./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-15/cstrncpy_malloc.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/termination-15/cstrncpy_malloc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 6e588807776461813c1ae9106dc80912b11e9df5504cf2f27974dc29a72efbfe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:36:14,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:36:14,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-22 18:36:14,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:36:14,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:36:14,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:36:14,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:36:14,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:36:14,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:36:14,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:36:14,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:36:14,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:36:14,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:36:14,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:36:14,985 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:36:14,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:36:14,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:36:14,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:36:14,987 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:36:14,987 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:36:14,987 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:36:14,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:36:14,988 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:36:14,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:36:14,989 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:36:14,989 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:36:14,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:36:14,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:36:14,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:36:14,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:36:14,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:36:14,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:36:14,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:36:14,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:36:14,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:36:14,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:36:14,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:36:14,993 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:36:14,993 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:36:14,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e588807776461813c1ae9106dc80912b11e9df5504cf2f27974dc29a72efbfe [2024-11-22 18:36:15,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:36:15,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:36:15,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:36:15,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:36:15,240 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:36:15,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrncpy_malloc.i [2024-11-22 18:36:16,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:36:16,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:36:16,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrncpy_malloc.i [2024-11-22 18:36:16,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f298f8c/5ee816c6bf1a4cdca84a03db226cedef/FLAG1b9ce044e [2024-11-22 18:36:17,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f298f8c/5ee816c6bf1a4cdca84a03db226cedef [2024-11-22 18:36:17,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:36:17,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:36:17,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:36:17,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:36:17,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:36:17,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65544620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17, skipping insertion in model container [2024-11-22 18:36:17,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:36:17,564 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 18:36:17,566 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 18:36:17,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:36:17,580 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:36:17,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:36:17,673 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:36:17,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17 WrapperNode [2024-11-22 18:36:17,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:36:17,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:36:17,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:36:17,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:36:17,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,725 INFO L138 Inliner]: procedures = 152, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-11-22 18:36:17,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:36:17,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:36:17,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:36:17,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:36:17,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,753 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 3 writes are split as follows [1, 2]. [2024-11-22 18:36:17,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:36:17,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:36:17,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:36:17,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:36:17,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (1/1) ... [2024-11-22 18:36:17,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:36:17,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:36:17,819 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) [2024-11-22 18:36:17,829 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 [2024-11-22 18:36:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 18:36:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 18:36:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 18:36:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 18:36:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 18:36:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:36:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:36:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:36:17,978 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:36:17,981 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:36:18,208 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-11-22 18:36:18,210 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:36:18,225 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:36:18,225 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 18:36:18,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:36:18 BoogieIcfgContainer [2024-11-22 18:36:18,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:36:18,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:36:18,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:36:18,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:36:18,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:36:17" (1/3) ... [2024-11-22 18:36:18,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1256afc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:36:18, skipping insertion in model container [2024-11-22 18:36:18,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:36:17" (2/3) ... [2024-11-22 18:36:18,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1256afc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:36:18, skipping insertion in model container [2024-11-22 18:36:18,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:36:18" (3/3) ... [2024-11-22 18:36:18,258 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_malloc.i [2024-11-22 18:36:18,276 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:36:18,276 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-11-22 18:36:18,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:36:18,349 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;@3bc47b76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:36:18,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-22 18:36:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 39 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) [2024-11-22 18:36:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 18:36:18,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:18,363 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 18:36:18,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:18,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash 889510731, now seen corresponding path program 1 times [2024-11-22 18:36:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:18,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669338280] [2024-11-22 18:36:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669338280] [2024-11-22 18:36:18,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669338280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:18,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:36:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115065901] [2024-11-22 18:36:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:18,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:36:18,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:36:18,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:36:18,683 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 39 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:18,737 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-22 18:36:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:36:18,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-22 18:36:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:18,749 INFO L225 Difference]: With dead ends: 39 [2024-11-22 18:36:18,749 INFO L226 Difference]: Without dead ends: 37 [2024-11-22 18:36:18,751 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 [2024-11-22 18:36:18,755 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:18,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 39 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-22 18:36:18,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-22 18:36:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.7826086956521738) 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) [2024-11-22 18:36:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-22 18:36:18,791 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 6 [2024-11-22 18:36:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:18,792 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-22 18:36:18,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-22 18:36:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 18:36:18,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:18,793 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 18:36:18,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:36:18,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:18,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash 889510732, now seen corresponding path program 1 times [2024-11-22 18:36:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708698216] [2024-11-22 18:36:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:18,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708698216] [2024-11-22 18:36:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708698216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:19,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:19,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:36:19,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139154239] [2024-11-22 18:36:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:19,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:36:19,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:36:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:36:19,076 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:19,102 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-22 18:36:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:36:19,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-22 18:36:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:19,104 INFO L225 Difference]: With dead ends: 40 [2024-11-22 18:36:19,104 INFO L226 Difference]: Without dead ends: 40 [2024-11-22 18:36:19,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:36:19,105 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:19,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 76 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-22 18:36:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-22 18:36:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-22 18:36:19,112 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 6 [2024-11-22 18:36:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:19,112 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-22 18:36:19,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-22 18:36:19,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 18:36:19,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:19,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 18:36:19,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:36:19,115 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:19,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:19,117 INFO L85 PathProgramCache]: Analyzing trace with hash 889570314, now seen corresponding path program 1 times [2024-11-22 18:36:19,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:19,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743236730] [2024-11-22 18:36:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:19,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:19,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:19,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743236730] [2024-11-22 18:36:19,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743236730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:19,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:19,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:36:19,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500547207] [2024-11-22 18:36:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:19,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:36:19,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:36:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:36:19,334 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:19,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:19,357 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-22 18:36:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:36:19,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-22 18:36:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:19,359 INFO L225 Difference]: With dead ends: 39 [2024-11-22 18:36:19,360 INFO L226 Difference]: Without dead ends: 39 [2024-11-22 18:36:19,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:36:19,362 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:19,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-22 18:36:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-22 18:36:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.7391304347826086) 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) [2024-11-22 18:36:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-22 18:36:19,368 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 6 [2024-11-22 18:36:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:19,369 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-22 18:36:19,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-22 18:36:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 18:36:19,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:19,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:19,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 18:36:19,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:19,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:19,375 INFO L85 PathProgramCache]: Analyzing trace with hash -534039733, now seen corresponding path program 1 times [2024-11-22 18:36:19,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:19,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171430447] [2024-11-22 18:36:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:19,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:19,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171430447] [2024-11-22 18:36:19,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171430447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:19,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:19,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:36:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789776819] [2024-11-22 18:36:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:19,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:36:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:36:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:36:19,507 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2024-11-22 18:36:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:19,587 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-22 18:36:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:36:19,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2024-11-22 18:36:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:19,589 INFO L225 Difference]: With dead ends: 35 [2024-11-22 18:36:19,590 INFO L226 Difference]: Without dead ends: 35 [2024-11-22 18:36:19,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:36:19,592 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:19,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 65 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-22 18:36:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-22 18:36:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 34 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) [2024-11-22 18:36:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-22 18:36:19,602 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 9 [2024-11-22 18:36:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:19,602 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-22 18:36:19,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2024-11-22 18:36:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-22 18:36:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 18:36:19,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:19,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:19,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 18:36:19,603 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:19,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -534039732, now seen corresponding path program 1 times [2024-11-22 18:36:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003728186] [2024-11-22 18:36:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:19,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:19,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003728186] [2024-11-22 18:36:19,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003728186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:19,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:19,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:36:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280145268] [2024-11-22 18:36:19,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:19,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:36:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:36:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:36:19,829 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2024-11-22 18:36:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:19,925 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-22 18:36:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:36:19,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 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 [2024-11-22 18:36:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:19,926 INFO L225 Difference]: With dead ends: 38 [2024-11-22 18:36:19,928 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 18:36:19,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:36:19,929 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:19,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 129 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:36:19,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 18:36:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-22 18:36:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.64) internal successors, (41), 35 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) [2024-11-22 18:36:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-22 18:36:19,937 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 9 [2024-11-22 18:36:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:19,937 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-22 18:36:19,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2024-11-22 18:36:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-22 18:36:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 18:36:19,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:19,938 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:19,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 18:36:19,938 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:19,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash 624637463, now seen corresponding path program 1 times [2024-11-22 18:36:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138242714] [2024-11-22 18:36:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:20,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138242714] [2024-11-22 18:36:20,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138242714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:20,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:20,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:36:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11305439] [2024-11-22 18:36:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:20,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:36:20,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:36:20,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:36:20,069 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:20,144 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-22 18:36:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:36:20,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 18:36:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:20,147 INFO L225 Difference]: With dead ends: 36 [2024-11-22 18:36:20,147 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 18:36:20,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:36:20,148 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 52 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:20,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 58 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:36:20,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 18:36:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-22 18:36:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.56) internal successors, (39), 33 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) [2024-11-22 18:36:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-22 18:36:20,157 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 10 [2024-11-22 18:36:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:20,157 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-22 18:36:20,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-22 18:36:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 18:36:20,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:20,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:20,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 18:36:20,158 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:20,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 624637464, now seen corresponding path program 1 times [2024-11-22 18:36:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:20,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945941234] [2024-11-22 18:36:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945941234] [2024-11-22 18:36:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945941234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:20,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:36:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701724156] [2024-11-22 18:36:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:20,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:36:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:36:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:36:20,460 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:20,531 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-22 18:36:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:36:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 18:36:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:20,532 INFO L225 Difference]: With dead ends: 42 [2024-11-22 18:36:20,534 INFO L226 Difference]: Without dead ends: 42 [2024-11-22 18:36:20,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:36:20,535 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:20,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 119 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:36:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-22 18:36:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-22 18:36:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 39 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) [2024-11-22 18:36:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-22 18:36:20,542 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 10 [2024-11-22 18:36:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:20,542 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-22 18:36:20,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-22 18:36:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 18:36:20,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:20,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:20,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:36:20,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:20,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1895322470, now seen corresponding path program 1 times [2024-11-22 18:36:20,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:20,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232181850] [2024-11-22 18:36:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:20,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232181850] [2024-11-22 18:36:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232181850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:20,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:36:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760194721] [2024-11-22 18:36:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:20,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:36:20,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:36:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:36:20,778 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:20,834 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-22 18:36:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:36:20,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 18:36:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:20,836 INFO L225 Difference]: With dead ends: 43 [2024-11-22 18:36:20,836 INFO L226 Difference]: Without dead ends: 43 [2024-11-22 18:36:20,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:36:20,837 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:20,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 100 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-22 18:36:20,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-22 18:36:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 34 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) [2024-11-22 18:36:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-22 18:36:20,841 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 10 [2024-11-22 18:36:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:20,842 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-22 18:36:20,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-22 18:36:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 18:36:20,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:20,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:20,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 18:36:20,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:20,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2111104949, now seen corresponding path program 1 times [2024-11-22 18:36:20,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:20,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935171157] [2024-11-22 18:36:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:20,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935171157] [2024-11-22 18:36:20,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935171157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:20,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:20,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:36:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425718816] [2024-11-22 18:36:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:20,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:36:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:36:20,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:36:20,880 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:20,889 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-11-22 18:36:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:36:20,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-22 18:36:20,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:20,890 INFO L225 Difference]: With dead ends: 34 [2024-11-22 18:36:20,890 INFO L226 Difference]: Without dead ends: 34 [2024-11-22 18:36:20,890 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 [2024-11-22 18:36:20,891 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:20,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 47 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-22 18:36:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-22 18:36:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.5) internal successors, (39), 33 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) [2024-11-22 18:36:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-22 18:36:20,896 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-22 18:36:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:20,896 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-22 18:36:20,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-22 18:36:20,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 18:36:20,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:20,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:20,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 18:36:20,898 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:20,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1019743884, now seen corresponding path program 1 times [2024-11-22 18:36:20,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:20,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701955638] [2024-11-22 18:36:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701955638] [2024-11-22 18:36:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701955638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:20,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:20,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:36:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880304461] [2024-11-22 18:36:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:20,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:36:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:36:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:36:20,942 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:20,959 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-22 18:36:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:36:20,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-22 18:36:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:20,960 INFO L225 Difference]: With dead ends: 34 [2024-11-22 18:36:20,960 INFO L226 Difference]: Without dead ends: 34 [2024-11-22 18:36:20,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:36:20,961 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:20,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-22 18:36:20,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-22 18:36:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-22 18:36:20,963 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 12 [2024-11-22 18:36:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:20,964 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-22 18:36:20,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-22 18:36:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:36:20,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:20,965 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:20,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 18:36:20,965 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:20,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1518609372, now seen corresponding path program 1 times [2024-11-22 18:36:20,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:20,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257008073] [2024-11-22 18:36:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:20,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:21,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:21,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257008073] [2024-11-22 18:36:21,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257008073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:21,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:21,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:36:21,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107160571] [2024-11-22 18:36:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:21,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:36:21,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:36:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:36:21,019 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-22 18:36:21,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:21,037 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-22 18:36:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:36:21,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 18:36:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:21,038 INFO L225 Difference]: With dead ends: 42 [2024-11-22 18:36:21,038 INFO L226 Difference]: Without dead ends: 42 [2024-11-22 18:36:21,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:36:21,039 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:21,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-22 18:36:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-22 18:36:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-22 18:36:21,044 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 13 [2024-11-22 18:36:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:21,045 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-22 18:36:21,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-22 18:36:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-22 18:36:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:36:21,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:21,046 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:21,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 18:36:21,046 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:21,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:21,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1911636382, now seen corresponding path program 1 times [2024-11-22 18:36:21,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:21,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870031292] [2024-11-22 18:36:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:21,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:21,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870031292] [2024-11-22 18:36:21,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870031292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:21,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:21,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:36:21,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524245559] [2024-11-22 18:36:21,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:21,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:36:21,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:21,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:36:21,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:36:21,206 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2024-11-22 18:36:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:21,292 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2024-11-22 18:36:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:36:21,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 18:36:21,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:21,293 INFO L225 Difference]: With dead ends: 69 [2024-11-22 18:36:21,293 INFO L226 Difference]: Without dead ends: 69 [2024-11-22 18:36:21,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:36:21,294 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:21,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 185 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:36:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-22 18:36:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2024-11-22 18:36:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 49 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) [2024-11-22 18:36:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-22 18:36:21,302 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 13 [2024-11-22 18:36:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:21,302 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-22 18:36:21,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2024-11-22 18:36:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-22 18:36:21,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:36:21,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:21,303 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:21,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 18:36:21,303 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:21,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1210571804, now seen corresponding path program 1 times [2024-11-22 18:36:21,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:21,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890998644] [2024-11-22 18:36:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:21,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:21,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890998644] [2024-11-22 18:36:21,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890998644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:36:21,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61888401] [2024-11-22 18:36:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:21,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:36:21,672 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) [2024-11-22 18:36:21,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:36:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:21,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 18:36:21,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:36:21,845 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 14 treesize of output 10 [2024-11-22 18:36:22,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:36:22,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2024-11-22 18:36:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:22,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:36:22,530 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 13 [2024-11-22 18:36:22,540 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 20 treesize of output 16 [2024-11-22 18:36:22,552 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 13 treesize of output 9 [2024-11-22 18:36:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61888401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:36:22,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:36:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-22 18:36:22,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125355817] [2024-11-22 18:36:22,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:36:22,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 18:36:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 18:36:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-11-22 18:36:22,569 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:22,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:22,933 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-22 18:36:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:36:22,933 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 18:36:22,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:22,935 INFO L225 Difference]: With dead ends: 55 [2024-11-22 18:36:22,935 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 18:36:22,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2024-11-22 18:36:22,936 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 104 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:22,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 246 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:36:22,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 18:36:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-22 18:36:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-11-22 18:36:22,944 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 13 [2024-11-22 18:36:22,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:22,945 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-11-22 18:36:22,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-11-22 18:36:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:36:22,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:22,946 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:22,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 18:36:23,149 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,SelfDestructingSolverStorable12 [2024-11-22 18:36:23,150 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:23,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash 167227485, now seen corresponding path program 1 times [2024-11-22 18:36:23,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:23,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789456837] [2024-11-22 18:36:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:23,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:23,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789456837] [2024-11-22 18:36:23,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789456837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:23,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:23,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:36:23,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682310096] [2024-11-22 18:36:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:23,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:36:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:36:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:36:23,217 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2024-11-22 18:36:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:23,280 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-11-22 18:36:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:36:23,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 [2024-11-22 18:36:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:23,282 INFO L225 Difference]: With dead ends: 54 [2024-11-22 18:36:23,282 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 18:36:23,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:36:23,283 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:23,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:23,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 18:36:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2024-11-22 18:36:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-22 18:36:23,286 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 14 [2024-11-22 18:36:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:23,286 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-22 18:36:23,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2024-11-22 18:36:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-22 18:36:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:36:23,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:23,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:23,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 18:36:23,287 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:23,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:23,288 INFO L85 PathProgramCache]: Analyzing trace with hash 167227486, now seen corresponding path program 1 times [2024-11-22 18:36:23,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:23,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463885560] [2024-11-22 18:36:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:23,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463885560] [2024-11-22 18:36:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463885560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:23,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:36:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403781015] [2024-11-22 18:36:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:23,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:36:23,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:36:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:36:23,406 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2024-11-22 18:36:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:23,440 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2024-11-22 18:36:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:36:23,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2024-11-22 18:36:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:23,441 INFO L225 Difference]: With dead ends: 61 [2024-11-22 18:36:23,441 INFO L226 Difference]: Without dead ends: 61 [2024-11-22 18:36:23,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:36:23,442 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:23,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 154 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-22 18:36:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-22 18:36:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 60 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) [2024-11-22 18:36:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2024-11-22 18:36:23,445 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 14 [2024-11-22 18:36:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:23,445 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2024-11-22 18:36:23,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2024-11-22 18:36:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2024-11-22 18:36:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:36:23,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:23,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:23,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 18:36:23,447 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:23,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash 868292064, now seen corresponding path program 1 times [2024-11-22 18:36:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:23,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846360790] [2024-11-22 18:36:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:23,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846360790] [2024-11-22 18:36:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846360790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:23,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:23,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 18:36:23,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443608961] [2024-11-22 18:36:23,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:23,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 18:36:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 18:36:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:36:23,798 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 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) [2024-11-22 18:36:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:23,930 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2024-11-22 18:36:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 18:36:23,930 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 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 [2024-11-22 18:36:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:23,931 INFO L225 Difference]: With dead ends: 64 [2024-11-22 18:36:23,931 INFO L226 Difference]: Without dead ends: 64 [2024-11-22 18:36:23,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:36:23,932 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:23,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 152 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:36:23,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-22 18:36:23,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-22 18:36:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.280701754385965) internal successors, (73), 63 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2024-11-22 18:36:23,935 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 14 [2024-11-22 18:36:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:23,935 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2024-11-22 18:36:23,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 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) [2024-11-22 18:36:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2024-11-22 18:36:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:36:23,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:23,936 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:23,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 18:36:23,936 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:23,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1126979712, now seen corresponding path program 1 times [2024-11-22 18:36:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:23,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618861422] [2024-11-22 18:36:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618861422] [2024-11-22 18:36:24,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618861422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:36:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383204013] [2024-11-22 18:36:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:24,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:24,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:36:24,221 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) [2024-11-22 18:36:24,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:36:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:24,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-22 18:36:24,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:36:24,331 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 [2024-11-22 18:36:24,338 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 7 [2024-11-22 18:36:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:24,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:36:24,849 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:36:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:24,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383204013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:36:24,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:36:24,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-22 18:36:24,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701846655] [2024-11-22 18:36:24,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:36:24,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 18:36:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 18:36:24,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-22 18:36:24,888 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 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) [2024-11-22 18:36:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:25,071 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2024-11-22 18:36:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 18:36:25,072 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-22 18:36:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:25,073 INFO L225 Difference]: With dead ends: 64 [2024-11-22 18:36:25,073 INFO L226 Difference]: Without dead ends: 64 [2024-11-22 18:36:25,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-22 18:36:25,074 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:25,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 149 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:36:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-22 18:36:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-22 18:36:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.263157894736842) internal successors, (72), 62 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-11-22 18:36:25,077 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 14 [2024-11-22 18:36:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:25,077 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-11-22 18:36:25,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 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) [2024-11-22 18:36:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-11-22 18:36:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 18:36:25,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:25,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:25,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 18:36:25,278 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,SelfDestructingSolverStorable16 [2024-11-22 18:36:25,279 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:25,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1281625306, now seen corresponding path program 1 times [2024-11-22 18:36:25,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:25,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103942792] [2024-11-22 18:36:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:25,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:36:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103942792] [2024-11-22 18:36:25,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103942792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:25,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:25,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:36:25,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985003838] [2024-11-22 18:36:25,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:25,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:36:25,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:36:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:36:25,309 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:25,318 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2024-11-22 18:36:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:36:25,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-22 18:36:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:25,320 INFO L225 Difference]: With dead ends: 62 [2024-11-22 18:36:25,320 INFO L226 Difference]: Without dead ends: 62 [2024-11-22 18:36:25,320 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 [2024-11-22 18:36:25,320 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:25,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-22 18:36:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-22 18:36:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 61 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) [2024-11-22 18:36:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-22 18:36:25,323 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 16 [2024-11-22 18:36:25,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:25,323 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-22 18:36:25,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-22 18:36:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:36:25,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:25,324 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:25,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 18:36:25,325 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:25,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:25,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1299162897, now seen corresponding path program 1 times [2024-11-22 18:36:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:25,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485652063] [2024-11-22 18:36:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:25,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485652063] [2024-11-22 18:36:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485652063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:36:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510326214] [2024-11-22 18:36:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:25,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:25,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:36:25,939 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) [2024-11-22 18:36:25,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:36:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:26,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-22 18:36:26,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:36:26,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:36:26,058 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 7 [2024-11-22 18:36:26,063 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 [2024-11-22 18:36:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:26,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:36:26,948 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:36:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:27,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510326214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:36:27,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:36:27,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2024-11-22 18:36:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233206298] [2024-11-22 18:36:27,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:36:27,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 18:36:27,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 18:36:27,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 18:36:27,018 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 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) [2024-11-22 18:36:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:28,098 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2024-11-22 18:36:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-22 18:36:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 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) Word has length 17 [2024-11-22 18:36:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:28,099 INFO L225 Difference]: With dead ends: 98 [2024-11-22 18:36:28,099 INFO L226 Difference]: Without dead ends: 98 [2024-11-22 18:36:28,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 18:36:28,101 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:28,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 317 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:36:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-22 18:36:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2024-11-22 18:36:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 83 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) [2024-11-22 18:36:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2024-11-22 18:36:28,105 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 17 [2024-11-22 18:36:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:28,105 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2024-11-22 18:36:28,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 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) [2024-11-22 18:36:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2024-11-22 18:36:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:36:28,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:28,107 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:28,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 18:36:28,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:28,312 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:28,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash 93241532, now seen corresponding path program 2 times [2024-11-22 18:36:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880586313] [2024-11-22 18:36:28,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:36:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:28,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:36:28,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:36:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:28,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:28,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880586313] [2024-11-22 18:36:28,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880586313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:36:28,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359427469] [2024-11-22 18:36:28,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:36:28,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:28,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:36:28,771 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) [2024-11-22 18:36:28,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:36:28,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:36:28,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:36:28,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-22 18:36:28,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:36:28,873 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 14 treesize of output 10 [2024-11-22 18:36:29,267 INFO L349 Elim1Store]: treesize reduction 4, result has 81.8 percent of original size [2024-11-22 18:36:29,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2024-11-22 18:36:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:29,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:36:29,808 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 29 treesize of output 25 [2024-11-22 18:36:29,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2024-11-22 18:36:29,822 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 5 treesize of output 3 [2024-11-22 18:36:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:29,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359427469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:36:29,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:36:29,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2024-11-22 18:36:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820071531] [2024-11-22 18:36:29,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:36:29,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 18:36:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 18:36:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2024-11-22 18:36:29,842 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand has 29 states, 28 states have (on average 1.5) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:30,819 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2024-11-22 18:36:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 18:36:30,820 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-22 18:36:30,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:30,821 INFO L225 Difference]: With dead ends: 102 [2024-11-22 18:36:30,821 INFO L226 Difference]: Without dead ends: 102 [2024-11-22 18:36:30,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=213, Invalid=1347, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 18:36:30,822 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 132 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:30,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 353 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:36:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-22 18:36:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 83. [2024-11-22 18:36:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 82 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-11-22 18:36:30,827 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 17 [2024-11-22 18:36:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:30,827 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-11-22 18:36:30,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-11-22 18:36:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 18:36:30,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:30,828 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:30,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 18:36:31,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:31,029 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:31,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:31,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1359674007, now seen corresponding path program 1 times [2024-11-22 18:36:31,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:31,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318067672] [2024-11-22 18:36:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:31,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:36:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318067672] [2024-11-22 18:36:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318067672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:31,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:31,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:36:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046158119] [2024-11-22 18:36:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:31,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:36:31,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:36:31,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:36:31,057 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:31,068 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2024-11-22 18:36:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:36:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-22 18:36:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:31,070 INFO L225 Difference]: With dead ends: 82 [2024-11-22 18:36:31,070 INFO L226 Difference]: Without dead ends: 82 [2024-11-22 18:36:31,070 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 [2024-11-22 18:36:31,071 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:31,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:31,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-22 18:36:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-22 18:36:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 81 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-22 18:36:31,074 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 19 [2024-11-22 18:36:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:31,074 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-22 18:36:31,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-22 18:36:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:36:31,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:31,076 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:31,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 18:36:31,076 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:31,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash 799778846, now seen corresponding path program 1 times [2024-11-22 18:36:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:31,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746282111] [2024-11-22 18:36:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:31,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:36:31,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746282111] [2024-11-22 18:36:31,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746282111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:31,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:31,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:36:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241388410] [2024-11-22 18:36:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:31,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:36:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:36:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:36:31,143 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:31,163 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2024-11-22 18:36:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:36:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-22 18:36:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:31,164 INFO L225 Difference]: With dead ends: 81 [2024-11-22 18:36:31,164 INFO L226 Difference]: Without dead ends: 81 [2024-11-22 18:36:31,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:36:31,164 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:31,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-22 18:36:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-22 18:36:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 80 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2024-11-22 18:36:31,167 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 20 [2024-11-22 18:36:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:31,169 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2024-11-22 18:36:31,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2024-11-22 18:36:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 18:36:31,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:31,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:31,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 18:36:31,170 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:31,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:31,171 INFO L85 PathProgramCache]: Analyzing trace with hash -976659444, now seen corresponding path program 1 times [2024-11-22 18:36:31,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:31,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858315673] [2024-11-22 18:36:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:31,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:36:31,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858315673] [2024-11-22 18:36:31,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858315673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:36:31,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:36:31,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:36:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814379612] [2024-11-22 18:36:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:36:31,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:36:31,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:31,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:36:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:36:31,324 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:31,355 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2024-11-22 18:36:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:36:31,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-22 18:36:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:31,356 INFO L225 Difference]: With dead ends: 80 [2024-11-22 18:36:31,356 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 18:36:31,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:36:31,357 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:31,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 55 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:36:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 18:36:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-22 18:36:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-11-22 18:36:31,358 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 21 [2024-11-22 18:36:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:31,359 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-11-22 18:36:31,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-11-22 18:36:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 18:36:31,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:31,359 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:31,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 18:36:31,360 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:31,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash 666361129, now seen corresponding path program 1 times [2024-11-22 18:36:31,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:31,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551411524] [2024-11-22 18:36:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551411524] [2024-11-22 18:36:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551411524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:36:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084704790] [2024-11-22 18:36:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:36:32,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:32,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:36:32,262 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) [2024-11-22 18:36:32,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:36:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:36:32,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-22 18:36:32,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:36:32,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:36:32,396 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 7 [2024-11-22 18:36:32,400 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 [2024-11-22 18:36:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:33,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:36:34,811 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:36:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084704790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:36:34,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:36:34,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-22 18:36:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567535881] [2024-11-22 18:36:34,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:36:34,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-22 18:36:34,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-22 18:36:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2326, Unknown=0, NotChecked=0, Total=2550 [2024-11-22 18:36:34,890 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 51 states, 50 states have (on average 1.58) internal successors, (79), 51 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:37,506 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2024-11-22 18:36:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-22 18:36:37,507 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.58) internal successors, (79), 51 states have internal predecessors, (79), 0 states have call successors, (0), 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 27 [2024-11-22 18:36:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:37,507 INFO L225 Difference]: With dead ends: 102 [2024-11-22 18:36:37,507 INFO L226 Difference]: Without dead ends: 102 [2024-11-22 18:36:37,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1645 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=846, Invalid=8084, Unknown=0, NotChecked=0, Total=8930 [2024-11-22 18:36:37,514 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:37,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 126 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 18:36:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-22 18:36:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 64. [2024-11-22 18:36:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-11-22 18:36:37,516 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 27 [2024-11-22 18:36:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:37,517 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-11-22 18:36:37,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.58) internal successors, (79), 51 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:36:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-11-22 18:36:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 18:36:37,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:36:37,517 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:37,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 18:36:37,718 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,SelfDestructingSolverStorable23 [2024-11-22 18:36:37,718 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-22 18:36:37,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:36:37,719 INFO L85 PathProgramCache]: Analyzing trace with hash 907371951, now seen corresponding path program 2 times [2024-11-22 18:36:37,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:36:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303702928] [2024-11-22 18:36:37,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:36:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:36:37,745 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:36:37,745 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:36:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:38,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:36:38,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303702928] [2024-11-22 18:36:38,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303702928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:36:38,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718403191] [2024-11-22 18:36:38,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:36:38,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:38,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:36:38,844 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) [2024-11-22 18:36:38,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 18:36:38,932 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:36:38,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:36:38,936 WARN L253 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-22 18:36:38,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:36:38,978 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-22 18:36:38,978 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 1 case distinctions, treesize of input 13 treesize of output 11 [2024-11-22 18:36:38,991 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 [2024-11-22 18:36:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:39,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:36:40,875 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:36:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:36:40,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718403191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:36:40,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:36:40,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 18] total 57 [2024-11-22 18:36:40,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33224085] [2024-11-22 18:36:40,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:36:40,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-22 18:36:40,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:36:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-22 18:36:40,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=3042, Unknown=0, NotChecked=0, Total=3306 [2024-11-22 18:36:40,983 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 58 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 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) [2024-11-22 18:36:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:36:42,804 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2024-11-22 18:36:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-22 18:36:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 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) Word has length 29 [2024-11-22 18:36:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:36:42,804 INFO L225 Difference]: With dead ends: 96 [2024-11-22 18:36:42,804 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 18:36:42,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=805, Invalid=7205, Unknown=0, NotChecked=0, Total=8010 [2024-11-22 18:36:42,807 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:36:42,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 169 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 18:36:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 18:36:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 18:36:42,808 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) [2024-11-22 18:36:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 18:36:42,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2024-11-22 18:36:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:36:42,808 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 18:36:42,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 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) [2024-11-22 18:36:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 18:36:42,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 18:36:42,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2024-11-22 18:36:42,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2024-11-22 18:36:42,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-11-22 18:36:42,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-11-22 18:36:42,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (6 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (5 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (4 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (3 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (2 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (1 of 15 remaining) [2024-11-22 18:36:42,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-22 18:36:42,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 18:36:43,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:36:43,016 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:36:43,017 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 18:36:43,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 06:36:43 BoogieIcfgContainer [2024-11-22 18:36:43,019 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 18:36:43,020 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 18:36:43,020 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 18:36:43,020 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 18:36:43,021 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:36:18" (3/4) ... [2024-11-22 18:36:43,022 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 18:36:43,029 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 18:36:43,031 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-22 18:36:43,031 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-22 18:36:43,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 18:36:43,114 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 18:36:43,114 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 18:36:43,114 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 18:36:43,117 INFO L158 Benchmark]: Toolchain (without parser) took 25925.28ms. Allocated memory was 167.8MB in the beginning and 331.4MB in the end (delta: 163.6MB). Free memory was 111.3MB in the beginning and 123.4MB in the end (delta: -12.1MB). Peak memory consumption was 153.9MB. Max. memory is 16.1GB. [2024-11-22 18:36:43,117 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 129.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 18:36:43,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.29ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 90.8MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-22 18:36:43,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.69ms. Allocated memory is still 167.8MB. Free memory was 90.8MB in the beginning and 88.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 18:36:43,118 INFO L158 Benchmark]: Boogie Preprocessor took 53.12ms. Allocated memory is still 167.8MB. Free memory was 88.7MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 18:36:43,118 INFO L158 Benchmark]: RCFGBuilder took 448.33ms. Allocated memory is still 167.8MB. Free memory was 86.7MB in the beginning and 71.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-22 18:36:43,118 INFO L158 Benchmark]: TraceAbstraction took 24789.56ms. Allocated memory was 167.8MB in the beginning and 331.4MB in the end (delta: 163.6MB). Free memory was 70.8MB in the beginning and 128.9MB in the end (delta: -58.1MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. [2024-11-22 18:36:43,118 INFO L158 Benchmark]: Witness Printer took 94.45ms. Allocated memory is still 331.4MB. Free memory was 128.9MB in the beginning and 123.4MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-22 18:36:43,121 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 129.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.29ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 90.8MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.69ms. Allocated memory is still 167.8MB. Free memory was 90.8MB in the beginning and 88.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.12ms. Allocated memory is still 167.8MB. Free memory was 88.7MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.33ms. Allocated memory is still 167.8MB. Free memory was 86.7MB in the beginning and 71.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24789.56ms. Allocated memory was 167.8MB in the beginning and 331.4MB in the end (delta: 163.6MB). Free memory was 70.8MB in the beginning and 128.9MB in the end (delta: -58.1MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. * Witness Printer took 94.45ms. Allocated memory is still 331.4MB. Free memory was 128.9MB in the beginning and 123.4MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 395]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 395]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 395]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 396]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 396]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 396]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 382]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 24.7s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 569 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 569 mSDsluCounter, 2982 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2345 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3530 IncrementalHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 637 mSDtfsCounter, 3530 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 520 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4638 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=19, InterpolantAutomatonStates: 278, 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, 25 MinimizatonAttempts, 112 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 467 NumberOfCodeBlocks, 467 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 547 ConstructedInterpolants, 14 QuantifiedInterpolants, 8192 SizeOfPredicates, 68 NumberOfNonLiveVariables, 1014 ConjunctsInSsa, 415 ConjunctsInUnsatCore, 37 InterpolantComputations, 19 PerfectInterpolantSequences, 36/257 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 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 18:36:43,149 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