./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrcspn-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f 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/array-memsafety/openbsd_cstrcspn-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86c4ccee9690ccdd33683565314ba095e56520aa142914bd8063fc7c4c92940d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 13:11:43,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 13:11:44,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 13:11:44,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 13:11:44,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 13:11:44,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 13:11:44,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 13:11:44,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 13:11:44,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 13:11:44,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 13:11:44,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 13:11:44,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 13:11:44,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 13:11:44,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 13:11:44,051 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 13:11:44,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 13:11:44,052 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 13:11:44,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 13:11:44,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 13:11:44,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 13:11:44,053 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 13:11:44,053 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 13:11:44,054 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 13:11:44,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 13:11:44,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 13:11:44,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 13:11:44,055 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 13:11:44,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 13:11:44,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 13:11:44,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 13:11:44,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 13:11:44,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 13:11:44,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 13:11:44,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:11:44,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 13:11:44,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 13:11:44,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 13:11:44,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 13:11:44,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 13:11:44,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 13:11:44,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 13:11:44,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 13:11:44,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86c4ccee9690ccdd33683565314ba095e56520aa142914bd8063fc7c4c92940d [2024-11-12 13:11:44,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 13:11:44,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 13:11:44,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 13:11:44,337 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 13:11:44,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 13:11:44,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrcspn-alloca-2.i [2024-11-12 13:11:45,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 13:11:46,049 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 13:11:46,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrcspn-alloca-2.i [2024-11-12 13:11:46,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7303b1755/c66e3709b74147c683955e0ba7de8a26/FLAGb261a7c51 [2024-11-12 13:11:46,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7303b1755/c66e3709b74147c683955e0ba7de8a26 [2024-11-12 13:11:46,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 13:11:46,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 13:11:46,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 13:11:46,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 13:11:46,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 13:11:46,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b634d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46, skipping insertion in model container [2024-11-12 13:11:46,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 13:11:46,764 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 13:11:46,765 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 13:11:46,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:11:46,778 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 13:11:46,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:11:46,897 INFO L204 MainTranslator]: Completed translation [2024-11-12 13:11:46,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46 WrapperNode [2024-11-12 13:11:46,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 13:11:46,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 13:11:46,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 13:11:46,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 13:11:46,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,944 INFO L138 Inliner]: procedures = 117, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-11-12 13:11:46,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 13:11:46,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 13:11:46,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 13:11:46,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 13:11:46,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,970 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [3, 3]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-12 13:11:46,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 13:11:46,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 13:11:46,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 13:11:46,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 13:11:46,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (1/1) ... [2024-11-12 13:11:46,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:11:47,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:47,013 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) [2024-11-12 13:11:47,015 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 [2024-11-12 13:11:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 13:11:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 13:11:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 13:11:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 13:11:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 13:11:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 13:11:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 13:11:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 13:11:47,153 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 13:11:47,155 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 13:11:47,340 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2024-11-12 13:11:47,340 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 13:11:47,357 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 13:11:47,357 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 13:11:47,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:11:47 BoogieIcfgContainer [2024-11-12 13:11:47,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 13:11:47,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 13:11:47,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 13:11:47,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 13:11:47,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:11:46" (1/3) ... [2024-11-12 13:11:47,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a8354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:11:47, skipping insertion in model container [2024-11-12 13:11:47,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:11:46" (2/3) ... [2024-11-12 13:11:47,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a8354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:11:47, skipping insertion in model container [2024-11-12 13:11:47,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:11:47" (3/3) ... [2024-11-12 13:11:47,368 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcspn-alloca-2.i [2024-11-12 13:11:47,386 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 13:11:47,386 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-12 13:11:47,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 13:11:47,432 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;@676a9f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 13:11:47,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-12 13:11:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 29 states have (on average 1.793103448275862) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-12 13:11:47,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:47,444 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:47,445 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:47,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-12 13:11:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621910240] [2024-11-12 13:11:47,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:47,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:47,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621910240] [2024-11-12 13:11:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621910240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:47,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:47,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:11:47,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809838894] [2024-11-12 13:11:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:47,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:11:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:11:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:47,813 INFO L87 Difference]: Start difference. First operand has 43 states, 29 states have (on average 1.793103448275862) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-12 13:11:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:47,868 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2024-11-12 13:11:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:11:47,871 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 [2024-11-12 13:11:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:47,878 INFO L225 Difference]: With dead ends: 56 [2024-11-12 13:11:47,878 INFO L226 Difference]: Without dead ends: 54 [2024-11-12 13:11:47,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:47,884 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:47,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 118 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-12 13:11:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2024-11-12 13:11:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-12 13:11:47,919 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 7 [2024-11-12 13:11:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:47,920 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-12 13:11:47,920 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) [2024-11-12 13:11:47,920 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-12 13:11:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-12 13:11:47,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:47,922 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:47,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 13:11:47,923 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:47,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:47,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2024-11-12 13:11:47,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:47,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522739134] [2024-11-12 13:11:47,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:47,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:48,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:48,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522739134] [2024-11-12 13:11:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522739134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:48,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:48,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:11:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145288662] [2024-11-12 13:11:48,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:48,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:11:48,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:48,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:11:48,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:48,378 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:48,470 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2024-11-12 13:11:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 13:11:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-12 13:11:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:48,472 INFO L225 Difference]: With dead ends: 62 [2024-11-12 13:11:48,472 INFO L226 Difference]: Without dead ends: 62 [2024-11-12 13:11:48,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:11:48,474 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 53 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:48,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 73 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-12 13:11:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2024-11-12 13:11:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-12 13:11:48,486 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 7 [2024-11-12 13:11:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:48,486 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-12 13:11:48,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-12 13:11:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-12 13:11:48,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:48,487 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:48,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 13:11:48,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:48,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2024-11-12 13:11:48,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913910736] [2024-11-12 13:11:48,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:48,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:48,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913910736] [2024-11-12 13:11:48,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913910736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:48,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:48,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:11:48,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900732232] [2024-11-12 13:11:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:48,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 13:11:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:48,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 13:11:48,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:11:48,659 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:48,726 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-12 13:11:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 13:11:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-12 13:11:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:48,727 INFO L225 Difference]: With dead ends: 46 [2024-11-12 13:11:48,728 INFO L226 Difference]: Without dead ends: 46 [2024-11-12 13:11:48,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-12 13:11:48,731 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 26 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:48,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 88 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-12 13:11:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-11-12 13:11:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 43 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) [2024-11-12 13:11:48,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-12 13:11:48,740 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 7 [2024-11-12 13:11:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:48,740 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-12 13:11:48,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-12 13:11:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-12 13:11:48,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:48,741 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:48,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 13:11:48,742 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:48,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:48,744 INFO L85 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2024-11-12 13:11:48,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:48,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338407392] [2024-11-12 13:11:48,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:48,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338407392] [2024-11-12 13:11:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338407392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:48,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:48,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:11:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583125430] [2024-11-12 13:11:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:48,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:11:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:11:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:48,799 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:48,825 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-11-12 13:11:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:11:48,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-12 13:11:48,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:48,826 INFO L225 Difference]: With dead ends: 61 [2024-11-12 13:11:48,826 INFO L226 Difference]: Without dead ends: 61 [2024-11-12 13:11:48,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:48,828 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:48,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 85 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-12 13:11:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2024-11-12 13:11:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 54 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) [2024-11-12 13:11:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2024-11-12 13:11:48,837 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 9 [2024-11-12 13:11:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:48,837 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2024-11-12 13:11:48,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2024-11-12 13:11:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-12 13:11:48,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:48,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:48,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 13:11:48,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:48,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2024-11-12 13:11:48,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:48,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151269861] [2024-11-12 13:11:48,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:48,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:48,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151269861] [2024-11-12 13:11:48,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151269861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:48,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:11:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244953503] [2024-11-12 13:11:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:48,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:11:48,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:11:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:11:48,904 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:48,935 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-12 13:11:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:11:48,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-12 13:11:48,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:48,936 INFO L225 Difference]: With dead ends: 53 [2024-11-12 13:11:48,937 INFO L226 Difference]: Without dead ends: 53 [2024-11-12 13:11:48,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:11:48,938 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:48,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-12 13:11:48,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-12 13:11:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 52 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2024-11-12 13:11:48,947 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 9 [2024-11-12 13:11:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:48,947 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2024-11-12 13:11:48,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2024-11-12 13:11:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-12 13:11:48,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:48,948 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:48,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 13:11:48,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:48,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2024-11-12 13:11:48,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:48,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55244736] [2024-11-12 13:11:48,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:48,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:49,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55244736] [2024-11-12 13:11:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55244736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:49,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:49,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 13:11:49,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413723394] [2024-11-12 13:11:49,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:49,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 13:11:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 13:11:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 13:11:49,103 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:49,182 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-12 13:11:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:11:49,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-12 13:11:49,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:49,185 INFO L225 Difference]: With dead ends: 57 [2024-11-12 13:11:49,186 INFO L226 Difference]: Without dead ends: 57 [2024-11-12 13:11:49,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-12 13:11:49,187 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:49,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 75 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:49,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-12 13:11:49,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-12 13:11:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.434782608695652) internal successors, (66), 54 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) [2024-11-12 13:11:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-12 13:11:49,194 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 9 [2024-11-12 13:11:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:49,194 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-12 13:11:49,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-12 13:11:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-12 13:11:49,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:49,195 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:49,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 13:11:49,197 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:49,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash 629683416, now seen corresponding path program 1 times [2024-11-12 13:11:49,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:49,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491132872] [2024-11-12 13:11:49,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:49,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:49,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491132872] [2024-11-12 13:11:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491132872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:49,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:49,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:11:49,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669144278] [2024-11-12 13:11:49,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:49,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:11:49,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:11:49,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:49,356 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-12 13:11:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:49,405 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-12 13:11:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:11:49,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2024-11-12 13:11:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:49,407 INFO L225 Difference]: With dead ends: 67 [2024-11-12 13:11:49,407 INFO L226 Difference]: Without dead ends: 67 [2024-11-12 13:11:49,407 INFO L434 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 [2024-11-12 13:11:49,408 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:49,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 94 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-12 13:11:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-12 13:11:49,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 65 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) [2024-11-12 13:11:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-11-12 13:11:49,418 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 10 [2024-11-12 13:11:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:49,418 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-11-12 13:11:49,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-12 13:11:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-11-12 13:11:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-12 13:11:49,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:49,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:49,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 13:11:49,420 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:49,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -179663210, now seen corresponding path program 1 times [2024-11-12 13:11:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:49,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119427279] [2024-11-12 13:11:49,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:49,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:49,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119427279] [2024-11-12 13:11:49,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119427279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:49,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:49,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:11:49,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266049830] [2024-11-12 13:11:49,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:49,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 13:11:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:49,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 13:11:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:11:49,596 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 5 states, 4 states have (on average 2.5) 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) [2024-11-12 13:11:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:49,650 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2024-11-12 13:11:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 13:11:49,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) 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 [2024-11-12 13:11:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:49,651 INFO L225 Difference]: With dead ends: 82 [2024-11-12 13:11:49,651 INFO L226 Difference]: Without dead ends: 82 [2024-11-12 13:11:49,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:11:49,652 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:49,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 96 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:49,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-12 13:11:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2024-11-12 13:11:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 65 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) [2024-11-12 13:11:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-11-12 13:11:49,658 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 10 [2024-11-12 13:11:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:49,658 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-11-12 13:11:49,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) 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) [2024-11-12 13:11:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-11-12 13:11:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 13:11:49,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:49,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:49,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 13:11:49,659 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:49,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1954650589, now seen corresponding path program 1 times [2024-11-12 13:11:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:49,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770695478] [2024-11-12 13:11:49,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:49,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770695478] [2024-11-12 13:11:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770695478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:49,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:49,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:11:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297868093] [2024-11-12 13:11:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:49,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:11:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:11:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:49,744 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:49,780 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2024-11-12 13:11:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:11:49,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-12 13:11:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:49,781 INFO L225 Difference]: With dead ends: 73 [2024-11-12 13:11:49,781 INFO L226 Difference]: Without dead ends: 73 [2024-11-12 13:11:49,781 INFO L434 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 [2024-11-12 13:11:49,782 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:49,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-12 13:11:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-12 13:11:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 70 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2024-11-12 13:11:49,787 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 11 [2024-11-12 13:11:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:49,787 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2024-11-12 13:11:49,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2024-11-12 13:11:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 13:11:49,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:49,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:49,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 13:11:49,788 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:49,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1530970081, now seen corresponding path program 1 times [2024-11-12 13:11:49,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:49,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001109471] [2024-11-12 13:11:49,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:49,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001109471] [2024-11-12 13:11:49,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001109471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:49,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:49,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:11:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463510067] [2024-11-12 13:11:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:49,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 13:11:49,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 13:11:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:11:49,881 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:49,903 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2024-11-12 13:11:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 13:11:49,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-12 13:11:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:49,904 INFO L225 Difference]: With dead ends: 70 [2024-11-12 13:11:49,904 INFO L226 Difference]: Without dead ends: 70 [2024-11-12 13:11:49,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:11:49,905 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:49,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 49 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-12 13:11:49,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-12 13:11:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 64 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-11-12 13:11:49,910 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 11 [2024-11-12 13:11:49,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:49,910 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-11-12 13:11:49,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-11-12 13:11:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 13:11:49,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:49,911 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:49,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 13:11:49,911 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:49,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2024-11-12 13:11:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:49,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686248685] [2024-11-12 13:11:49,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686248685] [2024-11-12 13:11:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686248685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:11:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377884364] [2024-11-12 13:11:50,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:50,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:50,125 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) [2024-11-12 13:11:50,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 13:11:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:50,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 13:11:50,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:11:50,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:11:50,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-12 13:11:50,334 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 [2024-11-12 13:11:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:50,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:11:50,722 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 13:11:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377884364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:11:50,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:11:50,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-12 13:11:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20992835] [2024-11-12 13:11:50,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:11:50,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 13:11:50,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 13:11:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-12 13:11:50,771 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:50,938 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2024-11-12 13:11:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 13:11:50,939 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-12 13:11:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:50,940 INFO L225 Difference]: With dead ends: 70 [2024-11-12 13:11:50,940 INFO L226 Difference]: Without dead ends: 70 [2024-11-12 13:11:50,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-12 13:11:50,941 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:50,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 133 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-12 13:11:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2024-11-12 13:11:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-11-12 13:11:50,949 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 11 [2024-11-12 13:11:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:50,949 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-11-12 13:11:50,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-11-12 13:11:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 13:11:50,950 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:50,950 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:50,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 13:11:51,154 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,SelfDestructingSolverStorable10 [2024-11-12 13:11:51,155 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:51,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:51,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2024-11-12 13:11:51,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:51,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568808102] [2024-11-12 13:11:51,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:51,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:51,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568808102] [2024-11-12 13:11:51,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568808102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:11:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659354591] [2024-11-12 13:11:51,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:51,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:51,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:51,364 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) [2024-11-12 13:11:51,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 13:11:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:51,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 13:11:51,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:11:51,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-12 13:11:51,449 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 8 treesize of output 1 [2024-11-12 13:11:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:51,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:11:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:51,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659354591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:11:51,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:11:51,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-12 13:11:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054384993] [2024-11-12 13:11:51,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:11:51,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 13:11:51,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:51,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 13:11:51,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-12 13:11:51,786 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:51,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:51,970 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-11-12 13:11:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:11:51,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-12 13:11:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:51,972 INFO L225 Difference]: With dead ends: 67 [2024-11-12 13:11:51,973 INFO L226 Difference]: Without dead ends: 67 [2024-11-12 13:11:51,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-12 13:11:51,973 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:51,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:51,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-12 13:11:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2024-11-12 13:11:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-12 13:11:51,978 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 13 [2024-11-12 13:11:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:51,978 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-12 13:11:51,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-12 13:11:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-12 13:11:51,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:51,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:51,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 13:11:52,183 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,SelfDestructingSolverStorable11 [2024-11-12 13:11:52,184 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:52,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 170900411, now seen corresponding path program 1 times [2024-11-12 13:11:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:52,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113509657] [2024-11-12 13:11:52,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:52,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113509657] [2024-11-12 13:11:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113509657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:52,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:52,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:11:52,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50086669] [2024-11-12 13:11:52,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:52,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 13:11:52,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:52,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 13:11:52,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:11:52,260 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:52,300 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2024-11-12 13:11:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 13:11:52,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-12 13:11:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:52,301 INFO L225 Difference]: With dead ends: 56 [2024-11-12 13:11:52,301 INFO L226 Difference]: Without dead ends: 56 [2024-11-12 13:11:52,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 13:11:52,302 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:52,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 73 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-12 13:11:52,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-12 13:11:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 55 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) [2024-11-12 13:11:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-12 13:11:52,304 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 14 [2024-11-12 13:11:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:52,305 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-12 13:11:52,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-12 13:11:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-12 13:11:52,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:52,305 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:52,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 13:11:52,306 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:52,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash 170900412, now seen corresponding path program 1 times [2024-11-12 13:11:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149849177] [2024-11-12 13:11:52,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:52,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:52,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149849177] [2024-11-12 13:11:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149849177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:52,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:52,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 13:11:52,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550069562] [2024-11-12 13:11:52,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:52,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 13:11:52,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:52,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 13:11:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 13:11:52,431 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:52,507 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-11-12 13:11:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 13:11:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-12 13:11:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:52,508 INFO L225 Difference]: With dead ends: 60 [2024-11-12 13:11:52,508 INFO L226 Difference]: Without dead ends: 60 [2024-11-12 13:11:52,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 13:11:52,509 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:52,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 141 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-12 13:11:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2024-11-12 13:11:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-12 13:11:52,511 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2024-11-12 13:11:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:52,511 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-12 13:11:52,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-12 13:11:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-12 13:11:52,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:52,512 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:52,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 13:11:52,512 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:52,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash -115553677, now seen corresponding path program 1 times [2024-11-12 13:11:52,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:52,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590825480] [2024-11-12 13:11:52,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:52,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:52,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590825480] [2024-11-12 13:11:52,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590825480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:52,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:52,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 13:11:52,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671362278] [2024-11-12 13:11:52,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:52,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 13:11:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:52,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 13:11:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 13:11:52,714 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:52,752 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-12 13:11:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:11:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-12 13:11:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:52,753 INFO L225 Difference]: With dead ends: 57 [2024-11-12 13:11:52,754 INFO L226 Difference]: Without dead ends: 57 [2024-11-12 13:11:52,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 13:11:52,754 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:52,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:52,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-12 13:11:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2024-11-12 13:11:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-12 13:11:52,758 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 14 [2024-11-12 13:11:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:52,758 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-12 13:11:52,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-12 13:11:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-12 13:11:52,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:52,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:52,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 13:11:52,759 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:52,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1757934218, now seen corresponding path program 1 times [2024-11-12 13:11:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877254342] [2024-11-12 13:11:52,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:52,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:52,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:52,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877254342] [2024-11-12 13:11:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877254342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:52,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:52,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 13:11:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936299579] [2024-11-12 13:11:52,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:52,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 13:11:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 13:11:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 13:11:52,827 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:52,884 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-12 13:11:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:11:52,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-12 13:11:52,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:52,885 INFO L225 Difference]: With dead ends: 46 [2024-11-12 13:11:52,885 INFO L226 Difference]: Without dead ends: 46 [2024-11-12 13:11:52,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 13:11:52,886 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:52,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-12 13:11:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-12 13:11:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-12 13:11:52,890 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2024-11-12 13:11:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:52,890 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-12 13:11:52,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-12 13:11:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-12 13:11:52,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:52,891 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:52,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 13:11:52,891 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:52,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1757934219, now seen corresponding path program 1 times [2024-11-12 13:11:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:52,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008008981] [2024-11-12 13:11:52,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:52,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:53,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:53,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008008981] [2024-11-12 13:11:53,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008008981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:53,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:53,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 13:11:53,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216288734] [2024-11-12 13:11:53,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:53,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 13:11:53,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 13:11:53,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 13:11:53,099 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:53,199 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-11-12 13:11:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 13:11:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-12 13:11:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:53,200 INFO L225 Difference]: With dead ends: 52 [2024-11-12 13:11:53,200 INFO L226 Difference]: Without dead ends: 52 [2024-11-12 13:11:53,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:11:53,201 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:53,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 124 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-12 13:11:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-12 13:11:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-12 13:11:53,202 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 17 [2024-11-12 13:11:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:53,203 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-12 13:11:53,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-12 13:11:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-12 13:11:53,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:53,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:53,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 13:11:53,204 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:53,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash 120346126, now seen corresponding path program 1 times [2024-11-12 13:11:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279014912] [2024-11-12 13:11:53,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:53,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:53,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:53,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279014912] [2024-11-12 13:11:53,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279014912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:53,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:53,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:11:53,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081595840] [2024-11-12 13:11:53,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:53,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:11:53,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:53,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:11:53,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:53,346 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2024-11-12 13:11:53,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:53,366 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-12 13:11:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:11:53,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 [2024-11-12 13:11:53,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:53,366 INFO L225 Difference]: With dead ends: 46 [2024-11-12 13:11:53,367 INFO L226 Difference]: Without dead ends: 44 [2024-11-12 13:11:53,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:11:53,367 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:53,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:53,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-12 13:11:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-12 13:11:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 43 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) [2024-11-12 13:11:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-12 13:11:53,370 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 21 [2024-11-12 13:11:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:53,370 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-12 13:11:53,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2024-11-12 13:11:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-12 13:11:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-12 13:11:53,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:53,371 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:53,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 13:11:53,371 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:53,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash -564187384, now seen corresponding path program 1 times [2024-11-12 13:11:53,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913823125] [2024-11-12 13:11:53,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:53,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913823125] [2024-11-12 13:11:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913823125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:53,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:53,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 13:11:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204148342] [2024-11-12 13:11:53,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:53,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 13:11:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 13:11:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:11:53,572 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:53,628 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2024-11-12 13:11:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:11:53,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-11-12 13:11:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:53,629 INFO L225 Difference]: With dead ends: 66 [2024-11-12 13:11:53,629 INFO L226 Difference]: Without dead ends: 66 [2024-11-12 13:11:53,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:11:53,630 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:53,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 184 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:11:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-12 13:11:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-12 13:11:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 64 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) [2024-11-12 13:11:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-11-12 13:11:53,632 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 22 [2024-11-12 13:11:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:53,632 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-11-12 13:11:53,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-11-12 13:11:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-12 13:11:53,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:53,633 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:53,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 13:11:53,633 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:53,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash -564185206, now seen corresponding path program 1 times [2024-11-12 13:11:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:53,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334030358] [2024-11-12 13:11:53,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:53,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:53,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:53,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334030358] [2024-11-12 13:11:53,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334030358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:53,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:53,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 13:11:53,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394894312] [2024-11-12 13:11:53,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:53,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 13:11:53,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:53,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 13:11:53,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:11:53,811 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:53,901 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2024-11-12 13:11:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:11:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-11-12 13:11:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:53,902 INFO L225 Difference]: With dead ends: 92 [2024-11-12 13:11:53,902 INFO L226 Difference]: Without dead ends: 76 [2024-11-12 13:11:53,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-12 13:11:53,902 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:53,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 195 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-12 13:11:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-12 13:11:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2024-11-12 13:11:53,904 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 22 [2024-11-12 13:11:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:53,904 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2024-11-12 13:11:53,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2024-11-12 13:11:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-12 13:11:53,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:53,906 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:53,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 13:11:53,907 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:53,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2041838348, now seen corresponding path program 1 times [2024-11-12 13:11:53,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:53,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43734067] [2024-11-12 13:11:53,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:53,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43734067] [2024-11-12 13:11:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43734067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-12 13:11:54,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299160390] [2024-11-12 13:11:54,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:54,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 13:11:54,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 13:11:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-12 13:11:54,126 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:54,246 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2024-11-12 13:11:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 13:11:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-11-12 13:11:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:54,247 INFO L225 Difference]: With dead ends: 110 [2024-11-12 13:11:54,247 INFO L226 Difference]: Without dead ends: 98 [2024-11-12 13:11:54,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-12 13:11:54,248 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:54,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 181 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-12 13:11:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 77. [2024-11-12 13:11:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.16) internal successors, (87), 76 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2024-11-12 13:11:54,250 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 22 [2024-11-12 13:11:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:54,250 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2024-11-12 13:11:54,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2024-11-12 13:11:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-12 13:11:54,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:54,252 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:54,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 13:11:54,253 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:54,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:54,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1381835834, now seen corresponding path program 1 times [2024-11-12 13:11:54,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:54,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304347875] [2024-11-12 13:11:54,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:54,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:54,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:54,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304347875] [2024-11-12 13:11:54,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304347875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:11:54,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:11:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 13:11:54,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543123597] [2024-11-12 13:11:54,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:11:54,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 13:11:54,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:54,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 13:11:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:11:54,428 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:54,503 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2024-11-12 13:11:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 13:11:54,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-11-12 13:11:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:54,504 INFO L225 Difference]: With dead ends: 120 [2024-11-12 13:11:54,504 INFO L226 Difference]: Without dead ends: 106 [2024-11-12 13:11:54,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-12 13:11:54,505 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:54,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 171 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-12 13:11:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 79. [2024-11-12 13:11:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 78 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2024-11-12 13:11:54,508 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 22 [2024-11-12 13:11:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:54,508 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2024-11-12 13:11:54,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2024-11-12 13:11:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 13:11:54,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:54,509 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:54,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 13:11:54,509 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:54,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1754314281, now seen corresponding path program 1 times [2024-11-12 13:11:54,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:54,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826275489] [2024-11-12 13:11:54,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:54,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:54,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826275489] [2024-11-12 13:11:54,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826275489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:11:54,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240861225] [2024-11-12 13:11:54,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:54,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:54,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:54,767 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) [2024-11-12 13:11:54,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 13:11:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:54,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 13:11:54,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:11:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:54,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:11:55,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-12 13:11:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240861225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:11:55,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:11:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2024-11-12 13:11:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629252438] [2024-11-12 13:11:55,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:11:55,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 13:11:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 13:11:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-12 13:11:55,185 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:55,419 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2024-11-12 13:11:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 13:11:55,419 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-12 13:11:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:55,420 INFO L225 Difference]: With dead ends: 100 [2024-11-12 13:11:55,420 INFO L226 Difference]: Without dead ends: 100 [2024-11-12 13:11:55,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-12 13:11:55,421 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:55,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 245 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:11:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-12 13:11:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2024-11-12 13:11:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.160919540229885) internal successors, (101), 88 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2024-11-12 13:11:55,423 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 26 [2024-11-12 13:11:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:55,423 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-12 13:11:55,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2024-11-12 13:11:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 13:11:55,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:55,424 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:55,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 13:11:55,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:55,625 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:55,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:55,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1609485277, now seen corresponding path program 1 times [2024-11-12 13:11:55,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:55,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567253309] [2024-11-12 13:11:55,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:55,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:55,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:55,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567253309] [2024-11-12 13:11:55,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567253309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:11:55,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380509963] [2024-11-12 13:11:55,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:55,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:55,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:55,833 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) [2024-11-12 13:11:55,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 13:11:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:55,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 13:11:55,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:11:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:56,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:11:56,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-12 13:11:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380509963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:11:56,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:11:56,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-12 13:11:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918621379] [2024-11-12 13:11:56,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:11:56,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 13:11:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 13:11:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-12 13:11:56,205 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:56,415 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2024-11-12 13:11:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 13:11:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-12 13:11:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:56,416 INFO L225 Difference]: With dead ends: 119 [2024-11-12 13:11:56,416 INFO L226 Difference]: Without dead ends: 119 [2024-11-12 13:11:56,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-12 13:11:56,417 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 13 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:56,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 447 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:11:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-12 13:11:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2024-11-12 13:11:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-12 13:11:56,419 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 26 [2024-11-12 13:11:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:56,419 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-12 13:11:56,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-12 13:11:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-12 13:11:56,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:56,420 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:56,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 13:11:56,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:56,625 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:56,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:56,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1245054636, now seen corresponding path program 2 times [2024-11-12 13:11:56,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:56,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679568029] [2024-11-12 13:11:56,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679568029] [2024-11-12 13:11:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679568029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:11:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484564987] [2024-11-12 13:11:56,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:11:56,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:56,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:56,978 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) [2024-11-12 13:11:56,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 13:11:57,056 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:11:57,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:11:57,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-12 13:11:57,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:11:57,133 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 13 treesize of output 9 [2024-11-12 13:11:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:57,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:11:57,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-12 13:11:57,263 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 16 treesize of output 12 [2024-11-12 13:11:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:57,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484564987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:11:57,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:11:57,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 26 [2024-11-12 13:11:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895423988] [2024-11-12 13:11:57,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:11:57,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 13:11:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 13:11:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2024-11-12 13:11:57,331 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:57,602 INFO L93 Difference]: Finished difference Result 182 states and 200 transitions. [2024-11-12 13:11:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 13:11:57,602 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-12 13:11:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:57,603 INFO L225 Difference]: With dead ends: 182 [2024-11-12 13:11:57,603 INFO L226 Difference]: Without dead ends: 165 [2024-11-12 13:11:57,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 13:11:57,604 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:57,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 371 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:11:57,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-12 13:11:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 152. [2024-11-12 13:11:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 1.14) internal successors, (171), 151 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2024-11-12 13:11:57,608 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 31 [2024-11-12 13:11:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:57,608 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2024-11-12 13:11:57,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2024-11-12 13:11:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-12 13:11:57,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:57,609 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:57,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 13:11:57,809 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,SelfDestructingSolverStorable24 [2024-11-12 13:11:57,809 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:57,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:57,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1093578641, now seen corresponding path program 2 times [2024-11-12 13:11:57,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:57,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934655504] [2024-11-12 13:11:57,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:58,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934655504] [2024-11-12 13:11:58,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934655504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:11:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194026183] [2024-11-12 13:11:58,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:11:58,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:58,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:58,324 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) [2024-11-12 13:11:58,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 13:11:58,412 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:11:58,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:11:58,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-12 13:11:58,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:11:58,507 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 13 treesize of output 9 [2024-11-12 13:11:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:58,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:11:58,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-12 13:11:58,688 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 16 treesize of output 12 [2024-11-12 13:11:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194026183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:11:58,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:11:58,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 33 [2024-11-12 13:11:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421582645] [2024-11-12 13:11:58,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:11:58,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-12 13:11:58,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:58,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-12 13:11:58,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2024-11-12 13:11:58,790 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:11:59,253 INFO L93 Difference]: Finished difference Result 277 states and 300 transitions. [2024-11-12 13:11:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 13:11:59,254 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 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 34 [2024-11-12 13:11:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:11:59,255 INFO L225 Difference]: With dead ends: 277 [2024-11-12 13:11:59,255 INFO L226 Difference]: Without dead ends: 212 [2024-11-12 13:11:59,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2024-11-12 13:11:59,256 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:11:59,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 579 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:11:59,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-12 13:11:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 189. [2024-11-12 13:11:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 187 states have (on average 1.1336898395721926) internal successors, (212), 188 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 212 transitions. [2024-11-12 13:11:59,261 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 212 transitions. Word has length 34 [2024-11-12 13:11:59,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:11:59,262 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 212 transitions. [2024-11-12 13:11:59,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 212 transitions. [2024-11-12 13:11:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-12 13:11:59,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:11:59,263 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:11:59,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 13:11:59,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-12 13:11:59,464 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:11:59,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:11:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1530037201, now seen corresponding path program 3 times [2024-11-12 13:11:59,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:11:59,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86348187] [2024-11-12 13:11:59,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:11:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:11:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:11:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:11:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:11:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86348187] [2024-11-12 13:11:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86348187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:11:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856846425] [2024-11-12 13:11:59,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:11:59,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:11:59,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:11:59,810 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) [2024-11-12 13:11:59,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 13:11:59,914 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-12 13:11:59,915 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:11:59,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-12 13:11:59,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:11:59,925 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 [2024-11-12 13:12:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:00,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:00,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856846425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:00,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:00,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2024-11-12 13:12:00,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439662274] [2024-11-12 13:12:00,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:00,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-12 13:12:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-12 13:12:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2024-11-12 13:12:00,456 INFO L87 Difference]: Start difference. First operand 189 states and 212 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:00,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:00,794 INFO L93 Difference]: Finished difference Result 225 states and 250 transitions. [2024-11-12 13:12:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 13:12:00,794 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 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 35 [2024-11-12 13:12:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:00,795 INFO L225 Difference]: With dead ends: 225 [2024-11-12 13:12:00,795 INFO L226 Difference]: Without dead ends: 225 [2024-11-12 13:12:00,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2024-11-12 13:12:00,796 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 108 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:00,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 361 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:12:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-12 13:12:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 209. [2024-11-12 13:12:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 1.1352657004830917) internal successors, (235), 208 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2024-11-12 13:12:00,800 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 35 [2024-11-12 13:12:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:00,800 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2024-11-12 13:12:00,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2024-11-12 13:12:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-12 13:12:00,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:00,801 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:00,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 13:12:01,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:01,006 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:01,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:01,006 INFO L85 PathProgramCache]: Analyzing trace with hash 739575116, now seen corresponding path program 3 times [2024-11-12 13:12:01,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:01,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533834332] [2024-11-12 13:12:01,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:01,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533834332] [2024-11-12 13:12:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533834332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915930844] [2024-11-12 13:12:01,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:12:01,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:01,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:01,300 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) [2024-11-12 13:12:01,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 13:12:01,391 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-12 13:12:01,391 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:01,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-12 13:12:01,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:01,405 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 [2024-11-12 13:12:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:01,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:01,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915930844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:01,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:01,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2024-11-12 13:12:01,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076374226] [2024-11-12 13:12:01,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:01,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 13:12:01,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 13:12:01,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-12 13:12:01,899 INFO L87 Difference]: Start difference. First operand 209 states and 235 transitions. Second operand has 24 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:02,145 INFO L93 Difference]: Finished difference Result 252 states and 281 transitions. [2024-11-12 13:12:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 13:12:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 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 38 [2024-11-12 13:12:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:02,150 INFO L225 Difference]: With dead ends: 252 [2024-11-12 13:12:02,150 INFO L226 Difference]: Without dead ends: 252 [2024-11-12 13:12:02,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-11-12 13:12:02,151 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 19 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:02,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 488 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:12:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-12 13:12:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2024-11-12 13:12:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 248 states have (on average 1.1330645161290323) internal successors, (281), 249 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 281 transitions. [2024-11-12 13:12:02,161 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 281 transitions. Word has length 38 [2024-11-12 13:12:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:02,163 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 281 transitions. [2024-11-12 13:12:02,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 281 transitions. [2024-11-12 13:12:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-12 13:12:02,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:02,164 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:02,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 13:12:02,368 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,SelfDestructingSolverStorable27 [2024-11-12 13:12:02,369 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:02,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1027740774, now seen corresponding path program 4 times [2024-11-12 13:12:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559959077] [2024-11-12 13:12:02,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559959077] [2024-11-12 13:12:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559959077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309596265] [2024-11-12 13:12:02,730 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 13:12:02,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:02,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:02,732 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) [2024-11-12 13:12:02,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 13:12:02,823 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 13:12:02,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:02,825 WARN L254 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-12 13:12:02,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:03,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 13:12:03,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-12 13:12:04,000 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-12 13:12:04,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 26 [2024-11-12 13:12:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:04,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:04,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2024-11-12 13:12:04,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:12:04,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 46 [2024-11-12 13:12:04,737 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 13 treesize of output 11 [2024-11-12 13:12:04,740 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 14 treesize of output 12 [2024-11-12 13:12:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:05,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309596265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:05,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:05,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 56 [2024-11-12 13:12:05,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043601836] [2024-11-12 13:12:05,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:05,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-12 13:12:05,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-12 13:12:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2863, Unknown=0, NotChecked=0, Total=3080 [2024-11-12 13:12:05,153 INFO L87 Difference]: Start difference. First operand 250 states and 281 transitions. Second operand has 56 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:07,442 INFO L93 Difference]: Finished difference Result 440 states and 481 transitions. [2024-11-12 13:12:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-12 13:12:07,443 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-12 13:12:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:07,444 INFO L225 Difference]: With dead ends: 440 [2024-11-12 13:12:07,444 INFO L226 Difference]: Without dead ends: 372 [2024-11-12 13:12:07,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=730, Invalid=8582, Unknown=0, NotChecked=0, Total=9312 [2024-11-12 13:12:07,447 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 193 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:07,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 772 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 13:12:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-12 13:12:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 322. [2024-11-12 13:12:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 320 states have (on average 1.128125) internal successors, (361), 321 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 361 transitions. [2024-11-12 13:12:07,452 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 361 transitions. Word has length 40 [2024-11-12 13:12:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:07,453 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 361 transitions. [2024-11-12 13:12:07,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 361 transitions. [2024-11-12 13:12:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-12 13:12:07,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:07,453 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:07,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 13:12:07,654 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,SelfDestructingSolverStorable28 [2024-11-12 13:12:07,654 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:07,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1859330627, now seen corresponding path program 5 times [2024-11-12 13:12:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141032618] [2024-11-12 13:12:07,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:08,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:08,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141032618] [2024-11-12 13:12:08,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141032618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:08,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862015151] [2024-11-12 13:12:08,021 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 13:12:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:08,023 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) [2024-11-12 13:12:08,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 13:12:08,118 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-12 13:12:08,118 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:08,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-12 13:12:08,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:08,128 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 [2024-11-12 13:12:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:08,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:08,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862015151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:08,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 34 [2024-11-12 13:12:08,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839826620] [2024-11-12 13:12:08,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:08,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 13:12:08,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 13:12:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 13:12:08,803 INFO L87 Difference]: Start difference. First operand 322 states and 361 transitions. Second operand has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:09,240 INFO L93 Difference]: Finished difference Result 381 states and 423 transitions. [2024-11-12 13:12:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 13:12:09,241 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 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 44 [2024-11-12 13:12:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:09,242 INFO L225 Difference]: With dead ends: 381 [2024-11-12 13:12:09,242 INFO L226 Difference]: Without dead ends: 381 [2024-11-12 13:12:09,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=251, Invalid=1641, Unknown=0, NotChecked=0, Total=1892 [2024-11-12 13:12:09,243 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 72 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:09,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 498 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:12:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-12 13:12:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 347. [2024-11-12 13:12:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 345 states have (on average 1.1304347826086956) internal successors, (390), 346 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 390 transitions. [2024-11-12 13:12:09,252 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 390 transitions. Word has length 44 [2024-11-12 13:12:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:09,253 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 390 transitions. [2024-11-12 13:12:09,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 390 transitions. [2024-11-12 13:12:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-12 13:12:09,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:09,254 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:09,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 13:12:09,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:09,459 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:09,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash 896133272, now seen corresponding path program 4 times [2024-11-12 13:12:09,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:09,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544946443] [2024-11-12 13:12:09,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:09,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544946443] [2024-11-12 13:12:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544946443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889597646] [2024-11-12 13:12:09,830 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 13:12:09,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:09,832 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) [2024-11-12 13:12:09,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 13:12:09,932 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 13:12:09,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:09,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-12 13:12:09,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:09,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-12 13:12:11,159 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-11-12 13:12:11,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 39 [2024-11-12 13:12:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 13:12:11,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:12,574 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 44 treesize of output 38 [2024-11-12 13:12:12,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2024-11-12 13:12:12,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-12 13:12:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 13:12:12,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889597646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:12,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:12,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 53 [2024-11-12 13:12:12,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504656959] [2024-11-12 13:12:12,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:12,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-12 13:12:12,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:12,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-12 13:12:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2520, Unknown=0, NotChecked=0, Total=2756 [2024-11-12 13:12:12,623 INFO L87 Difference]: Start difference. First operand 347 states and 390 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 53 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:14,805 INFO L93 Difference]: Finished difference Result 614 states and 670 transitions. [2024-11-12 13:12:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-12 13:12:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 53 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-12 13:12:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:14,806 INFO L225 Difference]: With dead ends: 614 [2024-11-12 13:12:14,806 INFO L226 Difference]: Without dead ends: 329 [2024-11-12 13:12:14,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=649, Invalid=5831, Unknown=0, NotChecked=0, Total=6480 [2024-11-12 13:12:14,808 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 71 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:14,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 700 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 13:12:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-12 13:12:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 202. [2024-11-12 13:12:14,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 201 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2024-11-12 13:12:14,814 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 46 [2024-11-12 13:12:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:14,814 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2024-11-12 13:12:14,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 53 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2024-11-12 13:12:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-12 13:12:14,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:14,815 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:14,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 13:12:15,019 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,SelfDestructingSolverStorable30 [2024-11-12 13:12:15,020 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:15,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1425349330, now seen corresponding path program 6 times [2024-11-12 13:12:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:15,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203328376] [2024-11-12 13:12:15,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:15,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203328376] [2024-11-12 13:12:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203328376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167358962] [2024-11-12 13:12:15,453 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 13:12:15,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:15,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:15,455 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) [2024-11-12 13:12:15,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 13:12:15,587 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-12 13:12:15,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:15,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-12 13:12:15,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:15,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 13:12:15,809 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 13 treesize of output 9 [2024-11-12 13:12:15,907 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 13:12:15,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:12:15,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-12 13:12:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:15,988 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:16,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-12 13:12:16,162 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 16 treesize of output 12 [2024-11-12 13:12:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:16,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167358962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:16,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:16,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 19] total 43 [2024-11-12 13:12:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530678519] [2024-11-12 13:12:16,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:16,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-12 13:12:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-12 13:12:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2024-11-12 13:12:16,408 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 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) [2024-11-12 13:12:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:17,349 INFO L93 Difference]: Finished difference Result 403 states and 441 transitions. [2024-11-12 13:12:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-12 13:12:17,350 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 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 49 [2024-11-12 13:12:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:17,351 INFO L225 Difference]: With dead ends: 403 [2024-11-12 13:12:17,351 INFO L226 Difference]: Without dead ends: 253 [2024-11-12 13:12:17,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=387, Invalid=4443, Unknown=0, NotChecked=0, Total=4830 [2024-11-12 13:12:17,353 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 127 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:17,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 848 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 13:12:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-12 13:12:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 218. [2024-11-12 13:12:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.1152073732718895) internal successors, (242), 217 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 242 transitions. [2024-11-12 13:12:17,361 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 242 transitions. Word has length 49 [2024-11-12 13:12:17,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:17,361 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 242 transitions. [2024-11-12 13:12:17,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 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) [2024-11-12 13:12:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 242 transitions. [2024-11-12 13:12:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-12 13:12:17,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:17,362 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:17,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 13:12:17,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-12 13:12:17,567 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:17,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash -190229099, now seen corresponding path program 7 times [2024-11-12 13:12:17,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:17,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161148278] [2024-11-12 13:12:17,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:17,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161148278] [2024-11-12 13:12:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161148278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416112313] [2024-11-12 13:12:17,940 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 13:12:17,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:17,941 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) [2024-11-12 13:12:17,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 13:12:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:18,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-12 13:12:18,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:18,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:18,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-12 13:12:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416112313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:18,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-12 13:12:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119623665] [2024-11-12 13:12:18,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:18,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 13:12:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 13:12:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 13:12:18,623 INFO L87 Difference]: Start difference. First operand 218 states and 242 transitions. Second operand has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:19,068 INFO L93 Difference]: Finished difference Result 274 states and 301 transitions. [2024-11-12 13:12:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 13:12:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 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 53 [2024-11-12 13:12:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:19,070 INFO L225 Difference]: With dead ends: 274 [2024-11-12 13:12:19,070 INFO L226 Difference]: Without dead ends: 274 [2024-11-12 13:12:19,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=240, Invalid=1830, Unknown=0, NotChecked=0, Total=2070 [2024-11-12 13:12:19,071 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 83 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:19,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 635 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:12:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-12 13:12:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 238. [2024-11-12 13:12:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.1181434599156117) internal successors, (265), 237 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 265 transitions. [2024-11-12 13:12:19,076 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 265 transitions. Word has length 53 [2024-11-12 13:12:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:19,076 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 265 transitions. [2024-11-12 13:12:19,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 265 transitions. [2024-11-12 13:12:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-12 13:12:19,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:19,077 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:19,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 13:12:19,277 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,SelfDestructingSolverStorable32 [2024-11-12 13:12:19,278 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:19,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:19,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1745605952, now seen corresponding path program 8 times [2024-11-12 13:12:19,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:19,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028283394] [2024-11-12 13:12:19,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:19,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:19,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:19,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028283394] [2024-11-12 13:12:19,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028283394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:19,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442437038] [2024-11-12 13:12:19,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:12:19,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:19,723 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) [2024-11-12 13:12:19,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 13:12:19,827 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:12:19,827 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:19,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-12 13:12:19,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:20,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 13:12:20,093 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 13 treesize of output 9 [2024-11-12 13:12:20,212 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 13:12:20,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:12:20,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-12 13:12:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:20,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:20,880 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 19 treesize of output 17 [2024-11-12 13:12:20,883 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 28 treesize of output 24 [2024-11-12 13:12:20,969 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 13 treesize of output 11 [2024-11-12 13:12:20,972 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 20 [2024-11-12 13:12:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442437038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:21,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 24] total 64 [2024-11-12 13:12:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38249363] [2024-11-12 13:12:21,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:21,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-12 13:12:21,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-12 13:12:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=3832, Unknown=0, NotChecked=0, Total=4032 [2024-11-12 13:12:21,580 INFO L87 Difference]: Start difference. First operand 238 states and 265 transitions. Second operand has 64 states, 64 states have (on average 2.546875) internal successors, (163), 64 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:23,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:23,604 INFO L93 Difference]: Finished difference Result 496 states and 539 transitions. [2024-11-12 13:12:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-12 13:12:23,604 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.546875) internal successors, (163), 64 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-12 13:12:23,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:23,605 INFO L225 Difference]: With dead ends: 496 [2024-11-12 13:12:23,605 INFO L226 Difference]: Without dead ends: 293 [2024-11-12 13:12:23,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=519, Invalid=10401, Unknown=0, NotChecked=0, Total=10920 [2024-11-12 13:12:23,608 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 143 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:23,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1408 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 13:12:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-12 13:12:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 254. [2024-11-12 13:12:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.1106719367588933) internal successors, (281), 253 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 281 transitions. [2024-11-12 13:12:23,612 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 281 transitions. Word has length 58 [2024-11-12 13:12:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:23,612 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 281 transitions. [2024-11-12 13:12:23,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.546875) internal successors, (163), 64 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 281 transitions. [2024-11-12 13:12:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-12 13:12:23,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:23,613 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:23,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 13:12:23,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:23,814 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:23,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash 441604957, now seen corresponding path program 9 times [2024-11-12 13:12:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:23,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059183619] [2024-11-12 13:12:23,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:23,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059183619] [2024-11-12 13:12:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059183619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755544691] [2024-11-12 13:12:24,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:12:24,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:24,391 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) [2024-11-12 13:12:24,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 13:12:24,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-12 13:12:24,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:24,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-12 13:12:24,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:24,536 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 [2024-11-12 13:12:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:24,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:25,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755544691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:25,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:25,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-12 13:12:25,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459877396] [2024-11-12 13:12:25,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:25,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-12 13:12:25,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-12 13:12:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2264, Unknown=0, NotChecked=0, Total=2550 [2024-11-12 13:12:25,511 INFO L87 Difference]: Start difference. First operand 254 states and 281 transitions. Second operand has 51 states, 50 states have (on average 3.52) internal successors, (176), 51 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:26,142 INFO L93 Difference]: Finished difference Result 319 states and 349 transitions. [2024-11-12 13:12:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 13:12:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.52) internal successors, (176), 51 states have internal predecessors, (176), 0 states have call successors, (0), 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 62 [2024-11-12 13:12:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:26,143 INFO L225 Difference]: With dead ends: 319 [2024-11-12 13:12:26,143 INFO L226 Difference]: Without dead ends: 319 [2024-11-12 13:12:26,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=482, Invalid=3550, Unknown=0, NotChecked=0, Total=4032 [2024-11-12 13:12:26,144 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:26,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 763 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:12:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-12 13:12:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 274. [2024-11-12 13:12:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1135531135531136) internal successors, (304), 273 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 304 transitions. [2024-11-12 13:12:26,150 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 304 transitions. Word has length 62 [2024-11-12 13:12:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:26,150 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 304 transitions. [2024-11-12 13:12:26,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.52) internal successors, (176), 51 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 304 transitions. [2024-11-12 13:12:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-12 13:12:26,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:26,151 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:26,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 13:12:26,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:26,352 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:26,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1903133176, now seen corresponding path program 10 times [2024-11-12 13:12:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:26,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016422212] [2024-11-12 13:12:26,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:26,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:26,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016422212] [2024-11-12 13:12:26,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016422212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:26,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114543518] [2024-11-12 13:12:26,956 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 13:12:26,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:26,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:26,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:12:26,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 13:12:27,057 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 13:12:27,057 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:27,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-12 13:12:27,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:27,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 13:12:27,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-12 13:12:38,225 INFO L349 Elim1Store]: treesize reduction 25, result has 49.0 percent of original size [2024-11-12 13:12:38,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 50 [2024-11-12 13:12:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 22 proven. 77 refuted. 33 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:38,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:39,933 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 97 treesize of output 85 [2024-11-12 13:12:39,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:12:39,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 91 [2024-11-12 13:12:40,035 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 35 treesize of output 31 [2024-11-12 13:12:40,037 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 37 treesize of output 33 [2024-11-12 13:12:40,973 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-12 13:12:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 38 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:40,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114543518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:40,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:40,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 40, 40] total 92 [2024-11-12 13:12:40,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47700741] [2024-11-12 13:12:40,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:40,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-12 13:12:40,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:40,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-12 13:12:40,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=7840, Unknown=33, NotChecked=0, Total=8372 [2024-11-12 13:12:40,981 INFO L87 Difference]: Start difference. First operand 274 states and 304 transitions. Second operand has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 92 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:49,470 INFO L93 Difference]: Finished difference Result 570 states and 619 transitions. [2024-11-12 13:12:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-12 13:12:49,470 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 92 states have internal predecessors, (183), 0 states have call successors, (0), 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 67 [2024-11-12 13:12:49,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:49,472 INFO L225 Difference]: With dead ends: 570 [2024-11-12 13:12:49,472 INFO L226 Difference]: Without dead ends: 333 [2024-11-12 13:12:49,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5841 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=1598, Invalid=21622, Unknown=36, NotChecked=0, Total=23256 [2024-11-12 13:12:49,474 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 279 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 36 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:49,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1043 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2404 Invalid, 3 Unknown, 0 Unchecked, 2.3s Time] [2024-11-12 13:12:49,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-12 13:12:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 290. [2024-11-12 13:12:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.1072664359861593) internal successors, (320), 289 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 320 transitions. [2024-11-12 13:12:49,478 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 320 transitions. Word has length 67 [2024-11-12 13:12:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:49,478 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 320 transitions. [2024-11-12 13:12:49,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 92 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 320 transitions. [2024-11-12 13:12:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-12 13:12:49,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:49,479 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:49,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-12 13:12:49,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-12 13:12:49,680 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:49,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:49,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1326559739, now seen corresponding path program 11 times [2024-11-12 13:12:49,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:49,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820397276] [2024-11-12 13:12:49,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:49,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 28 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820397276] [2024-11-12 13:12:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820397276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557497339] [2024-11-12 13:12:50,235 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 13:12:50,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:50,236 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:12:50,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 13:12:50,353 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-12 13:12:50,353 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:50,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-12 13:12:50,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:50,365 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 [2024-11-12 13:12:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:50,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:51,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557497339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:51,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:51,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 49 [2024-11-12 13:12:51,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768710355] [2024-11-12 13:12:51,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:51,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-12 13:12:51,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-12 13:12:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2132, Unknown=0, NotChecked=0, Total=2450 [2024-11-12 13:12:51,269 INFO L87 Difference]: Start difference. First operand 290 states and 320 transitions. Second operand has 50 states, 49 states have (on average 3.5714285714285716) internal successors, (175), 50 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:12:51,916 INFO L93 Difference]: Finished difference Result 364 states and 397 transitions. [2024-11-12 13:12:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 13:12:51,917 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 3.5714285714285716) internal successors, (175), 50 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-12 13:12:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:12:51,918 INFO L225 Difference]: With dead ends: 364 [2024-11-12 13:12:51,918 INFO L226 Difference]: Without dead ends: 364 [2024-11-12 13:12:51,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=491, Invalid=3669, Unknown=0, NotChecked=0, Total=4160 [2024-11-12 13:12:51,919 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 162 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 13:12:51,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 802 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 13:12:51,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-12 13:12:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 310. [2024-11-12 13:12:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.110032362459547) internal successors, (343), 309 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 343 transitions. [2024-11-12 13:12:51,925 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 343 transitions. Word has length 71 [2024-11-12 13:12:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:12:51,925 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 343 transitions. [2024-11-12 13:12:51,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 3.5714285714285716) internal successors, (175), 50 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:12:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 343 transitions. [2024-11-12 13:12:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-12 13:12:51,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:12:51,926 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:12:51,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-12 13:12:52,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-12 13:12:52,127 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:12:52,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:12:52,128 INFO L85 PathProgramCache]: Analyzing trace with hash 712220186, now seen corresponding path program 12 times [2024-11-12 13:12:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:12:52,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101792879] [2024-11-12 13:12:52,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:12:52,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:12:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:12:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 14 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:52,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:12:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101792879] [2024-11-12 13:12:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101792879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:12:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897030587] [2024-11-12 13:12:52,751 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 13:12:52,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:12:52,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:12:52,752 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:12:52,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 13:12:53,018 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-12 13:12:53,018 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:12:53,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-12 13:12:53,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:12:53,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 13:12:53,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-12 13:12:53,581 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 13:12:53,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:12:53,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-12 13:12:54,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:12:54,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2024-11-12 13:12:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 45 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:54,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:12:55,377 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 21 treesize of output 17 [2024-11-12 13:12:55,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-12 13:12:55,384 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 16 treesize of output 12 [2024-11-12 13:12:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 45 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:12:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897030587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:12:55,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:12:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 25] total 75 [2024-11-12 13:12:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163687947] [2024-11-12 13:12:55,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:12:55,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-12 13:12:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:12:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-12 13:12:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=5175, Unknown=0, NotChecked=0, Total=5550 [2024-11-12 13:12:55,941 INFO L87 Difference]: Start difference. First operand 310 states and 343 transitions. Second operand has 75 states, 75 states have (on average 2.96) internal successors, (222), 75 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:13:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:13:00,526 INFO L93 Difference]: Finished difference Result 765 states and 823 transitions. [2024-11-12 13:13:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-12 13:13:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.96) internal successors, (222), 75 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-12 13:13:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:13:00,528 INFO L225 Difference]: With dead ends: 765 [2024-11-12 13:13:00,528 INFO L226 Difference]: Without dead ends: 493 [2024-11-12 13:13:00,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5857 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1611, Invalid=22569, Unknown=0, NotChecked=0, Total=24180 [2024-11-12 13:13:00,530 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 468 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:13:00,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1454 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-12 13:13:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-12 13:13:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 346. [2024-11-12 13:13:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.107246376811594) internal successors, (382), 345 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:13:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 382 transitions. [2024-11-12 13:13:00,540 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 382 transitions. Word has length 76 [2024-11-12 13:13:00,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:13:00,540 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 382 transitions. [2024-11-12 13:13:00,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.96) internal successors, (222), 75 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:13:00,541 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 382 transitions. [2024-11-12 13:13:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-12 13:13:00,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:13:00,542 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:13:00,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-12 13:13:00,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-12 13:13:00,742 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:13:00,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:13:00,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1142170594, now seen corresponding path program 13 times [2024-11-12 13:13:00,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:13:00,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666493165] [2024-11-12 13:13:00,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:13:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:13:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:13:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:13:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:13:01,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666493165] [2024-11-12 13:13:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666493165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:13:01,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332962517] [2024-11-12 13:13:01,531 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 13:13:01,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:13:01,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:13:01,533 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:13:01,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 13:13:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:13:01,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-12 13:13:01,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:13:01,897 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 13 treesize of output 9 [2024-11-12 13:13:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:13:02,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:13:02,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-12 13:13:02,108 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 16 treesize of output 12 [2024-11-12 13:13:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:13:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332962517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:13:02,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:13:02,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 42 [2024-11-12 13:13:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009264628] [2024-11-12 13:13:02,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:13:02,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-12 13:13:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:13:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-12 13:13:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1602, Unknown=0, NotChecked=0, Total=1722 [2024-11-12 13:13:02,193 INFO L87 Difference]: Start difference. First operand 346 states and 382 transitions. Second operand has 42 states, 42 states have (on average 3.119047619047619) internal successors, (131), 42 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:13:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:13:03,095 INFO L93 Difference]: Finished difference Result 633 states and 693 transitions. [2024-11-12 13:13:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-12 13:13:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.119047619047619) internal successors, (131), 42 states have internal predecessors, (131), 0 states have call successors, (0), 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 85 [2024-11-12 13:13:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:13:03,096 INFO L225 Difference]: With dead ends: 633 [2024-11-12 13:13:03,097 INFO L226 Difference]: Without dead ends: 374 [2024-11-12 13:13:03,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=3538, Unknown=0, NotChecked=0, Total=3782 [2024-11-12 13:13:03,098 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 111 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 13:13:03,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1837 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 13:13:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-12 13:13:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 362. [2024-11-12 13:13:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.1024930747922437) internal successors, (398), 361 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:13:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 398 transitions. [2024-11-12 13:13:03,103 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 398 transitions. Word has length 85 [2024-11-12 13:13:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:13:03,103 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 398 transitions. [2024-11-12 13:13:03,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.119047619047619) internal successors, (131), 42 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:13:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 398 transitions. [2024-11-12 13:13:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-12 13:13:03,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:13:03,105 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:13:03,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-12 13:13:03,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:13:03,310 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-12 13:13:03,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:13:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1872678559, now seen corresponding path program 14 times [2024-11-12 13:13:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:13:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680289759] [2024-11-12 13:13:03,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:13:03,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:13:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:13:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 66 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:13:04,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:13:04,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680289759] [2024-11-12 13:13:04,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680289759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:13:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446197604] [2024-11-12 13:13:04,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:13:04,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:13:04,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:13:04,047 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:13:04,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-12 13:13:04,189 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:13:04,189 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:13:04,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-12 13:13:04,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:13:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:13:04,545 INFO L312 TraceCheckSpWp]: Computing backward predicates...