./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef4a52e45666a829b602608a46cff9c8137910dd58bdfaebe016ce17984d1ac8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:45:55,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:45:55,904 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:45:55,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:45:55,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:45:55,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:45:55,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:45:55,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:45:55,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:45:55,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:45:55,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:45:55,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:45:55,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:45:55,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:45:55,949 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:45:55,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:45:55,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:45:55,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:45:55,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:45:55,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:45:55,951 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:45:55,951 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:45:55,952 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:45:55,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:45:55,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:45:55,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:45:55,953 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:45:55,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:45:55,953 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:45:55,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:45:55,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:45:55,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:45:55,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:45:55,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:45:55,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:45:55,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:45:55,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:45:55,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:45:55,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:45:55,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:45:55,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:45:55,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:45:55,957 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef4a52e45666a829b602608a46cff9c8137910dd58bdfaebe016ce17984d1ac8 [2024-11-19 06:45:56,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:45:56,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:45:56,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:45:56,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:45:56,220 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:45:56,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2024-11-19 06:45:57,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:45:57,926 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:45:57,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2024-11-19 06:45:57,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b417ce1/fc50968f0cce4c98a2290ac41f0f0148/FLAG826af3329 [2024-11-19 06:45:58,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b417ce1/fc50968f0cce4c98a2290ac41f0f0148 [2024-11-19 06:45:58,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:45:58,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:45:58,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:45:58,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:45:58,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:45:58,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1067265f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58, skipping insertion in model container [2024-11-19 06:45:58,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:45:58,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:45:58,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:45:58,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:45:58,572 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:45:58,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58 WrapperNode [2024-11-19 06:45:58,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:45:58,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:45:58,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:45:58,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:45:58,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,600 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-11-19 06:45:58,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:45:58,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:45:58,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:45:58,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:45:58,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,625 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 06:45:58,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,626 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,632 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:45:58,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:45:58,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:45:58,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:45:58,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2024-11-19 06:45:58,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:45:58,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:45:58,687 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) [2024-11-19 06:45:58,692 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 [2024-11-19 06:45:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:45:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:45:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:45:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:45:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:45:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:45:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:45:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:45:58,814 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:45:58,816 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:45:59,006 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-19 06:45:59,006 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:45:59,017 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:45:59,018 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 06:45:59,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:59 BoogieIcfgContainer [2024-11-19 06:45:59,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:45:59,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:45:59,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:45:59,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:45:59,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:45:58" (1/3) ... [2024-11-19 06:45:59,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364f132f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:45:59, skipping insertion in model container [2024-11-19 06:45:59,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (2/3) ... [2024-11-19 06:45:59,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364f132f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:45:59, skipping insertion in model container [2024-11-19 06:45:59,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:59" (3/3) ... [2024-11-19 06:45:59,028 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration.c [2024-11-19 06:45:59,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:45:59,044 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 06:45:59,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:45:59,086 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;@55082efa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:45:59,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 06:45:59,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:45:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-19 06:45:59,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:45:59,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 06:45:59,095 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:45:59,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:45:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2024-11-19 06:45:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:45:59,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935565209] [2024-11-19 06:45:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:59,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:45:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:45:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:45:59,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:45:59,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935565209] [2024-11-19 06:45:59,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935565209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:45:59,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:45:59,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:45:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590420477] [2024-11-19 06:45:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:45:59,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:45:59,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:45:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:45:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:45:59,398 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:45:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:45:59,450 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-19 06:45:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:45:59,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-11-19 06:45:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:45:59,460 INFO L225 Difference]: With dead ends: 38 [2024-11-19 06:45:59,460 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:45:59,463 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 [2024-11-19 06:45:59,466 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:45:59,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:45:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:45:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2024-11-19 06:45:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:45:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-19 06:45:59,492 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 5 [2024-11-19 06:45:59,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:45:59,493 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-19 06:45:59,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:45:59,493 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-19 06:45:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:45:59,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:45:59,493 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:45:59,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:45:59,494 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:45:59,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:45:59,495 INFO L85 PathProgramCache]: Analyzing trace with hash 889631015, now seen corresponding path program 1 times [2024-11-19 06:45:59,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:45:59,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519636655] [2024-11-19 06:45:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:45:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:45:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:45:59,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:45:59,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519636655] [2024-11-19 06:45:59,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519636655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:45:59,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:45:59,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:45:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701412575] [2024-11-19 06:45:59,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:45:59,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:45:59,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:45:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:45:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:45:59,573 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2024-11-19 06:45:59,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:45:59,620 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-19 06:45:59,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:45:59,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2024-11-19 06:45:59,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:45:59,622 INFO L225 Difference]: With dead ends: 53 [2024-11-19 06:45:59,622 INFO L226 Difference]: Without dead ends: 53 [2024-11-19 06:45:59,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:45:59,624 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:45:59,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:45:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-19 06:45:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2024-11-19 06:45:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.48) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:45:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-19 06:45:59,634 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2024-11-19 06:45:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:45:59,634 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-19 06:45:59,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2024-11-19 06:45:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-19 06:45:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:45:59,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:45:59,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:45:59,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:45:59,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:45:59,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:45:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2024-11-19 06:45:59,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:45:59,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968080166] [2024-11-19 06:45:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:59,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:45:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:45:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:45:59,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:45:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968080166] [2024-11-19 06:45:59,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968080166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:45:59,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:45:59,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:45:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210757042] [2024-11-19 06:45:59,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:45:59,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:45:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:45:59,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:45:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:45:59,788 INFO L87 Difference]: Start difference. First operand 33 states and 37 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) [2024-11-19 06:45:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:45:59,839 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-11-19 06:45:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:45:59,859 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 [2024-11-19 06:45:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:45:59,861 INFO L225 Difference]: With dead ends: 32 [2024-11-19 06:45:59,862 INFO L226 Difference]: Without dead ends: 32 [2024-11-19 06:45:59,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:45:59,865 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:45:59,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:45:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-19 06:45:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-19 06:45:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:45:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-19 06:45:59,872 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2024-11-19 06:45:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:45:59,874 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-19 06:45:59,875 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) [2024-11-19 06:45:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-19 06:45:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:45:59,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:45:59,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:45:59,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:45:59,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:45:59,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:45:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2024-11-19 06:45:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:45:59,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595860379] [2024-11-19 06:45:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:59,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:45:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:46:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595860379] [2024-11-19 06:46:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595860379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:46:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:46:00,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632184508] [2024-11-19 06:46:00,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:00,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:46:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:46:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:46:00,066 INFO L87 Difference]: Start difference. First operand 32 states and 36 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) [2024-11-19 06:46:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:00,148 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-19 06:46:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:46:00,149 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 [2024-11-19 06:46:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:00,151 INFO L225 Difference]: With dead ends: 36 [2024-11-19 06:46:00,151 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:46:00,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:46:00,152 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:00,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 31 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:46:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-19 06:46:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-19 06:46:00,159 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2024-11-19 06:46:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:00,159 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-19 06:46:00,159 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) [2024-11-19 06:46:00,160 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-19 06:46:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:46:00,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:00,161 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:00,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:46:00,161 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:00,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2024-11-19 06:46:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:00,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453861981] [2024-11-19 06:46:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:46:00,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:00,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453861981] [2024-11-19 06:46:00,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453861981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:00,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:46:00,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:46:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287323444] [2024-11-19 06:46:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:00,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:46:00,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:46:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:46:00,255 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:00,336 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-19 06:46:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:46:00,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 06:46:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:00,338 INFO L225 Difference]: With dead ends: 55 [2024-11-19 06:46:00,338 INFO L226 Difference]: Without dead ends: 55 [2024-11-19 06:46:00,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:46:00,340 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:00,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-19 06:46:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2024-11-19 06:46:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.4074074074074074) 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) [2024-11-19 06:46:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-19 06:46:00,345 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 7 [2024-11-19 06:46:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:00,345 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-19 06:46:00,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-19 06:46:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:46:00,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:00,346 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:00,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:46:00,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:00,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1480744241, now seen corresponding path program 1 times [2024-11-19 06:46:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:00,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450007017] [2024-11-19 06:46:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:00,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:46:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:00,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450007017] [2024-11-19 06:46:00,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450007017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:00,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072834293] [2024-11-19 06:46:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:00,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:00,451 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) [2024-11-19 06:46:00,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:46:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:00,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 06:46:00,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:46:00,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:46:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072834293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:00,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:46:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-19 06:46:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332439227] [2024-11-19 06:46:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:00,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:46:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:46:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:46:00,653 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2024-11-19 06:46:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:00,749 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2024-11-19 06:46:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:46:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2024-11-19 06:46:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:00,751 INFO L225 Difference]: With dead ends: 49 [2024-11-19 06:46:00,751 INFO L226 Difference]: Without dead ends: 49 [2024-11-19 06:46:00,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:46:00,752 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:00,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-19 06:46:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2024-11-19 06:46:00,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-19 06:46:00,760 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 10 [2024-11-19 06:46:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:00,760 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-19 06:46:00,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2024-11-19 06:46:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-19 06:46:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:46:00,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:00,764 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:00,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:46:00,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 06:46:00,965 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:00,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1361088610, now seen corresponding path program 1 times [2024-11-19 06:46:00,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:00,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910894614] [2024-11-19 06:46:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:46:01,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:01,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910894614] [2024-11-19 06:46:01,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910894614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:01,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:46:01,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:46:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601989001] [2024-11-19 06:46:01,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:01,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:46:01,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:46:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:46:01,082 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:01,106 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-11-19 06:46:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:46:01,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 06:46:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:01,108 INFO L225 Difference]: With dead ends: 37 [2024-11-19 06:46:01,108 INFO L226 Difference]: Without dead ends: 37 [2024-11-19 06:46:01,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:46:01,109 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:01,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 22 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:46:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-19 06:46:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-19 06:46:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.28125) 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) [2024-11-19 06:46:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-19 06:46:01,113 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 12 [2024-11-19 06:46:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:01,113 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-19 06:46:01,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-19 06:46:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:46:01,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:01,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:01,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:46:01,114 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:01,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1361088609, now seen corresponding path program 1 times [2024-11-19 06:46:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:01,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390511597] [2024-11-19 06:46:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:01,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:01,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390511597] [2024-11-19 06:46:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390511597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:01,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:46:01,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:46:01,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526075977] [2024-11-19 06:46:01,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:01,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:46:01,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:01,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:46:01,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:46:01,208 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:01,235 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-19 06:46:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:46:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 06:46:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:01,236 INFO L225 Difference]: With dead ends: 42 [2024-11-19 06:46:01,236 INFO L226 Difference]: Without dead ends: 42 [2024-11-19 06:46:01,237 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 [2024-11-19 06:46:01,237 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 36 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 [2024-11-19 06:46:01,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:46:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-19 06:46:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-19 06:46:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-19 06:46:01,241 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2024-11-19 06:46:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:01,241 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-19 06:46:01,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-19 06:46:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:46:01,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:01,242 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:01,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:46:01,243 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:01,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1343012932, now seen corresponding path program 1 times [2024-11-19 06:46:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:01,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311943223] [2024-11-19 06:46:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:01,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311943223] [2024-11-19 06:46:01,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311943223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:01,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364436211] [2024-11-19 06:46:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:01,337 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) [2024-11-19 06:46:01,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:46:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:01,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 06:46:01,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:01,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:01,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-19 06:46:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364436211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:01,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 06:46:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814802390] [2024-11-19 06:46:01,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:01,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:46:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:46:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:46:01,656 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 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) [2024-11-19 06:46:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:01,746 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-19 06:46:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:46:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 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) Word has length 18 [2024-11-19 06:46:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:01,747 INFO L225 Difference]: With dead ends: 45 [2024-11-19 06:46:01,747 INFO L226 Difference]: Without dead ends: 45 [2024-11-19 06:46:01,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:46:01,748 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:01,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 39 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-19 06:46:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2024-11-19 06:46:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.25) internal successors, (45), 40 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) [2024-11-19 06:46:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-19 06:46:01,754 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2024-11-19 06:46:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:01,754 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-19 06:46:01,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 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) [2024-11-19 06:46:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-19 06:46:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:46:01,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:01,758 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:01,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:46:01,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-19 06:46:01,962 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:01,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1315219428, now seen corresponding path program 1 times [2024-11-19 06:46:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721992807] [2024-11-19 06:46:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:02,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721992807] [2024-11-19 06:46:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721992807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937012758] [2024-11-19 06:46:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:02,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:02,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:02,040 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) [2024-11-19 06:46:02,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:46:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:02,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 06:46:02,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:02,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937012758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:02,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:02,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-19 06:46:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493105018] [2024-11-19 06:46:02,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:02,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:46:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:46:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:46:02,193 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-11-19 06:46:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:02,323 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2024-11-19 06:46:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:46:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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 19 [2024-11-19 06:46:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:02,324 INFO L225 Difference]: With dead ends: 48 [2024-11-19 06:46:02,324 INFO L226 Difference]: Without dead ends: 48 [2024-11-19 06:46:02,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:46:02,325 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:02,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 51 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-19 06:46:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-11-19 06:46:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 43 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) [2024-11-19 06:46:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-11-19 06:46:02,329 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 19 [2024-11-19 06:46:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:02,330 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-11-19 06:46:02,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-11-19 06:46:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-11-19 06:46:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:46:02,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:02,330 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] [2024-11-19 06:46:02,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 06:46:02,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:02,531 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:02,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2077891072, now seen corresponding path program 1 times [2024-11-19 06:46:02,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:02,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250106000] [2024-11-19 06:46:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:02,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250106000] [2024-11-19 06:46:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250106000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701549563] [2024-11-19 06:46:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:02,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:02,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:02,598 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) [2024-11-19 06:46:02,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:46:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:02,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 06:46:02,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:02,862 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_16| Int) (|v_ULTIMATE.start_main_~#mask~0#1.base_11| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_16| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_11| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_16| v_DerPreprocessor_1) |v_ULTIMATE.start_main_~#mask~0#1.base_11| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#b~0#1.base_16|) v_DerPreprocessor_1) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_16|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_11|) 0))) is different from true [2024-11-19 06:46:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:02,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:46:02,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701549563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:02,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:46:02,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-19 06:46:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332153056] [2024-11-19 06:46:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:02,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:46:02,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:46:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2024-11-19 06:46:02,866 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2024-11-19 06:46:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:02,894 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-19 06:46:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:46:02,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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 [2024-11-19 06:46:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:02,896 INFO L225 Difference]: With dead ends: 45 [2024-11-19 06:46:02,896 INFO L226 Difference]: Without dead ends: 43 [2024-11-19 06:46:02,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2024-11-19 06:46:02,898 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:02,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2024-11-19 06:46:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-19 06:46:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-19 06:46:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 42 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) [2024-11-19 06:46:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-11-19 06:46:02,905 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 21 [2024-11-19 06:46:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:02,905 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-11-19 06:46:02,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2024-11-19 06:46:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-11-19 06:46:02,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:46:02,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:02,907 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:02,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:46:03,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:03,108 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:03,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:03,108 INFO L85 PathProgramCache]: Analyzing trace with hash -9763705, now seen corresponding path program 1 times [2024-11-19 06:46:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:03,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218266573] [2024-11-19 06:46:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:46:03,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218266573] [2024-11-19 06:46:03,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218266573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790017926] [2024-11-19 06:46:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:03,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:03,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:03,183 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) [2024-11-19 06:46:03,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:46:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:03,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 06:46:03,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:03,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 06:46:03,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 06:46:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:46:03,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:03,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 06:46:03,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 06:46:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:46:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790017926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:03,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:03,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 10] total 19 [2024-11-19 06:46:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270586586] [2024-11-19 06:46:03,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:03,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 06:46:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 06:46:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:46:03,593 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2024-11-19 06:46:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:03,740 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2024-11-19 06:46:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:46:03,741 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) Word has length 22 [2024-11-19 06:46:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:03,741 INFO L225 Difference]: With dead ends: 70 [2024-11-19 06:46:03,741 INFO L226 Difference]: Without dead ends: 70 [2024-11-19 06:46:03,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:46:03,742 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:03,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 87 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-19 06:46:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 49. [2024-11-19 06:46:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2024-11-19 06:46:03,746 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 22 [2024-11-19 06:46:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:03,746 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2024-11-19 06:46:03,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2024-11-19 06:46:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2024-11-19 06:46:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:46:03,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:03,747 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:03,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 06:46:03,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 06:46:03,952 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:03,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:03,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1532050453, now seen corresponding path program 1 times [2024-11-19 06:46:03,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:03,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465888279] [2024-11-19 06:46:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:46:04,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465888279] [2024-11-19 06:46:04,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465888279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796436821] [2024-11-19 06:46:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:04,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:04,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:04,020 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) [2024-11-19 06:46:04,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:46:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:04,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 06:46:04,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:04,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:46:04,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796436821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:04,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:04,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 3] total 8 [2024-11-19 06:46:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971522121] [2024-11-19 06:46:04,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:04,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:46:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:46:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:46:04,183 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 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) [2024-11-19 06:46:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:04,363 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2024-11-19 06:46:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:46:04,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 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) Word has length 22 [2024-11-19 06:46:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:04,364 INFO L225 Difference]: With dead ends: 96 [2024-11-19 06:46:04,364 INFO L226 Difference]: Without dead ends: 96 [2024-11-19 06:46:04,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:46:04,365 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 82 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:04,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 42 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-19 06:46:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2024-11-19 06:46:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.2) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-19 06:46:04,369 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 22 [2024-11-19 06:46:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:04,369 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-19 06:46:04,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 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) [2024-11-19 06:46:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-19 06:46:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 06:46:04,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:04,370 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:04,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:46:04,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:04,571 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:04,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash -248923733, now seen corresponding path program 1 times [2024-11-19 06:46:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:04,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812387321] [2024-11-19 06:46:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:46:04,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:04,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812387321] [2024-11-19 06:46:04,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812387321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:04,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39675147] [2024-11-19 06:46:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:04,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:04,711 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:04,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:46:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:04,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 06:46:04,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:04,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:46:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:46:04,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:46:05,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39675147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:05,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:05,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 06:46:05,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754403776] [2024-11-19 06:46:05,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:05,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:46:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:46:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:46:05,022 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 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) [2024-11-19 06:46:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:05,139 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2024-11-19 06:46:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:46:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 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 23 [2024-11-19 06:46:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:05,141 INFO L225 Difference]: With dead ends: 63 [2024-11-19 06:46:05,141 INFO L226 Difference]: Without dead ends: 63 [2024-11-19 06:46:05,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:46:05,141 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:05,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 55 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-19 06:46:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-19 06:46:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2024-11-19 06:46:05,145 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 23 [2024-11-19 06:46:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:05,146 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2024-11-19 06:46:05,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 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) [2024-11-19 06:46:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2024-11-19 06:46:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:46:05,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:05,148 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:05,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 06:46:05,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:05,350 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:05,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash 631407484, now seen corresponding path program 2 times [2024-11-19 06:46:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:05,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758072893] [2024-11-19 06:46:05,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:05,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:05,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:05,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:05,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:05,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758072893] [2024-11-19 06:46:05,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758072893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:05,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691151001] [2024-11-19 06:46:05,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:05,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:05,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:05,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:05,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:46:05,566 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:05,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:05,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 06:46:05,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:05,582 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 [2024-11-19 06:46:05,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:46:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:05,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691151001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:05,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:05,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 7 [2024-11-19 06:46:05,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278294674] [2024-11-19 06:46:05,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:05,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:46:05,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:46:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:46:05,926 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 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) [2024-11-19 06:46:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:05,991 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions. [2024-11-19 06:46:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:46:05,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 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) Word has length 29 [2024-11-19 06:46:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:05,993 INFO L225 Difference]: With dead ends: 151 [2024-11-19 06:46:05,993 INFO L226 Difference]: Without dead ends: 151 [2024-11-19 06:46:05,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:46:05,994 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:05,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 75 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-19 06:46:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2024-11-19 06:46:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.1857142857142857) internal successors, (166), 144 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 166 transitions. [2024-11-19 06:46:05,999 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 166 transitions. Word has length 29 [2024-11-19 06:46:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:05,999 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 166 transitions. [2024-11-19 06:46:06,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 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) [2024-11-19 06:46:06,000 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 166 transitions. [2024-11-19 06:46:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 06:46:06,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:06,001 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:06,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 06:46:06,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 06:46:06,202 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:06,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 39048524, now seen corresponding path program 2 times [2024-11-19 06:46:06,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:06,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396981100] [2024-11-19 06:46:06,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:06,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:06,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 23 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:46:06,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:06,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396981100] [2024-11-19 06:46:06,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396981100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:06,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701685052] [2024-11-19 06:46:06,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:06,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:06,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:06,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:06,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:46:06,412 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:06,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:06,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:46:06,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 44 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:06,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 44 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:06,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701685052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:06,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:06,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2024-11-19 06:46:06,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427776454] [2024-11-19 06:46:06,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:06,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 06:46:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 06:46:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:46:06,570 INFO L87 Difference]: Start difference. First operand 145 states and 166 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:06,687 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2024-11-19 06:46:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:46:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 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 37 [2024-11-19 06:46:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:06,688 INFO L225 Difference]: With dead ends: 136 [2024-11-19 06:46:06,689 INFO L226 Difference]: Without dead ends: 136 [2024-11-19 06:46:06,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:46:06,689 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:06,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 44 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-19 06:46:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-11-19 06:46:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.1640625) internal successors, (149), 132 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2024-11-19 06:46:06,702 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 37 [2024-11-19 06:46:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:06,702 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2024-11-19 06:46:06,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2024-11-19 06:46:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:46:06,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:06,703 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:06,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 06:46:06,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 06:46:06,904 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:06,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1591695324, now seen corresponding path program 2 times [2024-11-19 06:46:06,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:06,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193104800] [2024-11-19 06:46:06,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:06,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:06,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:06,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:46:06,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193104800] [2024-11-19 06:46:06,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193104800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699057738] [2024-11-19 06:46:06,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:06,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:06,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:06,987 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:06,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:46:07,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:07,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:07,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 06:46:07,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:07,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:07,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-19 06:46:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699057738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:07,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:07,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-19 06:46:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302428300] [2024-11-19 06:46:07,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:07,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 06:46:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 06:46:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:46:07,439 INFO L87 Difference]: Start difference. First operand 133 states and 149 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 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) [2024-11-19 06:46:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:07,621 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2024-11-19 06:46:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:46:07,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 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) Word has length 39 [2024-11-19 06:46:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:07,624 INFO L225 Difference]: With dead ends: 142 [2024-11-19 06:46:07,624 INFO L226 Difference]: Without dead ends: 142 [2024-11-19 06:46:07,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:46:07,625 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 137 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:07,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 101 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-19 06:46:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2024-11-19 06:46:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.1515151515151516) internal successors, (152), 136 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2024-11-19 06:46:07,630 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 39 [2024-11-19 06:46:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:07,630 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2024-11-19 06:46:07,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 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) [2024-11-19 06:46:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2024-11-19 06:46:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 06:46:07,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:07,633 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-19 06:46:07,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 06:46:07,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 06:46:07,837 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:07,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:07,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1454957583, now seen corresponding path program 3 times [2024-11-19 06:46:07,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:07,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207286393] [2024-11-19 06:46:07,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:46:07,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:07,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:46:07,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-19 06:46:08,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:08,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207286393] [2024-11-19 06:46:08,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207286393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:08,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759284300] [2024-11-19 06:46:08,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:46:08,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:08,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:08,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:08,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:46:08,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:46:08,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:08,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 06:46:08,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:08,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:46:08,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:46:08,143 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 [2024-11-19 06:46:08,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 06:46:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-19 06:46:08,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-19 06:46:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759284300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:09,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-19 06:46:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570698645] [2024-11-19 06:46:09,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 06:46:09,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 06:46:09,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-11-19 06:46:09,101 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:09,348 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2024-11-19 06:46:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:46:09,349 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 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 54 [2024-11-19 06:46:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:09,350 INFO L225 Difference]: With dead ends: 136 [2024-11-19 06:46:09,350 INFO L226 Difference]: Without dead ends: 136 [2024-11-19 06:46:09,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:46:09,351 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:09,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 46 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-19 06:46:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-19 06:46:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.128787878787879) internal successors, (149), 135 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2024-11-19 06:46:09,355 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 54 [2024-11-19 06:46:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:09,355 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2024-11-19 06:46:09,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2024-11-19 06:46:09,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:46:09,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:09,360 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-19 06:46:09,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 06:46:09,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 06:46:09,565 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:09,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:09,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2140955129, now seen corresponding path program 2 times [2024-11-19 06:46:09,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:09,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969753013] [2024-11-19 06:46:09,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:09,591 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:09,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 32 proven. 111 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:46:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969753013] [2024-11-19 06:46:09,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969753013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853231360] [2024-11-19 06:46:09,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:09,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:09,737 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:09,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:46:09,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:46:09,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:09,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 06:46:09,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 63 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:46:09,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 63 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 06:46:10,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853231360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:10,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:10,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2024-11-19 06:46:10,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531588014] [2024-11-19 06:46:10,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:10,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:46:10,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:46:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:46:10,076 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:10,308 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2024-11-19 06:46:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:46:10,308 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-19 06:46:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:10,309 INFO L225 Difference]: With dead ends: 132 [2024-11-19 06:46:10,309 INFO L226 Difference]: Without dead ends: 132 [2024-11-19 06:46:10,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:46:10,310 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:10,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 102 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:46:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-19 06:46:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2024-11-19 06:46:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.112) internal successors, (139), 128 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2024-11-19 06:46:10,314 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 55 [2024-11-19 06:46:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:10,314 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2024-11-19 06:46:10,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2024-11-19 06:46:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 06:46:10,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:10,316 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 06:46:10,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 06:46:10,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:10,517 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:10,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash -372658966, now seen corresponding path program 3 times [2024-11-19 06:46:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:10,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898850584] [2024-11-19 06:46:10,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:46:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:10,532 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:46:10,532 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-19 06:46:10,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898850584] [2024-11-19 06:46:10,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898850584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14862771] [2024-11-19 06:46:10,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:46:10,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:10,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:10,654 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:10,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:46:10,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:46:10,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:10,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 06:46:10,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:10,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:46:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:46:10,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2024-11-19 06:46:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 06:46:11,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:46:11,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14862771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:11,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:46:11,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-19 06:46:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535982575] [2024-11-19 06:46:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:11,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:46:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:46:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:46:11,073 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:11,117 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2024-11-19 06:46:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:46:11,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-19 06:46:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:11,118 INFO L225 Difference]: With dead ends: 127 [2024-11-19 06:46:11,118 INFO L226 Difference]: Without dead ends: 127 [2024-11-19 06:46:11,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:46:11,120 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:11,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 36 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:46:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-19 06:46:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 95. [2024-11-19 06:46:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.075268817204301) internal successors, (100), 94 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) [2024-11-19 06:46:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2024-11-19 06:46:11,123 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 60 [2024-11-19 06:46:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:11,123 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2024-11-19 06:46:11,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2024-11-19 06:46:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 06:46:11,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:11,125 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:11,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 06:46:11,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-19 06:46:11,329 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:11,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash -592408120, now seen corresponding path program 1 times [2024-11-19 06:46:11,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:11,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135801437] [2024-11-19 06:46:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:11,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 06:46:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135801437] [2024-11-19 06:46:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135801437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743647248] [2024-11-19 06:46:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:46:11,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:11,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:11,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:11,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:46:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:46:11,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 06:46:11,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 46 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 06:46:11,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 46 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 06:46:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743647248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:11,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:11,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-19 06:46:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451772496] [2024-11-19 06:46:11,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:11,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 06:46:11,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 06:46:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:46:11,802 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:12,030 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2024-11-19 06:46:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:46:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-19 06:46:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:12,031 INFO L225 Difference]: With dead ends: 95 [2024-11-19 06:46:12,031 INFO L226 Difference]: Without dead ends: 95 [2024-11-19 06:46:12,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:46:12,032 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:12,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 72 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:46:12,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-19 06:46:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-19 06:46:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.053763440860215) internal successors, (98), 94 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2024-11-19 06:46:12,034 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 65 [2024-11-19 06:46:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:12,035 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2024-11-19 06:46:12,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2024-11-19 06:46:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-19 06:46:12,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:12,036 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:12,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 06:46:12,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:12,237 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:12,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -600086545, now seen corresponding path program 2 times [2024-11-19 06:46:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328157403] [2024-11-19 06:46:12,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:46:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:12,250 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 06:46:12,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-19 06:46:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328157403] [2024-11-19 06:46:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328157403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:46:12,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:46:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:46:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066153614] [2024-11-19 06:46:12,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:46:12,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:46:12,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:46:12,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:46:12,303 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:12,317 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2024-11-19 06:46:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:46:12,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-19 06:46:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:12,318 INFO L225 Difference]: With dead ends: 94 [2024-11-19 06:46:12,319 INFO L226 Difference]: Without dead ends: 78 [2024-11-19 06:46:12,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:46:12,320 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:12,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:46:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-19 06:46:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-19 06:46:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-11-19 06:46:12,323 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 70 [2024-11-19 06:46:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:12,324 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-11-19 06:46:12,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-11-19 06:46:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-19 06:46:12,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:46:12,324 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-19 06:46:12,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 06:46:12,325 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-19 06:46:12,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:46:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1078992381, now seen corresponding path program 3 times [2024-11-19 06:46:12,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:46:12,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41293139] [2024-11-19 06:46:12,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:46:12,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:46:12,343 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:46:12,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-19 06:46:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:46:12,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41293139] [2024-11-19 06:46:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41293139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:46:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443292228] [2024-11-19 06:46:12,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:46:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:46:12,512 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:46:12,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:46:12,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:46:12,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:46:12,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 06:46:12,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:46:12,611 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 [2024-11-19 06:46:12,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-19 06:46:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 10 proven. 168 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-19 06:46:13,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:46:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-19 06:46:15,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443292228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:46:15,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:46:15,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-11-19 06:46:15,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741000930] [2024-11-19 06:46:15,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:46:15,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:46:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:46:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:46:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:46:15,373 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 21 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:46:15,912 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-11-19 06:46:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:46:15,913 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 0 states have call successors, (0), 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 77 [2024-11-19 06:46:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:46:15,913 INFO L225 Difference]: With dead ends: 77 [2024-11-19 06:46:15,913 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 06:46:15,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2024-11-19 06:46:15,915 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 68 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:46:15,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 24 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:46:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 06:46:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 06:46:15,916 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) [2024-11-19 06:46:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 06:46:15,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2024-11-19 06:46:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:46:15,917 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 06:46:15,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:46:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 06:46:15,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 06:46:15,920 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (7 of 8 remaining) [2024-11-19 06:46:15,920 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-19 06:46:15,920 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-19 06:46:15,920 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2024-11-19 06:46:15,921 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-19 06:46:15,921 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-19 06:46:15,921 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-19 06:46:15,921 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-19 06:46:15,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 06:46:16,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:46:16,124 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:46:16,126 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 06:46:16,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:46:16 BoogieIcfgContainer [2024-11-19 06:46:16,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 06:46:16,129 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 06:46:16,129 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 06:46:16,129 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 06:46:16,129 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:59" (3/4) ... [2024-11-19 06:46:16,131 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 06:46:16,138 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-19 06:46:16,138 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 06:46:16,138 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 06:46:16,138 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 06:46:16,225 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 06:46:16,226 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 06:46:16,226 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 06:46:16,226 INFO L158 Benchmark]: Toolchain (without parser) took 17901.79ms. Allocated memory was 176.2MB in the beginning and 276.8MB in the end (delta: 100.7MB). Free memory was 121.5MB in the beginning and 122.6MB in the end (delta: -1.1MB). Peak memory consumption was 102.7MB. Max. memory is 16.1GB. [2024-11-19 06:46:16,230 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 06:46:16,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.60ms. Allocated memory is still 176.2MB. Free memory was 120.8MB in the beginning and 108.9MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-19 06:46:16,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.87ms. Allocated memory is still 176.2MB. Free memory was 108.9MB in the beginning and 106.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 06:46:16,231 INFO L158 Benchmark]: Boogie Preprocessor took 45.68ms. Allocated memory is still 176.2MB. Free memory was 106.8MB in the beginning and 105.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 06:46:16,231 INFO L158 Benchmark]: RCFGBuilder took 370.86ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 91.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 06:46:16,231 INFO L158 Benchmark]: TraceAbstraction took 17107.00ms. Allocated memory was 176.2MB in the beginning and 276.8MB in the end (delta: 100.7MB). Free memory was 91.4MB in the beginning and 126.6MB in the end (delta: -35.1MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. [2024-11-19 06:46:16,232 INFO L158 Benchmark]: Witness Printer took 97.02ms. Allocated memory is still 276.8MB. Free memory was 126.6MB in the beginning and 122.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 06:46:16,233 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.60ms. Allocated memory is still 176.2MB. Free memory was 120.8MB in the beginning and 108.9MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.87ms. Allocated memory is still 176.2MB. Free memory was 108.9MB in the beginning and 106.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.68ms. Allocated memory is still 176.2MB. Free memory was 106.8MB in the beginning and 105.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.86ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 91.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17107.00ms. Allocated memory was 176.2MB in the beginning and 276.8MB in the end (delta: 100.7MB). Free memory was 91.4MB in the beginning and 126.6MB in the end (delta: -35.1MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. * Witness Printer took 97.02ms. Allocated memory is still 276.8MB. Free memory was 126.6MB in the beginning and 122.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: array index is always in bounds For all program executions holds that array index is always in bounds 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: 23]: 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, 31 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 17.1s, OverallIterations: 23, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 891 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 891 mSDsluCounter, 1127 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 733 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2029 IncrementalHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 394 mSDtfsCounter, 2029 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1159 GetRequests, 902 SyntacticMatches, 15 SemanticMatches, 242 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=15, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 177 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 1226 NumberOfCodeBlocks, 885 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1636 ConstructedInterpolants, 28 QuantifiedInterpolants, 18441 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1771 ConjunctsInSsa, 204 ConjunctsInUnsatCore, 50 InterpolantComputations, 11 PerfectInterpolantSequences, 1516/2967 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 06:46:16,252 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