11-17 00:32:02,947 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:32:02,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 00:32:02,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:32:02,997 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;@79297846, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:32:02,997 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 00:32:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.625) internal successors, (39), 32 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) [2024-11-17 00:32:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-17 00:32:03,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:03,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:03,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:03,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash 30530691, now seen corresponding path program 1 times [2024-11-17 00:32:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:03,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815794786] [2024-11-17 00:32:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:03,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:03,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:03,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815794786] [2024-11-17 00:32:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815794786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:03,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:32:03,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:32:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728366946] [2024-11-17 00:32:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:03,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:32:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:03,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:32:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:32:03,336 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.625) internal successors, (39), 32 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) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:03,380 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-17 00:32:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:32:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-17 00:32:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:03,391 INFO L225 Difference]: With dead ends: 40 [2024-11-17 00:32:03,391 INFO L226 Difference]: Without dead ends: 37 [2024-11-17 00:32:03,393 INFO L431 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 [2024-11-17 00:32:03,397 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:03,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:32:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-17 00:32:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2024-11-17 00:32:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.48) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-17 00:32:03,430 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 7 [2024-11-17 00:32:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:03,430 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-17 00:32:03,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-17 00:32:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:32:03,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:03,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:03,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:32:03,432 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:03,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:03,432 INFO L85 PathProgramCache]: Analyzing trace with hash 944110904, now seen corresponding path program 1 times [2024-11-17 00:32:03,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:03,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517428684] [2024-11-17 00:32:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:03,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:03,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:03,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517428684] [2024-11-17 00:32:03,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517428684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:03,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:32:03,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:32:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413808324] [2024-11-17 00:32:03,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:03,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:32:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:32:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:32:03,522 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-17 00:32:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:03,579 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-17 00:32:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:32:03,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-17 00:32:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:03,582 INFO L225 Difference]: With dead ends: 56 [2024-11-17 00:32:03,582 INFO L226 Difference]: Without dead ends: 56 [2024-11-17 00:32:03,583 INFO L431 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 [2024-11-17 00:32:03,584 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:03,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 44 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:32:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-17 00:32:03,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2024-11-17 00:32:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-17 00:32:03,593 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2024-11-17 00:32:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:03,594 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-17 00:32:03,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-17 00:32:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-17 00:32:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:32:03,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:03,595 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:03,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:32:03,595 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:03,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 946451420, now seen corresponding path program 1 times [2024-11-17 00:32:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:03,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093531796] [2024-11-17 00:32:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:03,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093531796] [2024-11-17 00:32:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093531796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:03,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:32:03,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:32:03,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975441283] [2024-11-17 00:32:03,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:03,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:32:03,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:32:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:32:03,829 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-17 00:32:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:03,892 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-17 00:32:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:32:03,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-17 00:32:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:03,896 INFO L225 Difference]: With dead ends: 36 [2024-11-17 00:32:03,896 INFO L226 Difference]: Without dead ends: 36 [2024-11-17 00:32:03,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:32:03,900 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:03,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:32:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-17 00:32:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-17 00:32:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-17 00:32:03,911 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2024-11-17 00:32:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:03,912 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-17 00:32:03,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-17 00:32:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-17 00:32:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:32:03,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:03,913 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:03,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:32:03,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:03,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash 946451421, now seen corresponding path program 1 times [2024-11-17 00:32:03,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:03,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723143694] [2024-11-17 00:32:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:03,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:04,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723143694] [2024-11-17 00:32:04,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723143694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:04,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:32:04,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:32:04,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892026370] [2024-11-17 00:32:04,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:04,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:32:04,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:32:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:32:04,079 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-17 00:32:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:04,147 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-17 00:32:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:32:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-17 00:32:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:04,149 INFO L225 Difference]: With dead ends: 39 [2024-11-17 00:32:04,149 INFO L226 Difference]: Without dead ends: 39 [2024-11-17 00:32:04,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:32:04,151 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:04,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:32:04,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-17 00:32:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-11-17 00:32:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-17 00:32:04,157 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2024-11-17 00:32:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:04,157 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-17 00:32:04,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-17 00:32:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-17 00:32:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-17 00:32:04,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:04,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:04,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:32:04,158 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:04,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash -724811780, now seen corresponding path program 1 times [2024-11-17 00:32:04,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:04,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805111831] [2024-11-17 00:32:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:04,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:04,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805111831] [2024-11-17 00:32:04,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805111831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:04,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:32:04,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:32:04,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464193596] [2024-11-17 00:32:04,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:04,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:32:04,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:04,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:32:04,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:32:04,276 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:04,355 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-11-17 00:32:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:32:04,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-17 00:32:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:04,360 INFO L225 Difference]: With dead ends: 57 [2024-11-17 00:32:04,360 INFO L226 Difference]: Without dead ends: 57 [2024-11-17 00:32:04,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:32:04,361 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:04,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 52 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-17 00:32:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2024-11-17 00:32:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-17 00:32:04,373 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 9 [2024-11-17 00:32:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:04,374 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-17 00:32:04,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-17 00:32:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-17 00:32:04,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:04,375 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:04,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:32:04,375 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:04,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:04,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1032612799, now seen corresponding path program 1 times [2024-11-17 00:32:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:04,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421874607] [2024-11-17 00:32:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:04,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:04,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421874607] [2024-11-17 00:32:04,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421874607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:04,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957419033] [2024-11-17 00:32:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:04,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:04,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:04,508 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) [2024-11-17 00:32:04,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:32:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:04,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:32:04,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:04,681 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:32:04,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957419033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:04,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:32:04,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-17 00:32:04,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956486863] [2024-11-17 00:32:04,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:04,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:32:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:32:04,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:32:04,683 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2024-11-17 00:32:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:04,766 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2024-11-17 00:32:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:32:04,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-17 00:32:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:04,767 INFO L225 Difference]: With dead ends: 52 [2024-11-17 00:32:04,767 INFO L226 Difference]: Without dead ends: 52 [2024-11-17 00:32:04,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:32:04,769 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:04,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 66 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-17 00:32:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2024-11-17 00:32:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 43 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) [2024-11-17 00:32:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-11-17 00:32:04,781 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2024-11-17 00:32:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:04,782 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-11-17 00:32:04,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2024-11-17 00:32:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-11-17 00:32:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:32:04,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:04,783 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:04,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:32:04,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 00:32:04,984 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:04,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:04,984 INFO L85 PathProgramCache]: Analyzing trace with hash -203489222, now seen corresponding path program 1 times [2024-11-17 00:32:04,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:04,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423319508] [2024-11-17 00:32:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:04,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423319508] [2024-11-17 00:32:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423319508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:32:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:32:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936383851] [2024-11-17 00:32:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:05,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:32:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:32:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:32:05,077 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:05,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:05,100 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-17 00:32:05,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:32:05,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-17 00:32:05,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:05,101 INFO L225 Difference]: With dead ends: 42 [2024-11-17 00:32:05,101 INFO L226 Difference]: Without dead ends: 42 [2024-11-17 00:32:05,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:32:05,102 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:05,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 25 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:32:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-17 00:32:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-17 00:32:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 41 states have internal predecessors, (46), 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) [2024-11-17 00:32:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-17 00:32:05,106 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 14 [2024-11-17 00:32:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:05,106 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-17 00:32:05,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-17 00:32:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:32:05,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:05,108 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:05,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:32:05,111 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:05,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash -203489221, now seen corresponding path program 1 times [2024-11-17 00:32:05,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:05,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534433584] [2024-11-17 00:32:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:05,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534433584] [2024-11-17 00:32:05,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534433584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:05,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:32:05,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:32:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584104943] [2024-11-17 00:32:05,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:05,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:32:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:05,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:32:05,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:32:05,248 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-17 00:32:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:05,277 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-11-17 00:32:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:32:05,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 14 [2024-11-17 00:32:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:05,278 INFO L225 Difference]: With dead ends: 46 [2024-11-17 00:32:05,278 INFO L226 Difference]: Without dead ends: 46 [2024-11-17 00:32:05,279 INFO L431 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 [2024-11-17 00:32:05,279 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:05,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:32:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-17 00:32:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-17 00:32:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-17 00:32:05,286 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 14 [2024-11-17 00:32:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:05,288 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-17 00:32:05,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-17 00:32:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-17 00:32:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-17 00:32:05,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:05,291 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:05,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:32:05,291 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:05,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2061412907, now seen corresponding path program 1 times [2024-11-17 00:32:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:05,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523566298] [2024-11-17 00:32:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523566298] [2024-11-17 00:32:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523566298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567659827] [2024-11-17 00:32:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:05,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:05,443 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) [2024-11-17 00:32:05,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:32:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:05,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:32:05,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:05,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:05,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-17 00:32:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:05,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567659827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:05,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:05,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-17 00:32:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481875770] [2024-11-17 00:32:05,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:05,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:32:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:32:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:32:05,816 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:05,902 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-11-17 00:32:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:32:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-17 00:32:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:05,903 INFO L225 Difference]: With dead ends: 48 [2024-11-17 00:32:05,903 INFO L226 Difference]: Without dead ends: 48 [2024-11-17 00:32:05,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:32:05,904 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 70 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:05,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 44 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-17 00:32:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-17 00:32:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 45 states have internal predecessors, (50), 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) [2024-11-17 00:32:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-17 00:32:05,912 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 21 [2024-11-17 00:32:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:05,912 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-17 00:32:05,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-17 00:32:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-17 00:32:05,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:05,913 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:05,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 00:32:06,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-17 00:32:06,116 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:06,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash 593230561, now seen corresponding path program 1 times [2024-11-17 00:32:06,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054590227] [2024-11-17 00:32:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054590227] [2024-11-17 00:32:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054590227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131681479] [2024-11-17 00:32:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:06,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:06,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:06,183 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) [2024-11-17 00:32:06,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:32:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:06,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:32:06,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:06,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:06,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131681479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:06,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-17 00:32:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960357719] [2024-11-17 00:32:06,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:06,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:32:06,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:32:06,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:32:06,364 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 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) [2024-11-17 00:32:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:06,480 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2024-11-17 00:32:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:32:06,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 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) Word has length 22 [2024-11-17 00:32:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:06,481 INFO L225 Difference]: With dead ends: 51 [2024-11-17 00:32:06,481 INFO L226 Difference]: Without dead ends: 51 [2024-11-17 00:32:06,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:32:06,482 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:06,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 72 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-17 00:32:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-17 00:32:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2024-11-17 00:32:06,485 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 22 [2024-11-17 00:32:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:06,486 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2024-11-17 00:32:06,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 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) [2024-11-17 00:32:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2024-11-17 00:32:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:32:06,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:06,487 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:06,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 00:32:06,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:06,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:06,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash -971972047, now seen corresponding path program 1 times [2024-11-17 00:32:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999679582] [2024-11-17 00:32:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:06,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999679582] [2024-11-17 00:32:06,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999679582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:06,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288567418] [2024-11-17 00:32:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:06,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:06,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:06,773 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) [2024-11-17 00:32:06,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:32:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:06,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 00:32:06,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:07,058 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#mask~0#1.base_13| Int) (|v_ULTIMATE.start_main_~#b~0#1.base_18| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_18|) 0) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_18| 1) |v_ULTIMATE.start_main_~#mask~0#1.base_13|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_18| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_13| 0)))) is different from true [2024-11-17 00:32:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:32:07,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:32:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288567418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:32:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-17 00:32:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367119451] [2024-11-17 00:32:07,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:07,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:32:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:07,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:32:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-17 00:32:07,072 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:07,090 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2024-11-17 00:32:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:32:07,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:32:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:07,092 INFO L225 Difference]: With dead ends: 51 [2024-11-17 00:32:07,092 INFO L226 Difference]: Without dead ends: 48 [2024-11-17 00:32:07,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-17 00:32:07,093 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:07,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2024-11-17 00:32:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-17 00:32:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-17 00:32:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 47 states have internal predecessors, (50), 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) [2024-11-17 00:32:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-17 00:32:07,096 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 25 [2024-11-17 00:32:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:07,096 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-17 00:32:07,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-17 00:32:07,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:32:07,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:07,097 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:07,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:07,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:07,302 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:07,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash -971903369, now seen corresponding path program 1 times [2024-11-17 00:32:07,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:07,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872622790] [2024-11-17 00:32:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:07,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:32:07,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:07,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872622790] [2024-11-17 00:32:07,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872622790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:07,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512330527] [2024-11-17 00:32:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:07,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:07,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:07,369 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) [2024-11-17 00:32:07,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:32:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:07,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 00:32:07,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:07,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 00:32:07,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 00:32:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:07,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:07,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-17 00:32:07,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-17 00:32:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:32:07,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512330527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:07,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:07,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 10] total 19 [2024-11-17 00:32:07,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667515497] [2024-11-17 00:32:07,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:07,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 00:32:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 00:32:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:32:07,834 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:07,997 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2024-11-17 00:32:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 00:32:07,998 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:32:07,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:07,998 INFO L225 Difference]: With dead ends: 74 [2024-11-17 00:32:07,998 INFO L226 Difference]: Without dead ends: 74 [2024-11-17 00:32:07,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-17 00:32:07,999 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 43 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:07,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 168 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-17 00:32:08,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 54. [2024-11-17 00:32:08,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 53 states have internal predecessors, (56), 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) [2024-11-17 00:32:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-17 00:32:08,002 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 25 [2024-11-17 00:32:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:08,002 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-17 00:32:08,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-17 00:32:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:32:08,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:08,003 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:08,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 00:32:08,207 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,SelfDestructingSolverStorable11 [2024-11-17 00:32:08,208 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:08,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash 175718109, now seen corresponding path program 1 times [2024-11-17 00:32:08,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:08,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145031394] [2024-11-17 00:32:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:32:08,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145031394] [2024-11-17 00:32:08,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145031394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137274978] [2024-11-17 00:32:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:08,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:08,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:08,272 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) [2024-11-17 00:32:08,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:32:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:08,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:32:08,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:08,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:32:08,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137274978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:08,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:08,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 3] total 8 [2024-11-17 00:32:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450686183] [2024-11-17 00:32:08,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:08,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:32:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:32:08,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:32:08,433 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:08,622 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2024-11-17 00:32:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:32:08,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:32:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:08,623 INFO L225 Difference]: With dead ends: 100 [2024-11-17 00:32:08,623 INFO L226 Difference]: Without dead ends: 100 [2024-11-17 00:32:08,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:32:08,624 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:08,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 82 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-17 00:32:08,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 65. [2024-11-17 00:32:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 64 states have internal predecessors, (71), 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) [2024-11-17 00:32:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2024-11-17 00:32:08,632 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 25 [2024-11-17 00:32:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:08,632 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2024-11-17 00:32:08,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2024-11-17 00:32:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-17 00:32:08,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:08,633 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:08,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:08,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:08,837 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:08,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1152294083, now seen corresponding path program 1 times [2024-11-17 00:32:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602261825] [2024-11-17 00:32:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:32:09,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:09,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602261825] [2024-11-17 00:32:09,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602261825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:09,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234055639] [2024-11-17 00:32:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:09,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:09,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:09,023 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) [2024-11-17 00:32:09,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:32:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:09,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 00:32:09,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:09,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-17 00:32:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:32:09,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:32:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234055639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:09,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:09,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-17 00:32:09,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359124720] [2024-11-17 00:32:09,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:09,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:32:09,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:32:09,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:32:09,337 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:09,457 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2024-11-17 00:32:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:32:09,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-17 00:32:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:09,458 INFO L225 Difference]: With dead ends: 68 [2024-11-17 00:32:09,458 INFO L226 Difference]: Without dead ends: 68 [2024-11-17 00:32:09,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:32:09,459 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:09,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 45 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-17 00:32:09,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-17 00:32:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 65 states have internal predecessors, (70), 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) [2024-11-17 00:32:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-17 00:32:09,462 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 26 [2024-11-17 00:32:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:09,462 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-17 00:32:09,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-17 00:32:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:32:09,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:09,463 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 00:32:09,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 00:32:09,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:09,668 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:09,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -374397791, now seen corresponding path program 2 times [2024-11-17 00:32:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443586223] [2024-11-17 00:32:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 00:32:09,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:09,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443586223] [2024-11-17 00:32:09,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443586223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:09,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88425748] [2024-11-17 00:32:09,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:32:09,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:09,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:09,867 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) [2024-11-17 00:32:09,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:32:09,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:32:09,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:09,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 00:32:09,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:09,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:32:09,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-17 00:32:09,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-17 00:32:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 00:32:10,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:32:10,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88425748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:10,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:32:10,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2024-11-17 00:32:10,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927023807] [2024-11-17 00:32:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:10,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:32:10,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:32:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:32:10,315 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-17 00:32:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:10,369 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2024-11-17 00:32:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:32:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 32 [2024-11-17 00:32:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:10,370 INFO L225 Difference]: With dead ends: 65 [2024-11-17 00:32:10,370 INFO L226 Difference]: Without dead ends: 65 [2024-11-17 00:32:10,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:32:10,371 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:10,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:10,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-17 00:32:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-17 00:32:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 64 states have internal predecessors, (69), 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) [2024-11-17 00:32:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-17 00:32:10,378 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 32 [2024-11-17 00:32:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:10,378 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-17 00:32:10,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-17 00:32:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-17 00:32:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-17 00:32:10,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:10,379 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:10,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:10,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 00:32:10,580 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:10,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -887421977, now seen corresponding path program 2 times [2024-11-17 00:32:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278655350] [2024-11-17 00:32:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 26 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:32:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278655350] [2024-11-17 00:32:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278655350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447521676] [2024-11-17 00:32:10,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:32:10,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:10,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:10,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:10,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 00:32:10,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:32:10,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:10,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:32:10,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:32:10,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:32:10,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447521676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:10,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:10,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2024-11-17 00:32:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387730357] [2024-11-17 00:32:10,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:10,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:32:10,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:32:10,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:32:10,942 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2024-11-17 00:32:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:11,068 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2024-11-17 00:32:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:32:11,069 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 [2024-11-17 00:32:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:11,069 INFO L225 Difference]: With dead ends: 83 [2024-11-17 00:32:11,070 INFO L226 Difference]: Without dead ends: 83 [2024-11-17 00:32:11,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:32:11,071 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:11,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 89 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-17 00:32:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2024-11-17 00:32:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 76 states have internal predecessors, (81), 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) [2024-11-17 00:32:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2024-11-17 00:32:11,074 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 40 [2024-11-17 00:32:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:11,074 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2024-11-17 00:32:11,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2024-11-17 00:32:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2024-11-17 00:32:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 00:32:11,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:11,075 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:11,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:11,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 00:32:11,276 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:11,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash 441134673, now seen corresponding path program 2 times [2024-11-17 00:32:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:11,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729670956] [2024-11-17 00:32:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:11,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-17 00:32:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729670956] [2024-11-17 00:32:11,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729670956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780072194] [2024-11-17 00:32:11,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:32:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:11,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:11,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 00:32:11,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:32:11,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:11,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 00:32:11,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 00:32:11,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:11,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-17 00:32:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 00:32:11,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780072194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:11,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:11,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-17 00:32:11,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881119531] [2024-11-17 00:32:11,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:11,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 00:32:11,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 00:32:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:32:11,873 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 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) [2024-11-17 00:32:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:12,024 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2024-11-17 00:32:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:32:12,024 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 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 43 [2024-11-17 00:32:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:12,025 INFO L225 Difference]: With dead ends: 119 [2024-11-17 00:32:12,025 INFO L226 Difference]: Without dead ends: 119 [2024-11-17 00:32:12,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:32:12,026 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 127 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:12,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 119 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-17 00:32:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 87. [2024-11-17 00:32:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 86 states have internal predecessors, (91), 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) [2024-11-17 00:32:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2024-11-17 00:32:12,028 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 43 [2024-11-17 00:32:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:12,028 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2024-11-17 00:32:12,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 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) [2024-11-17 00:32:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2024-11-17 00:32:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-17 00:32:12,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:12,030 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-17 00:32:12,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:12,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 00:32:12,234 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:12,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1502794957, now seen corresponding path program 3 times [2024-11-17 00:32:12,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:12,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803495128] [2024-11-17 00:32:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:12,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 00:32:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:12,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803495128] [2024-11-17 00:32:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803495128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727955202] [2024-11-17 00:32:12,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:32:12,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:12,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:12,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 00:32:12,476 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:32:12,476 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:12,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 00:32:12,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 26 proven. 104 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-17 00:32:12,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-17 00:32:13,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727955202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:13,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:13,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2024-11-17 00:32:13,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996943856] [2024-11-17 00:32:13,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:13,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-17 00:32:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-17 00:32:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-11-17 00:32:13,343 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 30 states, 30 states have (on average 4.1) internal successors, (123), 30 states have internal predecessors, (123), 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) [2024-11-17 00:32:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:13,993 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2024-11-17 00:32:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-17 00:32:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.1) internal successors, (123), 30 states have internal predecessors, (123), 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 58 [2024-11-17 00:32:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:13,995 INFO L225 Difference]: With dead ends: 113 [2024-11-17 00:32:13,995 INFO L226 Difference]: Without dead ends: 113 [2024-11-17 00:32:13,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=664, Invalid=2306, Unknown=0, NotChecked=0, Total=2970 [2024-11-17 00:32:13,997 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 235 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:13,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 114 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:32:13,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-17 00:32:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-17 00:32:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 100 states have (on average 1.08) internal successors, (108), 102 states have internal predecessors, (108), 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) [2024-11-17 00:32:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2024-11-17 00:32:14,001 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 58 [2024-11-17 00:32:14,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:14,001 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2024-11-17 00:32:14,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.1) internal successors, (123), 30 states have internal predecessors, (123), 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) [2024-11-17 00:32:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2024-11-17 00:32:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-17 00:32:14,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:14,003 INFO L215 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 00:32:14,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:14,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 00:32:14,204 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:14,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1607444813, now seen corresponding path program 3 times [2024-11-17 00:32:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626050662] [2024-11-17 00:32:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 28 proven. 71 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-17 00:32:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:14,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626050662] [2024-11-17 00:32:14,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626050662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:14,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247695305] [2024-11-17 00:32:14,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:32:14,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:14,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:14,388 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:14,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 00:32:14,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:32:14,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:14,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 00:32:14,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:14,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:32:14,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-17 00:32:14,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-17 00:32:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-17 00:32:14,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:32:14,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247695305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:14,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:32:14,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-17 00:32:14,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570975941] [2024-11-17 00:32:14,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:14,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:32:14,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:32:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:32:14,758 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-17 00:32:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:14,806 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2024-11-17 00:32:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:32:14,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 65 [2024-11-17 00:32:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:14,809 INFO L225 Difference]: With dead ends: 102 [2024-11-17 00:32:14,809 INFO L226 Difference]: Without dead ends: 102 [2024-11-17 00:32:14,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:32:14,810 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 39 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:14,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 43 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:32:14,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-17 00:32:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-17 00:32:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.07) internal successors, (107), 101 states have internal predecessors, (107), 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) [2024-11-17 00:32:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-11-17 00:32:14,815 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 65 [2024-11-17 00:32:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:14,816 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-11-17 00:32:14,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-17 00:32:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-11-17 00:32:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-17 00:32:14,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:14,817 INFO L215 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:14,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 00:32:15,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:15,018 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:15,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1700827034, now seen corresponding path program 1 times [2024-11-17 00:32:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025923577] [2024-11-17 00:32:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:15,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 28 proven. 71 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-17 00:32:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025923577] [2024-11-17 00:32:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025923577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148309531] [2024-11-17 00:32:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:15,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:15,198 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:15,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 00:32:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:15,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 00:32:15,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-17 00:32:15,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-17 00:32:15,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148309531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:15,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:15,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-17 00:32:15,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881208883] [2024-11-17 00:32:15,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:15,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 00:32:15,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:15,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 00:32:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:32:15,513 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 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) [2024-11-17 00:32:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:15,747 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2024-11-17 00:32:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:32:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 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 71 [2024-11-17 00:32:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:15,749 INFO L225 Difference]: With dead ends: 102 [2024-11-17 00:32:15,749 INFO L226 Difference]: Without dead ends: 102 [2024-11-17 00:32:15,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:32:15,750 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 55 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:15,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 127 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:32:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-17 00:32:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-17 00:32:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.05) internal successors, (105), 101 states have internal predecessors, (105), 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) [2024-11-17 00:32:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2024-11-17 00:32:15,753 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 71 [2024-11-17 00:32:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:15,753 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2024-11-17 00:32:15,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 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) [2024-11-17 00:32:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2024-11-17 00:32:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-17 00:32:15,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:15,754 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:15,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:15,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-17 00:32:15,955 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:15,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash -648042692, now seen corresponding path program 2 times [2024-11-17 00:32:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:15,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715113676] [2024-11-17 00:32:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:15,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 00:32:16,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:16,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715113676] [2024-11-17 00:32:16,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715113676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:16,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739486653] [2024-11-17 00:32:16,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:32:16,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:16,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:16,107 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:16,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 00:32:16,180 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 00:32:16,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:16,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 00:32:16,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:16,654 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_25| Int) (|v_ULTIMATE.start_main_~#mask~0#1.base_20| Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_20|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_25|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_25| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_20| 0)) (= v_DerPreprocessor_2 (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_25| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#mask~0#1.base_20| v_DerPreprocessor_3) |v_ULTIMATE.start_main_~#b~0#1.base_25|)))) is different from true [2024-11-17 00:32:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-17 00:32:16,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:32:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739486653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:32:16,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:32:16,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-17 00:32:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754763413] [2024-11-17 00:32:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:32:16,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:32:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:32:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=39, Unknown=1, NotChecked=12, Total=72 [2024-11-17 00:32:16,669 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-17 00:32:16,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:16,685 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2024-11-17 00:32:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:32:16,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 76 [2024-11-17 00:32:16,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:16,686 INFO L225 Difference]: With dead ends: 101 [2024-11-17 00:32:16,686 INFO L226 Difference]: Without dead ends: 83 [2024-11-17 00:32:16,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=39, Unknown=1, NotChecked=12, Total=72 [2024-11-17 00:32:16,687 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:16,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2024-11-17 00:32:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-17 00:32:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-17 00:32:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 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) [2024-11-17 00:32:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2024-11-17 00:32:16,689 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 76 [2024-11-17 00:32:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:16,690 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2024-11-17 00:32:16,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-17 00:32:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2024-11-17 00:32:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-17 00:32:16,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:16,692 INFO L215 NwaCegarLoop]: trace histogram [14, 11, 11, 10, 10, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-17 00:32:16,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-17 00:32:16,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:16,897 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:16,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1036399485, now seen corresponding path program 2 times [2024-11-17 00:32:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706862047] [2024-11-17 00:32:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:16,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 41 proven. 288 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:32:17,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706862047] [2024-11-17 00:32:17,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706862047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966668734] [2024-11-17 00:32:17,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:32:17,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:17,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:17,120 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:17,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 00:32:17,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:32:17,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:17,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 00:32:17,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 58 proven. 271 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:32:17,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 58 proven. 271 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:32:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966668734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:17,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:17,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-17 00:32:17,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092448243] [2024-11-17 00:32:17,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:17,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:32:17,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:32:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:32:17,573 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 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) [2024-11-17 00:32:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:17,830 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2024-11-17 00:32:17,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-17 00:32:17,833 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 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 [2024-11-17 00:32:17,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:17,834 INFO L225 Difference]: With dead ends: 115 [2024-11-17 00:32:17,834 INFO L226 Difference]: Without dead ends: 115 [2024-11-17 00:32:17,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 149 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2024-11-17 00:32:17,835 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:17,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 78 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:32:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-17 00:32:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-11-17 00:32:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 110 states have internal predecessors, (114), 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) [2024-11-17 00:32:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2024-11-17 00:32:17,837 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 82 [2024-11-17 00:32:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:17,837 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2024-11-17 00:32:17,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 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) [2024-11-17 00:32:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2024-11-17 00:32:17,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-17 00:32:17,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:32:17,838 INFO L215 NwaCegarLoop]: trace histogram [18, 14, 14, 13, 13, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2024-11-17 00:32:17,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 00:32:18,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:18,039 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 00:32:18,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:32:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1534976301, now seen corresponding path program 3 times [2024-11-17 00:32:18,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:32:18,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721864940] [2024-11-17 00:32:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:32:18,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:32:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:32:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 357 proven. 175 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-17 00:32:18,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:32:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721864940] [2024-11-17 00:32:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721864940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:32:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511718445] [2024-11-17 00:32:18,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:32:18,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:32:18,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:32:18,340 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:32:18,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 00:32:18,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:32:18,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:32:18,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 00:32:18,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:32:18,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:32:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:32:18,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-11-17 00:32:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 157 proven. 264 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-17 00:32:19,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:32:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-17 00:32:20,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511718445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:32:20,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:32:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2024-11-17 00:32:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389370323] [2024-11-17 00:32:20,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:32:20,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-17 00:32:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:32:20,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-17 00:32:20,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2024-11-17 00:32:20,114 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand has 30 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 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) [2024-11-17 00:32:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:32:21,106 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2024-11-17 00:32:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-17 00:32:21,107 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 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 105 [2024-11-17 00:32:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:32:21,107 INFO L225 Difference]: With dead ends: 111 [2024-11-17 00:32:21,107 INFO L226 Difference]: Without dead ends: 0 [2024-11-17 00:32:21,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=763, Invalid=2659, Unknown=0, NotChecked=0, Total=3422 [2024-11-17 00:32:21,109 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 177 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:32:21,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 122 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:32:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-17 00:32:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-17 00:32:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:32:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-17 00:32:21,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2024-11-17 00:32:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:32:21,110 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 00:32:21,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 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) [2024-11-17 00:32:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-17 00:32:21,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-17 00:32:21,114 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-11-17 00:32:21,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-17 00:32:21,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-17 00:32:21,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2024-11-17 00:32:21,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-17 00:32:21,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-17 00:32:21,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-17 00:32:21,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX (0 of 8 remaining) [2024-11-17 00:32:21,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 00:32:21,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-17 00:32:21,323 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:32:21,324 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 00:32:21,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:32:21 BoogieIcfgContainer [2024-11-17 00:32:21,327 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 00:32:21,327 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 00:32:21,327 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 00:32:21,328 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 00:32:21,328 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:32:02" (3/4) ... [2024-11-17 00:32:21,330 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 00:32:21,337 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-11-17 00:32:21,337 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-17 00:32:21,337 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-17 00:32:21,337 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-17 00:32:21,424 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 00:32:21,425 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 00:32:21,427 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 00:32:21,428 INFO L158 Benchmark]: Toolchain (without parser) took 19336.52ms. Allocated memory was 136.3MB in the beginning and 243.3MB in the end (delta: 107.0MB). Free memory was 82.3MB in the beginning and 121.6MB in the end (delta: -39.3MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2024-11-17 00:32:21,428 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 00:32:21,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.00ms. Allocated memory is still 136.3MB. Free memory was 82.3MB in the beginning and 70.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-17 00:32:21,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.82ms. Allocated memory is still 136.3MB. Free memory was 70.4MB in the beginning and 68.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 00:32:21,429 INFO L158 Benchmark]: Boogie Preprocessor took 35.24ms. Allocated memory is still 136.3MB. Free memory was 68.9MB in the beginning and 67.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 00:32:21,429 INFO L158 Benchmark]: IcfgBuilder took 474.70ms. Allocated memory is still 136.3MB. Free memory was 67.1MB in the beginning and 105.7MB in the end (delta: -38.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2024-11-17 00:32:21,429 INFO L158 Benchmark]: TraceAbstraction took 18419.14ms. Allocated memory was 136.3MB in the beginning and 243.3MB in the end (delta: 107.0MB). Free memory was 105.0MB in the beginning and 125.6MB in the end (delta: -20.5MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. [2024-11-17 00:32:21,429 INFO L158 Benchmark]: Witness Printer took 99.98ms. Allocated memory is still 243.3MB. Free memory was 125.6MB in the beginning and 121.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 00:32:21,435 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.00ms. Allocated memory is still 136.3MB. Free memory was 82.3MB in the beginning and 70.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.82ms. Allocated memory is still 136.3MB. Free memory was 70.4MB in the beginning and 68.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.24ms. Allocated memory is still 136.3MB. Free memory was 68.9MB in the beginning and 67.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 474.70ms. Allocated memory is still 136.3MB. Free memory was 67.1MB in the beginning and 105.7MB in the end (delta: -38.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18419.14ms. Allocated memory was 136.3MB in the beginning and 243.3MB in the end (delta: 107.0MB). Free memory was 105.0MB in the beginning and 125.6MB in the end (delta: -20.5MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. * Witness Printer took 99.98ms. Allocated memory is still 243.3MB. Free memory was 125.6MB in the beginning and 121.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 23, TraceHistogramMax: 18, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1100 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1100 mSDsluCounter, 1548 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 54 IncrementalHoareTripleChecker+Unchecked, 1086 mSDsCounter, 157 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2400 IncrementalHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 157 mSolverCounterUnsat, 462 mSDtfsCounter, 2400 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1450 GetRequests, 1125 SyntacticMatches, 17 SemanticMatches, 308 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 1984 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=22, InterpolantAutomatonStates: 207, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 165 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 1524 NumberOfCodeBlocks, 1291 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1992 ConstructedInterpolants, 5 QuantifiedInterpolants, 14864 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1982 ConjunctsInSsa, 211 ConjunctsInUnsatCore, 50 InterpolantComputations, 12 PerfectInterpolantSequences, 2318/5000 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 00:32:21,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE