./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/cstrcmp-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 382beab9cdcef42f6594628efe520684fdbc8c72ada26cb53ddf4918b8957d49 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:29:37,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:29:37,446 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 18:29:37,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:29:37,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:29:37,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:29:37,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:29:37,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:29:37,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:29:37,491 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:29:37,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:29:37,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:29:37,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:29:37,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:29:37,493 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:29:37,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:29:37,494 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:29:37,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:29:37,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:29:37,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:29:37,495 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:29:37,495 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:29:37,495 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:29:37,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:29:37,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:29:37,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:29:37,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:29:37,496 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:29:37,497 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:29:37,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:29:37,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:29:37,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:29:37,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:29:37,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:29:37,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:29:37,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:29:37,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:29:37,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:29:37,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:29:37,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:29:37,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:29:37,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:29:37,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 382beab9cdcef42f6594628efe520684fdbc8c72ada26cb53ddf4918b8957d49 [2024-11-22 18:29:37,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:29:37,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:29:37,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:29:37,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:29:37,700 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:29:37,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2024-11-22 18:29:39,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:29:39,267 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:29:39,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2024-11-22 18:29:39,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c831cc043/093b384bcedd49e897da48d4cca2890c/FLAG30f60d911 [2024-11-22 18:29:39,601 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c831cc043/093b384bcedd49e897da48d4cca2890c [2024-11-22 18:29:39,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:29:39,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:29:39,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:29:39,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:29:39,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:29:39,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:39,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1568eac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39, skipping insertion in model container [2024-11-22 18:29:39,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:39,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:29:39,905 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 18:29:39,906 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 18:29:39,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:29:39,919 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:29:39,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:29:39,983 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:29:39,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39 WrapperNode [2024-11-22 18:29:39,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:29:39,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:29:39,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:29:39,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:29:39,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,022 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2024-11-22 18:29:40,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:29:40,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:29:40,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:29:40,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:29:40,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,050 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [4, 5]. 56 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]. [2024-11-22 18:29:40,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:29:40,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:29:40,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:29:40,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:29:40,068 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (1/1) ... [2024-11-22 18:29:40,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:29:40,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:40,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 18:29:40,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 18:29:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 18:29:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 18:29:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 18:29:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 18:29:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 18:29:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:29:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:29:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:29:40,239 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:29:40,241 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:29:40,419 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-22 18:29:40,420 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:29:40,432 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:29:40,433 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 18:29:40,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:29:40 BoogieIcfgContainer [2024-11-22 18:29:40,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:29:40,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:29:40,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:29:40,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:29:40,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:29:39" (1/3) ... [2024-11-22 18:29:40,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ed4b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:29:40, skipping insertion in model container [2024-11-22 18:29:40,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:39" (2/3) ... [2024-11-22 18:29:40,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ed4b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:29:40, skipping insertion in model container [2024-11-22 18:29:40,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:29:40" (3/3) ... [2024-11-22 18:29:40,440 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcmp-alloca-2.i [2024-11-22 18:29:40,452 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:29:40,452 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-11-22 18:29:40,479 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:29:40,484 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;@3e9ba165, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:29:40,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-22 18:29:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.875) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:29:40,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:40,491 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:40,492 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:40,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:40,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-22 18:29:40,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:40,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374758098] [2024-11-22 18:29:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:40,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:40,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:40,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374758098] [2024-11-22 18:29:40,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374758098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:40,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:40,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:29:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884100350] [2024-11-22 18:29:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:40,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:40,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:40,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:40,697 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.875) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-22 18:29:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:40,787 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2024-11-22 18:29:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:40,796 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 [2024-11-22 18:29:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:40,801 INFO L225 Difference]: With dead ends: 65 [2024-11-22 18:29:40,801 INFO L226 Difference]: Without dead ends: 63 [2024-11-22 18:29:40,803 INFO L431 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 [2024-11-22 18:29:40,805 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 112 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 [2024-11-22 18:29:40,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 112 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-22 18:29:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2024-11-22 18:29:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2024-11-22 18:29:40,828 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 7 [2024-11-22 18:29:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:40,828 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2024-11-22 18:29:40,828 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) [2024-11-22 18:29:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2024-11-22 18:29:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:29:40,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:40,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:40,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:29:40,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:40,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2024-11-22 18:29:40,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:40,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245269896] [2024-11-22 18:29:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:40,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:40,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:40,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245269896] [2024-11-22 18:29:40,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245269896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:40,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:40,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:29:40,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400081315] [2024-11-22 18:29:40,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:40,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:29:40,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:29:40,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:40,977 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:41,008 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-22 18:29:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:29:41,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 18:29:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:41,010 INFO L225 Difference]: With dead ends: 51 [2024-11-22 18:29:41,010 INFO L226 Difference]: Without dead ends: 51 [2024-11-22 18:29:41,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:41,011 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:41,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 61 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-22 18:29:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-22 18:29:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-22 18:29:41,022 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 7 [2024-11-22 18:29:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:41,022 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-22 18:29:41,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:41,022 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-22 18:29:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:29:41,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:41,023 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:41,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:29:41,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:41,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2024-11-22 18:29:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581354576] [2024-11-22 18:29:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581354576] [2024-11-22 18:29:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581354576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:41,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:29:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953637281] [2024-11-22 18:29:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:41,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:29:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:29:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:29:41,299 INFO L87 Difference]: Start difference. First operand 51 states and 57 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) [2024-11-22 18:29:41,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:41,375 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2024-11-22 18:29:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:29:41,376 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 [2024-11-22 18:29:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:41,377 INFO L225 Difference]: With dead ends: 55 [2024-11-22 18:29:41,378 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 18:29:41,378 INFO L431 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 [2024-11-22 18:29:41,379 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:41,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 109 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 18:29:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-22 18:29:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2024-11-22 18:29:41,385 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 7 [2024-11-22 18:29:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:41,386 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2024-11-22 18:29:41,386 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) [2024-11-22 18:29:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2024-11-22 18:29:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 18:29:41,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:41,386 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:41,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 18:29:41,387 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:41,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2024-11-22 18:29:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:41,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127387047] [2024-11-22 18:29:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:41,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:41,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127387047] [2024-11-22 18:29:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127387047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:41,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:41,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:29:41,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032093483] [2024-11-22 18:29:41,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:41,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:41,427 INFO L87 Difference]: Start difference. First operand 53 states and 60 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) [2024-11-22 18:29:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:41,455 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2024-11-22 18:29:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:41,455 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 [2024-11-22 18:29:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:41,456 INFO L225 Difference]: With dead ends: 70 [2024-11-22 18:29:41,456 INFO L226 Difference]: Without dead ends: 70 [2024-11-22 18:29:41,456 INFO L431 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 [2024-11-22 18:29:41,458 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:41,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-22 18:29:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2024-11-22 18:29:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.574468085106383) internal successors, (74), 63 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) [2024-11-22 18:29:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2024-11-22 18:29:41,464 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 9 [2024-11-22 18:29:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:41,465 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2024-11-22 18:29:41,465 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) [2024-11-22 18:29:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2024-11-22 18:29:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 18:29:41,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:41,466 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:41,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 18:29:41,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:41,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2024-11-22 18:29:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362743343] [2024-11-22 18:29:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:41,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:41,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362743343] [2024-11-22 18:29:41,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362743343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:41,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:41,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:29:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468171576] [2024-11-22 18:29:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:41,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:29:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:29:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:41,509 INFO L87 Difference]: Start difference. First operand 64 states and 74 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) [2024-11-22 18:29:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:41,537 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-22 18:29:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:29:41,538 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 [2024-11-22 18:29:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:41,538 INFO L225 Difference]: With dead ends: 62 [2024-11-22 18:29:41,538 INFO L226 Difference]: Without dead ends: 62 [2024-11-22 18:29:41,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:41,539 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:41,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-22 18:29:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-22 18:29:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2024-11-22 18:29:41,543 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 9 [2024-11-22 18:29:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:41,543 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2024-11-22 18:29:41,543 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) [2024-11-22 18:29:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2024-11-22 18:29:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 18:29:41,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:41,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:41,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 18:29:41,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:41,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2024-11-22 18:29:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:41,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182689257] [2024-11-22 18:29:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:41,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:41,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:41,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182689257] [2024-11-22 18:29:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182689257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:41,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:29:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464524875] [2024-11-22 18:29:41,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:41,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:29:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:29:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:29:41,717 INFO L87 Difference]: Start difference. First operand 62 states and 72 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) [2024-11-22 18:29:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:41,781 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2024-11-22 18:29:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:29:41,782 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 [2024-11-22 18:29:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:41,782 INFO L225 Difference]: With dead ends: 66 [2024-11-22 18:29:41,783 INFO L226 Difference]: Without dead ends: 66 [2024-11-22 18:29:41,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:29:41,783 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 37 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:41,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 112 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-22 18:29:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2024-11-22 18:29:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.530612244897959) internal successors, (75), 63 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) [2024-11-22 18:29:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2024-11-22 18:29:41,787 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 9 [2024-11-22 18:29:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:41,787 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2024-11-22 18:29:41,787 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) [2024-11-22 18:29:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2024-11-22 18:29:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 18:29:41,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:41,791 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:41,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 18:29:41,792 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:41,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash 629683416, now seen corresponding path program 1 times [2024-11-22 18:29:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:41,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519451126] [2024-11-22 18:29:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:41,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:41,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:41,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519451126] [2024-11-22 18:29:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519451126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:41,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142662546] [2024-11-22 18:29:41,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:41,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:41,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:41,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:41,864 INFO L87 Difference]: Start difference. First operand 64 states and 75 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) [2024-11-22 18:29:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:41,877 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2024-11-22 18:29:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:41,878 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 [2024-11-22 18:29:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:41,878 INFO L225 Difference]: With dead ends: 76 [2024-11-22 18:29:41,878 INFO L226 Difference]: Without dead ends: 76 [2024-11-22 18:29:41,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:41,879 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:41,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 91 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-22 18:29:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-22 18:29:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2024-11-22 18:29:41,883 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 10 [2024-11-22 18:29:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:41,883 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2024-11-22 18:29:41,883 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) [2024-11-22 18:29:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2024-11-22 18:29:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 18:29:41,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:41,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:41,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:29:41,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:41,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:41,885 INFO L85 PathProgramCache]: Analyzing trace with hash -179663210, now seen corresponding path program 1 times [2024-11-22 18:29:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:41,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684383871] [2024-11-22 18:29:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:41,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:41,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684383871] [2024-11-22 18:29:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684383871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:41,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:41,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:29:41,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157035377] [2024-11-22 18:29:41,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:41,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:29:41,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:29:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:29:41,978 INFO L87 Difference]: Start difference. First operand 75 states and 89 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) [2024-11-22 18:29:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:42,009 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2024-11-22 18:29:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:29:42,009 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 [2024-11-22 18:29:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:42,010 INFO L225 Difference]: With dead ends: 91 [2024-11-22 18:29:42,010 INFO L226 Difference]: Without dead ends: 91 [2024-11-22 18:29:42,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:29:42,011 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 32 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:42,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 88 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-22 18:29:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 75. [2024-11-22 18:29:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2024-11-22 18:29:42,014 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 10 [2024-11-22 18:29:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:42,014 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2024-11-22 18:29:42,014 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) [2024-11-22 18:29:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2024-11-22 18:29:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 18:29:42,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:42,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:42,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 18:29:42,015 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:42,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1954650589, now seen corresponding path program 1 times [2024-11-22 18:29:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128956438] [2024-11-22 18:29:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:42,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:42,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128956438] [2024-11-22 18:29:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128956438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:42,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541962505] [2024-11-22 18:29:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:42,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:42,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:42,094 INFO L87 Difference]: Start difference. First operand 75 states and 89 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) [2024-11-22 18:29:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:42,114 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2024-11-22 18:29:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:42,114 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 [2024-11-22 18:29:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:42,115 INFO L225 Difference]: With dead ends: 82 [2024-11-22 18:29:42,115 INFO L226 Difference]: Without dead ends: 82 [2024-11-22 18:29:42,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:42,115 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 87 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 [2024-11-22 18:29:42,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 87 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-22 18:29:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-22 18:29:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 79 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2024-11-22 18:29:42,122 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 11 [2024-11-22 18:29:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:42,122 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2024-11-22 18:29:42,122 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) [2024-11-22 18:29:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2024-11-22 18:29:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 18:29:42,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:42,123 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:42,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 18:29:42,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1530970081, now seen corresponding path program 1 times [2024-11-22 18:29:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146319432] [2024-11-22 18:29:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:42,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:42,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146319432] [2024-11-22 18:29:42,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146319432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:42,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:42,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:29:42,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776020774] [2024-11-22 18:29:42,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:42,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:29:42,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:42,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:29:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:29:42,238 INFO L87 Difference]: Start difference. First operand 80 states and 95 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) [2024-11-22 18:29:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:42,258 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2024-11-22 18:29:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:29:42,259 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 [2024-11-22 18:29:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:42,259 INFO L225 Difference]: With dead ends: 79 [2024-11-22 18:29:42,259 INFO L226 Difference]: Without dead ends: 79 [2024-11-22 18:29:42,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:29:42,260 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 33 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 67 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 [2024-11-22 18:29:42,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-22 18:29:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-22 18:29:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 73 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-22 18:29:42,268 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 11 [2024-11-22 18:29:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:42,269 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-22 18:29:42,269 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) [2024-11-22 18:29:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-22 18:29:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 18:29:42,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:42,270 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:42,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 18:29:42,270 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:42,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2024-11-22 18:29:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:42,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525580042] [2024-11-22 18:29:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:42,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525580042] [2024-11-22 18:29:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525580042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:42,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379486979] [2024-11-22 18:29:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:42,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:42,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:42,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:29:42,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:29:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:42,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 18:29:42,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:42,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:29:42,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-22 18:29:42,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-22 18:29:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:42,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:42,812 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:29:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:42,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379486979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:42,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:42,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-22 18:29:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831806704] [2024-11-22 18:29:42,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:42,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 18:29:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 18:29:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:29:42,825 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:42,956 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2024-11-22 18:29:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:29:42,956 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-22 18:29:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:42,957 INFO L225 Difference]: With dead ends: 79 [2024-11-22 18:29:42,957 INFO L226 Difference]: Without dead ends: 79 [2024-11-22 18:29:42,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:29:42,957 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 36 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:42,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 171 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-22 18:29:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2024-11-22 18:29:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 70 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) [2024-11-22 18:29:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2024-11-22 18:29:42,960 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 11 [2024-11-22 18:29:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:42,960 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2024-11-22 18:29:42,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2024-11-22 18:29:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:29:42,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:42,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:42,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 18:29:43,161 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 [2024-11-22 18:29:43,162 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:43,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1518507737, now seen corresponding path program 1 times [2024-11-22 18:29:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728924591] [2024-11-22 18:29:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:43,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:43,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728924591] [2024-11-22 18:29:43,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728924591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:43,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:43,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:43,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962208349] [2024-11-22 18:29:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:43,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:43,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:43,190 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:43,234 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-11-22 18:29:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 18:29:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:43,235 INFO L225 Difference]: With dead ends: 68 [2024-11-22 18:29:43,235 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 18:29:43,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:43,236 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:43,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 62 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 18:29:43,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-22 18:29:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.396551724137931) internal successors, (81), 67 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2024-11-22 18:29:43,238 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 13 [2024-11-22 18:29:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:43,238 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2024-11-22 18:29:43,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2024-11-22 18:29:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:29:43,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:43,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:43,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 18:29:43,239 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:43,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1518507736, now seen corresponding path program 1 times [2024-11-22 18:29:43,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:43,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028250821] [2024-11-22 18:29:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:43,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028250821] [2024-11-22 18:29:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028250821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:43,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:43,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:29:43,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535053968] [2024-11-22 18:29:43,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:43,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:29:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:29:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:29:43,298 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:43,355 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2024-11-22 18:29:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:29:43,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 18:29:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:43,356 INFO L225 Difference]: With dead ends: 81 [2024-11-22 18:29:43,356 INFO L226 Difference]: Without dead ends: 81 [2024-11-22 18:29:43,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:29:43,357 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 41 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:43,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 109 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-22 18:29:43,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2024-11-22 18:29:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 75 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2024-11-22 18:29:43,359 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 13 [2024-11-22 18:29:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:43,359 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2024-11-22 18:29:43,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2024-11-22 18:29:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:29:43,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:43,360 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:43,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 18:29:43,361 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:43,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2024-11-22 18:29:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:43,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517262575] [2024-11-22 18:29:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:43,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517262575] [2024-11-22 18:29:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517262575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:43,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388236064] [2024-11-22 18:29:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:43,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:43,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:43,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:29:43,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:29:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:43,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 18:29:43,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:43,546 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 7 [2024-11-22 18:29:43,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-22 18:29:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:43,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:43,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388236064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:43,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:43,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-22 18:29:43,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978408994] [2024-11-22 18:29:43,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:43,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 18:29:43,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:43,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 18:29:43,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-22 18:29:43,802 INFO L87 Difference]: Start difference. First operand 76 states and 93 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) [2024-11-22 18:29:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:43,977 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2024-11-22 18:29:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:29:43,977 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 [2024-11-22 18:29:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:43,979 INFO L225 Difference]: With dead ends: 81 [2024-11-22 18:29:43,979 INFO L226 Difference]: Without dead ends: 81 [2024-11-22 18:29:43,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-22 18:29:43,980 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:43,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 178 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-22 18:29:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2024-11-22 18:29:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 70 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-11-22 18:29:43,982 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 13 [2024-11-22 18:29:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:43,982 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-11-22 18:29:43,982 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) [2024-11-22 18:29:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-11-22 18:29:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:29:43,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:43,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:43,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 18:29:44,183 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,SelfDestructingSolverStorable13 [2024-11-22 18:29:44,183 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:44,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash -115553677, now seen corresponding path program 1 times [2024-11-22 18:29:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080912913] [2024-11-22 18:29:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:44,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:44,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080912913] [2024-11-22 18:29:44,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080912913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:44,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:44,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:29:44,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259585870] [2024-11-22 18:29:44,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:44,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:29:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:29:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:29:44,321 INFO L87 Difference]: Start difference. First operand 71 states and 85 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) [2024-11-22 18:29:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:44,338 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2024-11-22 18:29:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:29:44,339 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 [2024-11-22 18:29:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:44,339 INFO L225 Difference]: With dead ends: 70 [2024-11-22 18:29:44,339 INFO L226 Difference]: Without dead ends: 70 [2024-11-22 18:29:44,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:29:44,340 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:44,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 67 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-22 18:29:44,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2024-11-22 18:29:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 58 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2024-11-22 18:29:44,342 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 14 [2024-11-22 18:29:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:44,342 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2024-11-22 18:29:44,342 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) [2024-11-22 18:29:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2024-11-22 18:29:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:29:44,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:44,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:44,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 18:29:44,343 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:44,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1758949997, now seen corresponding path program 1 times [2024-11-22 18:29:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:44,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140052065] [2024-11-22 18:29:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:44,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:44,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:44,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140052065] [2024-11-22 18:29:44,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140052065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:44,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:44,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:44,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42295895] [2024-11-22 18:29:44,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:44,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:44,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:44,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:44,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:44,373 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2024-11-22 18:29:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:44,398 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-22 18:29:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:44,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 [2024-11-22 18:29:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:44,399 INFO L225 Difference]: With dead ends: 57 [2024-11-22 18:29:44,399 INFO L226 Difference]: Without dead ends: 57 [2024-11-22 18:29:44,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:44,399 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:44,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 58 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-22 18:29:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-22 18:29:44,401 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) [2024-11-22 18:29:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-22 18:29:44,401 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 17 [2024-11-22 18:29:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:44,401 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-22 18:29:44,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2024-11-22 18:29:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-22 18:29:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:29:44,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:44,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:44,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 18:29:44,402 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:44,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1758949998, now seen corresponding path program 1 times [2024-11-22 18:29:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081603334] [2024-11-22 18:29:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:44,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081603334] [2024-11-22 18:29:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081603334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:44,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:29:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225809555] [2024-11-22 18:29:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:44,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:29:44,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:44,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:29:44,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:29:44,503 INFO L87 Difference]: Start difference. First operand 57 states and 67 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) [2024-11-22 18:29:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:44,555 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2024-11-22 18:29:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:29:44,556 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 [2024-11-22 18:29:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:44,556 INFO L225 Difference]: With dead ends: 64 [2024-11-22 18:29:44,556 INFO L226 Difference]: Without dead ends: 64 [2024-11-22 18:29:44,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:29:44,557 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:44,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 108 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-22 18:29:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-22 18:29:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 58 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-11-22 18:29:44,558 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 17 [2024-11-22 18:29:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:44,558 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-11-22 18:29:44,559 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) [2024-11-22 18:29:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-11-22 18:29:44,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:29:44,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:44,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:44,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 18:29:44,560 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:44,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1758959071, now seen corresponding path program 1 times [2024-11-22 18:29:44,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:44,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932550987] [2024-11-22 18:29:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:44,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932550987] [2024-11-22 18:29:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932550987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:44,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505912151] [2024-11-22 18:29:44,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:44,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:29:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:29:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:44,578 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2024-11-22 18:29:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:44,584 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2024-11-22 18:29:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:29:44,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 [2024-11-22 18:29:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:44,585 INFO L225 Difference]: With dead ends: 61 [2024-11-22 18:29:44,585 INFO L226 Difference]: Without dead ends: 61 [2024-11-22 18:29:44,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:44,587 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:44,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-22 18:29:44,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-22 18:29:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 60 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-11-22 18:29:44,588 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 17 [2024-11-22 18:29:44,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:44,588 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-11-22 18:29:44,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2024-11-22 18:29:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-11-22 18:29:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:29:44,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:44,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:44,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 18:29:44,589 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:44,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2016571955, now seen corresponding path program 1 times [2024-11-22 18:29:44,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:44,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002259653] [2024-11-22 18:29:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:44,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:44,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:44,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002259653] [2024-11-22 18:29:44,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002259653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:44,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:44,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:29:44,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561675446] [2024-11-22 18:29:44,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:44,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:29:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:44,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:29:44,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:29:44,718 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:44,769 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2024-11-22 18:29:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:29:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-22 18:29:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:44,770 INFO L225 Difference]: With dead ends: 77 [2024-11-22 18:29:44,770 INFO L226 Difference]: Without dead ends: 77 [2024-11-22 18:29:44,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:29:44,771 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:44,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 208 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-22 18:29:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-11-22 18:29:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2024-11-22 18:29:44,772 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2024-11-22 18:29:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:44,773 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2024-11-22 18:29:44,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2024-11-22 18:29:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:29:44,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:44,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:44,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 18:29:44,774 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:44,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash 284250635, now seen corresponding path program 1 times [2024-11-22 18:29:44,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:44,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827162053] [2024-11-22 18:29:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:44,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:44,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:44,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827162053] [2024-11-22 18:29:44,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827162053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:44,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:44,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 18:29:44,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178134879] [2024-11-22 18:29:44,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:44,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 18:29:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 18:29:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:29:44,889 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:44,950 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2024-11-22 18:29:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:29:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-22 18:29:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:44,950 INFO L225 Difference]: With dead ends: 99 [2024-11-22 18:29:44,950 INFO L226 Difference]: Without dead ends: 99 [2024-11-22 18:29:44,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:29:44,951 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:44,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 191 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-22 18:29:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2024-11-22 18:29:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2024-11-22 18:29:44,953 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 20 [2024-11-22 18:29:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:44,953 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2024-11-22 18:29:44,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2024-11-22 18:29:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-22 18:29:44,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:44,954 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:44,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 18:29:44,954 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:44,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:44,954 INFO L85 PathProgramCache]: Analyzing trace with hash 113695496, now seen corresponding path program 1 times [2024-11-22 18:29:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:44,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561691755] [2024-11-22 18:29:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:45,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561691755] [2024-11-22 18:29:45,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561691755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:45,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:45,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987084809] [2024-11-22 18:29:45,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:45,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:45,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:45,034 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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) [2024-11-22 18:29:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:45,052 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2024-11-22 18:29:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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 [2024-11-22 18:29:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:45,052 INFO L225 Difference]: With dead ends: 76 [2024-11-22 18:29:45,052 INFO L226 Difference]: Without dead ends: 50 [2024-11-22 18:29:45,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:45,053 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 58 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 [2024-11-22 18:29:45,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 58 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-22 18:29:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-22 18:29:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 49 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) [2024-11-22 18:29:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-11-22 18:29:45,067 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 22 [2024-11-22 18:29:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:45,067 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-11-22 18:29:45,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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) [2024-11-22 18:29:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-11-22 18:29:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 18:29:45,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:45,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:45,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 18:29:45,068 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:45,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:45,069 INFO L85 PathProgramCache]: Analyzing trace with hash 887365032, now seen corresponding path program 1 times [2024-11-22 18:29:45,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:45,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374680748] [2024-11-22 18:29:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:45,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:45,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:45,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374680748] [2024-11-22 18:29:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374680748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:45,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973391480] [2024-11-22 18:29:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:45,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:45,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:45,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:29:45,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:29:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:45,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 18:29:45,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:45,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:45,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-22 18:29:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973391480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:45,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-22 18:29:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666063448] [2024-11-22 18:29:45,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:45,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 18:29:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 18:29:45,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:29:45,416 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 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) [2024-11-22 18:29:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:45,515 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2024-11-22 18:29:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:29:45,515 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 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) Word has length 24 [2024-11-22 18:29:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:45,515 INFO L225 Difference]: With dead ends: 64 [2024-11-22 18:29:45,515 INFO L226 Difference]: Without dead ends: 64 [2024-11-22 18:29:45,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:29:45,516 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:45,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 200 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-22 18:29:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2024-11-22 18:29:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 1.173913043478261) internal successors, (54), 48 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) [2024-11-22 18:29:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-11-22 18:29:45,518 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 24 [2024-11-22 18:29:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:45,518 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-11-22 18:29:45,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 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) [2024-11-22 18:29:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-11-22 18:29:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 18:29:45,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:45,518 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:45,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 18:29:45,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:45,723 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:45,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash -993007890, now seen corresponding path program 1 times [2024-11-22 18:29:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631054767] [2024-11-22 18:29:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:45,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:45,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631054767] [2024-11-22 18:29:45,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631054767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:45,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230494925] [2024-11-22 18:29:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:45,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:45,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:45,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:29:45,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:29:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:46,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 18:29:46,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:46,118 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 [2024-11-22 18:29:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:46,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:46,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-22 18:29:46,181 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 [2024-11-22 18:29:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230494925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:46,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:46,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-11-22 18:29:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203069580] [2024-11-22 18:29:46,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:46,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 18:29:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 18:29:46,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-22 18:29:46,226 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2024-11-22 18:29:46,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:46,366 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2024-11-22 18:29:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 18:29:46,366 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-22 18:29:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:46,367 INFO L225 Difference]: With dead ends: 86 [2024-11-22 18:29:46,367 INFO L226 Difference]: Without dead ends: 86 [2024-11-22 18:29:46,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-22 18:29:46,367 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:46,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 262 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-22 18:29:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2024-11-22 18:29:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.1466666666666667) internal successors, (86), 77 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) [2024-11-22 18:29:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2024-11-22 18:29:46,369 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 28 [2024-11-22 18:29:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:46,369 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2024-11-22 18:29:46,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2024-11-22 18:29:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2024-11-22 18:29:46,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 18:29:46,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:46,370 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:46,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 18:29:46,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:46,574 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:46,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash -789157989, now seen corresponding path program 1 times [2024-11-22 18:29:46,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:46,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260807092] [2024-11-22 18:29:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:46,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260807092] [2024-11-22 18:29:46,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260807092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:46,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:46,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 18:29:46,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341103530] [2024-11-22 18:29:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:46,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 18:29:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 18:29:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:29:46,741 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:46,836 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2024-11-22 18:29:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 18:29:46,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-22 18:29:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:46,837 INFO L225 Difference]: With dead ends: 100 [2024-11-22 18:29:46,837 INFO L226 Difference]: Without dead ends: 64 [2024-11-22 18:29:46,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:29:46,837 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:46,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 188 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-22 18:29:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-22 18:29:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 63 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2024-11-22 18:29:46,839 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 30 [2024-11-22 18:29:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:46,839 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2024-11-22 18:29:46,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2024-11-22 18:29:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 18:29:46,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:46,840 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:46,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 18:29:46,840 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:46,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:46,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1134070045, now seen corresponding path program 1 times [2024-11-22 18:29:46,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:46,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682706189] [2024-11-22 18:29:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:46,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:47,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:47,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682706189] [2024-11-22 18:29:47,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682706189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:47,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 18:29:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761236435] [2024-11-22 18:29:47,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:47,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 18:29:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 18:29:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:29:47,045 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:47,141 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2024-11-22 18:29:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 18:29:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-22 18:29:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:47,142 INFO L225 Difference]: With dead ends: 94 [2024-11-22 18:29:47,142 INFO L226 Difference]: Without dead ends: 72 [2024-11-22 18:29:47,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-22 18:29:47,143 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:47,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 143 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-22 18:29:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2024-11-22 18:29:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.126984126984127) internal successors, (71), 65 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2024-11-22 18:29:47,144 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 30 [2024-11-22 18:29:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:47,144 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2024-11-22 18:29:47,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2024-11-22 18:29:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-22 18:29:47,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:47,145 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:47,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 18:29:47,145 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:47,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1835423686, now seen corresponding path program 1 times [2024-11-22 18:29:47,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:47,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221615421] [2024-11-22 18:29:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:47,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:47,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:47,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221615421] [2024-11-22 18:29:47,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221615421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:47,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018707411] [2024-11-22 18:29:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:47,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:47,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:47,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:29:47,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:29:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:47,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 18:29:47,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:47,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:47,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-22 18:29:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018707411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:47,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:47,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-22 18:29:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728345825] [2024-11-22 18:29:47,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:47,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 18:29:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 18:29:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:29:47,570 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:47,661 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2024-11-22 18:29:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 18:29:47,661 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-22 18:29:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:47,662 INFO L225 Difference]: With dead ends: 85 [2024-11-22 18:29:47,662 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 18:29:47,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-22 18:29:47,662 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:47,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 210 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 18:29:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-11-22 18:29:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 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) [2024-11-22 18:29:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-11-22 18:29:47,665 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 34 [2024-11-22 18:29:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:47,665 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-11-22 18:29:47,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-11-22 18:29:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-22 18:29:47,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:47,666 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:47,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 18:29:47,870 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,SelfDestructingSolverStorable25 [2024-11-22 18:29:47,871 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:47,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1008700335, now seen corresponding path program 1 times [2024-11-22 18:29:47,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:47,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136844854] [2024-11-22 18:29:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:47,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136844854] [2024-11-22 18:29:48,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136844854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867489359] [2024-11-22 18:29:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:48,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:48,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:48,015 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:29:48,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 18:29:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:48,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 18:29:48,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:48,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:48,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-22 18:29:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:48,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867489359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:48,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:48,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-22 18:29:48,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444346298] [2024-11-22 18:29:48,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:48,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 18:29:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 18:29:48,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-22 18:29:48,331 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 20 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) [2024-11-22 18:29:48,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:48,427 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2024-11-22 18:29:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 18:29:48,428 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 20 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) Word has length 39 [2024-11-22 18:29:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:48,428 INFO L225 Difference]: With dead ends: 62 [2024-11-22 18:29:48,428 INFO L226 Difference]: Without dead ends: 62 [2024-11-22 18:29:48,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-22 18:29:48,428 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:48,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 179 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-22 18:29:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2024-11-22 18:29:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.1) internal successors, (55), 52 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) [2024-11-22 18:29:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2024-11-22 18:29:48,430 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 39 [2024-11-22 18:29:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:48,430 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2024-11-22 18:29:48,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 20 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) [2024-11-22 18:29:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2024-11-22 18:29:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-22 18:29:48,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:48,430 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-22 18:29:48,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 18:29:48,630 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,SelfDestructingSolverStorable26 [2024-11-22 18:29:48,631 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:48,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash 989774103, now seen corresponding path program 1 times [2024-11-22 18:29:48,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:48,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496787338] [2024-11-22 18:29:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496787338] [2024-11-22 18:29:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496787338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587459705] [2024-11-22 18:29:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:48,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:48,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:48,957 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) [2024-11-22 18:29:48,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 18:29:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:49,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-22 18:29:49,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:49,066 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 19 treesize of output 1 [2024-11-22 18:29:49,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-22 18:29:49,185 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 [2024-11-22 18:29:49,460 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-22 18:29:49,460 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 26 treesize of output 11 [2024-11-22 18:29:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:49,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:49,774 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 22 treesize of output 20 [2024-11-22 18:29:49,784 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 34 treesize of output 30 [2024-11-22 18:29:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:50,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587459705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:50,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:50,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 16] total 46 [2024-11-22 18:29:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483497830] [2024-11-22 18:29:50,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:50,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-22 18:29:50,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:50,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-22 18:29:50,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1901, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 18:29:50,061 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:50,867 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2024-11-22 18:29:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 18:29:50,867 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 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) Word has length 43 [2024-11-22 18:29:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:50,868 INFO L225 Difference]: With dead ends: 81 [2024-11-22 18:29:50,868 INFO L226 Difference]: Without dead ends: 63 [2024-11-22 18:29:50,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=348, Invalid=3812, Unknown=0, NotChecked=0, Total=4160 [2024-11-22 18:29:50,869 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:50,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 397 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 18:29:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-22 18:29:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-11-22 18:29:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-11-22 18:29:50,871 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 43 [2024-11-22 18:29:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:50,871 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-11-22 18:29:50,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-11-22 18:29:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-22 18:29:50,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:50,872 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-22 18:29:50,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 18:29:51,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:51,076 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:51,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash 788756762, now seen corresponding path program 2 times [2024-11-22 18:29:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:51,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747150660] [2024-11-22 18:29:51,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:51,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:51,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:51,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747150660] [2024-11-22 18:29:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747150660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358848152] [2024-11-22 18:29:51,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:51,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:51,303 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) [2024-11-22 18:29:51,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 18:29:51,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:51,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:51,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 18:29:51,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:51,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:51,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-22 18:29:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:51,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358848152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:51,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:51,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-22 18:29:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521080373] [2024-11-22 18:29:51,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:51,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 18:29:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 18:29:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2024-11-22 18:29:51,684 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 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) [2024-11-22 18:29:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:51,851 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2024-11-22 18:29:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 18:29:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 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 47 [2024-11-22 18:29:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:51,852 INFO L225 Difference]: With dead ends: 67 [2024-11-22 18:29:51,852 INFO L226 Difference]: Without dead ends: 63 [2024-11-22 18:29:51,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-11-22 18:29:51,853 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:51,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 258 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-22 18:29:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-22 18:29:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 60 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) [2024-11-22 18:29:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2024-11-22 18:29:51,854 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 47 [2024-11-22 18:29:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:51,855 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2024-11-22 18:29:51,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 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) [2024-11-22 18:29:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2024-11-22 18:29:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-22 18:29:51,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:51,855 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:51,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 18:29:52,059 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,SelfDestructingSolverStorable28 [2024-11-22 18:29:52,060 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:52,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash 86636449, now seen corresponding path program 2 times [2024-11-22 18:29:52,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:52,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966641303] [2024-11-22 18:29:52,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:52,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:52,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:52,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:52,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966641303] [2024-11-22 18:29:52,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966641303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109771028] [2024-11-22 18:29:52,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:52,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:52,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:52,371 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) [2024-11-22 18:29:52,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 18:29:52,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:52,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:52,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 18:29:52,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:52,593 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 [2024-11-22 18:29:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:52,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:52,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-22 18:29:52,696 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 [2024-11-22 18:29:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109771028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:52,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2024-11-22 18:29:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238923749] [2024-11-22 18:29:52,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:52,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 18:29:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 18:29:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-22 18:29:52,758 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:52,927 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2024-11-22 18:29:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 18:29:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 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 50 [2024-11-22 18:29:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:52,928 INFO L225 Difference]: With dead ends: 99 [2024-11-22 18:29:52,928 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 18:29:52,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-11-22 18:29:52,929 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:52,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 405 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 18:29:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2024-11-22 18:29:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 64 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) [2024-11-22 18:29:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2024-11-22 18:29:52,930 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 50 [2024-11-22 18:29:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:52,930 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2024-11-22 18:29:52,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2024-11-22 18:29:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-22 18:29:52,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:52,931 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:52,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 18:29:53,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:53,132 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:53,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash 994853246, now seen corresponding path program 3 times [2024-11-22 18:29:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:53,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619121120] [2024-11-22 18:29:53,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:29:53,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:53,149 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 18:29:53,149 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:29:53,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:53,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619121120] [2024-11-22 18:29:53,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619121120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:53,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353650647] [2024-11-22 18:29:53,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:29:53,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:53,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:53,451 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) [2024-11-22 18:29:53,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 18:29:53,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 18:29:53,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:53,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-22 18:29:53,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:53,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 18:29:53,814 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 [2024-11-22 18:29:53,849 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 [2024-11-22 18:29:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:29:54,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:29:54,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2024-11-22 18:29:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:54,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:54,580 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 22 treesize of output 20 [2024-11-22 18:29:54,587 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 34 treesize of output 30 [2024-11-22 18:29:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:29:54,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353650647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:54,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:54,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 18] total 48 [2024-11-22 18:29:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081216164] [2024-11-22 18:29:54,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:54,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-22 18:29:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-22 18:29:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2093, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 18:29:54,852 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 48 states, 48 states have (on average 2.9166666666666665) internal successors, (140), 48 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:55,755 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2024-11-22 18:29:55,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 18:29:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.9166666666666665) internal successors, (140), 48 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-22 18:29:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:55,756 INFO L225 Difference]: With dead ends: 112 [2024-11-22 18:29:55,756 INFO L226 Difference]: Without dead ends: 87 [2024-11-22 18:29:55,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=328, Invalid=3832, Unknown=0, NotChecked=0, Total=4160 [2024-11-22 18:29:55,757 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 88 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:55,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 477 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 18:29:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-22 18:29:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2024-11-22 18:29:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 71 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) [2024-11-22 18:29:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-11-22 18:29:55,759 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 54 [2024-11-22 18:29:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:55,759 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-11-22 18:29:55,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.9166666666666665) internal successors, (140), 48 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-11-22 18:29:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 18:29:55,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:55,760 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:55,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 18:29:55,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-22 18:29:55,964 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:55,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1216377185, now seen corresponding path program 3 times [2024-11-22 18:29:55,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:55,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257327484] [2024-11-22 18:29:55,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:29:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:55,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 18:29:55,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:29:56,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257327484] [2024-11-22 18:29:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257327484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898170715] [2024-11-22 18:29:56,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:29:56,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:56,194 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) [2024-11-22 18:29:56,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 18:29:56,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 18:29:56,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:56,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 18:29:56,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:29:56,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:56,488 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 7 treesize of output 5 [2024-11-22 18:29:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:29:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898170715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:56,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:56,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-22 18:29:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771958668] [2024-11-22 18:29:56,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:56,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 18:29:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 18:29:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-22 18:29:56,518 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 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) [2024-11-22 18:29:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:56,672 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2024-11-22 18:29:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 18:29:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 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 62 [2024-11-22 18:29:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:56,673 INFO L225 Difference]: With dead ends: 82 [2024-11-22 18:29:56,673 INFO L226 Difference]: Without dead ends: 78 [2024-11-22 18:29:56,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 113 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-22 18:29:56,674 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:56,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 305 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-22 18:29:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2024-11-22 18:29:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2024-11-22 18:29:56,675 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 62 [2024-11-22 18:29:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:56,675 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2024-11-22 18:29:56,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 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) [2024-11-22 18:29:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2024-11-22 18:29:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 18:29:56,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:56,676 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:56,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 18:29:56,880 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,SelfDestructingSolverStorable31 [2024-11-22 18:29:56,881 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:29:56,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash 453658106, now seen corresponding path program 4 times [2024-11-22 18:29:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:56,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470988627] [2024-11-22 18:29:56,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 18:29:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:56,916 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 18:29:56,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 46 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:29:57,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:57,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470988627] [2024-11-22 18:29:57,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470988627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:57,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580931739] [2024-11-22 18:29:57,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 18:29:57,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:57,994 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) [2024-11-22 18:29:57,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 18:29:58,077 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 18:29:58,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:58,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-22 18:29:58,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:58,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-22 18:30:00,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:30:00,143 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 79 treesize of output 119 [2024-11-22 18:30:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:30:00,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:01,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:30:01,827 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 83 treesize of output 117 [2024-11-22 18:30:01,856 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 59 treesize of output 51 [2024-11-22 18:30:01,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:30:01,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 59 treesize of output 45 [2024-11-22 18:30:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:30:02,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580931739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:02,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:02,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 93 [2024-11-22 18:30:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409351327] [2024-11-22 18:30:02,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:02,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-22 18:30:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-22 18:30:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=7783, Unknown=0, NotChecked=0, Total=8556 [2024-11-22 18:30:02,218 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 93 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 93 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:03,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:03,404 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2024-11-22 18:30:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-22 18:30:03,407 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 93 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-22 18:30:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:03,408 INFO L225 Difference]: With dead ends: 115 [2024-11-22 18:30:03,408 INFO L226 Difference]: Without dead ends: 83 [2024-11-22 18:30:03,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4434 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1203, Invalid=10139, Unknown=0, NotChecked=0, Total=11342 [2024-11-22 18:30:03,411 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:03,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 446 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 18:30:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-22 18:30:03,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2024-11-22 18:30:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2024-11-22 18:30:03,416 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 65 [2024-11-22 18:30:03,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:03,416 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2024-11-22 18:30:03,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 93 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2024-11-22 18:30:03,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 18:30:03,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:03,417 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:03,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 18:30:03,621 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,SelfDestructingSolverStorable32 [2024-11-22 18:30:03,621 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:30:03,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash -50501187, now seen corresponding path program 5 times [2024-11-22 18:30:03,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:03,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151598203] [2024-11-22 18:30:03,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 18:30:03,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:03,648 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-22 18:30:03,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:03,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151598203] [2024-11-22 18:30:03,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151598203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498602029] [2024-11-22 18:30:03,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 18:30:03,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:03,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:03,946 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) [2024-11-22 18:30:03,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 18:30:04,062 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-22 18:30:04,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:04,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-22 18:30:04,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:04,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 18:30:04,314 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 [2024-11-22 18:30:04,336 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 [2024-11-22 18:30:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:30:04,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:05,093 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 40 [2024-11-22 18:30:05,096 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 62 treesize of output 54 [2024-11-22 18:30:05,147 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 20 treesize of output 18 [2024-11-22 18:30:05,149 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 77 treesize of output 69 [2024-11-22 18:30:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 18:30:05,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498602029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:05,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:05,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 22] total 50 [2024-11-22 18:30:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664554368] [2024-11-22 18:30:05,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:05,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-22 18:30:05,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-22 18:30:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2252, Unknown=0, NotChecked=0, Total=2450 [2024-11-22 18:30:05,263 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 50 states, 50 states have (on average 3.18) internal successors, (159), 50 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:05,786 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2024-11-22 18:30:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 18:30:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.18) internal successors, (159), 50 states have internal predecessors, (159), 0 states have call successors, (0), 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 69 [2024-11-22 18:30:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:05,787 INFO L225 Difference]: With dead ends: 136 [2024-11-22 18:30:05,787 INFO L226 Difference]: Without dead ends: 87 [2024-11-22 18:30:05,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=2444, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 18:30:05,788 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:05,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 607 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 18:30:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-22 18:30:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2024-11-22 18:30:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 83 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) [2024-11-22 18:30:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-11-22 18:30:05,798 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 69 [2024-11-22 18:30:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:05,798 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-11-22 18:30:05,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.18) internal successors, (159), 50 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-11-22 18:30:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 18:30:05,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:05,798 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:05,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 18:30:05,999 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,SelfDestructingSolverStorable33 [2024-11-22 18:30:05,999 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:30:06,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1670213440, now seen corresponding path program 6 times [2024-11-22 18:30:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679865745] [2024-11-22 18:30:06,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 18:30:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:06,055 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 18:30:06,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:06,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679865745] [2024-11-22 18:30:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679865745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122552207] [2024-11-22 18:30:06,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 18:30:06,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:06,762 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) [2024-11-22 18:30:06,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 18:30:06,955 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 18:30:06,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:06,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 18:30:06,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:06,964 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 [2024-11-22 18:30:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:07,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:07,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122552207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:07,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:07,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2024-11-22 18:30:07,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870345104] [2024-11-22 18:30:07,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:07,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 18:30:07,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:07,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 18:30:07,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 18:30:07,411 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 33 states, 32 states have (on average 4.78125) internal successors, (153), 33 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:07,677 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2024-11-22 18:30:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 18:30:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.78125) internal successors, (153), 33 states have internal predecessors, (153), 0 states have call successors, (0), 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 73 [2024-11-22 18:30:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:07,678 INFO L225 Difference]: With dead ends: 96 [2024-11-22 18:30:07,678 INFO L226 Difference]: Without dead ends: 96 [2024-11-22 18:30:07,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 18:30:07,678 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 59 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:07,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 339 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:30:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-22 18:30:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2024-11-22 18:30:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-11-22 18:30:07,680 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 73 [2024-11-22 18:30:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:07,680 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-11-22 18:30:07,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.78125) internal successors, (153), 33 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:07,681 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-11-22 18:30:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-22 18:30:07,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:07,681 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:07,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 18:30:07,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:07,885 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:30:07,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 188681734, now seen corresponding path program 4 times [2024-11-22 18:30:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:07,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341244065] [2024-11-22 18:30:07,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 18:30:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:07,908 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 18:30:07,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:09,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341244065] [2024-11-22 18:30:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341244065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351300807] [2024-11-22 18:30:09,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 18:30:09,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:09,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:09,770 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) [2024-11-22 18:30:09,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 18:30:09,874 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 18:30:09,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:09,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-22 18:30:09,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:09,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-22 18:30:13,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:30:13,087 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 79 treesize of output 119 [2024-11-22 18:30:13,259 INFO L349 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2024-11-22 18:30:13,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 51 [2024-11-22 18:30:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 33 proven. 29 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 18:30:13,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:16,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:30:16,460 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 83 treesize of output 117 [2024-11-22 18:30:16,744 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 59 treesize of output 51 [2024-11-22 18:30:16,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2024-11-22 18:30:16,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-22 18:30:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 18:30:16,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351300807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:16,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:16,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 32] total 97 [2024-11-22 18:30:16,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754395158] [2024-11-22 18:30:16,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:16,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-22 18:30:16,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-22 18:30:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=8832, Unknown=0, NotChecked=0, Total=9506 [2024-11-22 18:30:16,793 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 98 states, 97 states have (on average 1.422680412371134) internal successors, (138), 98 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:21,796 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-11-22 18:30:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-22 18:30:21,796 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.422680412371134) internal successors, (138), 98 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-22 18:30:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:21,797 INFO L225 Difference]: With dead ends: 85 [2024-11-22 18:30:21,797 INFO L226 Difference]: Without dead ends: 81 [2024-11-22 18:30:21,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1664, Invalid=16426, Unknown=0, NotChecked=0, Total=18090 [2024-11-22 18:30:21,799 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 101 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:21,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 680 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 18:30:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-22 18:30:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-22 18:30:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-11-22 18:30:21,801 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 77 [2024-11-22 18:30:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:21,801 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-11-22 18:30:21,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.422680412371134) internal successors, (138), 98 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-11-22 18:30:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 18:30:21,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:21,801 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:21,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 18:30:22,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:22,002 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:30:22,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1094636747, now seen corresponding path program 7 times [2024-11-22 18:30:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:22,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703200743] [2024-11-22 18:30:22,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 18:30:22,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:30:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:22,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703200743] [2024-11-22 18:30:22,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703200743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:22,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509733278] [2024-11-22 18:30:22,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 18:30:22,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:22,348 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) [2024-11-22 18:30:22,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 18:30:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:30:22,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-22 18:30:22,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:22,593 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 [2024-11-22 18:30:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:22,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:22,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-22 18:30:22,698 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 [2024-11-22 18:30:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509733278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:22,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:22,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-11-22 18:30:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169118600] [2024-11-22 18:30:22,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:22,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 18:30:22,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:22,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 18:30:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2024-11-22 18:30:22,775 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:23,094 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2024-11-22 18:30:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 18:30:23,094 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-22 18:30:23,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:23,095 INFO L225 Difference]: With dead ends: 141 [2024-11-22 18:30:23,095 INFO L226 Difference]: Without dead ends: 88 [2024-11-22 18:30:23,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 18:30:23,095 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:23,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 664 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:30:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-22 18:30:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2024-11-22 18:30:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 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) [2024-11-22 18:30:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2024-11-22 18:30:23,099 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 80 [2024-11-22 18:30:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:23,100 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2024-11-22 18:30:23,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2024-11-22 18:30:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 18:30:23,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:23,100 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:23,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 18:30:23,302 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,SelfDestructingSolverStorable36 [2024-11-22 18:30:23,303 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:30:23,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2071106642, now seen corresponding path program 8 times [2024-11-22 18:30:23,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:23,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792729299] [2024-11-22 18:30:23,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:30:23,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:23,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:30:23,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 18:30:23,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792729299] [2024-11-22 18:30:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792729299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155292135] [2024-11-22 18:30:23,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:30:23,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:23,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:23,684 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) [2024-11-22 18:30:23,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 18:30:23,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:30:23,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:23,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-22 18:30:23,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:23,913 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 [2024-11-22 18:30:24,142 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 16 treesize of output 8 [2024-11-22 18:30:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 5 proven. 98 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 18:30:24,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:24,352 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 20 treesize of output 12 [2024-11-22 18:30:24,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-22 18:30:24,386 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 [2024-11-22 18:30:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 5 proven. 98 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 18:30:24,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155292135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:24,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:24,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 21] total 41 [2024-11-22 18:30:24,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777654157] [2024-11-22 18:30:24,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:24,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 18:30:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 18:30:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 18:30:24,467 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:25,654 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2024-11-22 18:30:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-22 18:30:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 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 84 [2024-11-22 18:30:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:25,655 INFO L225 Difference]: With dead ends: 144 [2024-11-22 18:30:25,655 INFO L226 Difference]: Without dead ends: 105 [2024-11-22 18:30:25,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=270, Invalid=4020, Unknown=0, NotChecked=0, Total=4290 [2024-11-22 18:30:25,656 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:25,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 813 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 18:30:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-22 18:30:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-11-22 18:30:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-11-22 18:30:25,658 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 84 [2024-11-22 18:30:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:25,658 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-11-22 18:30:25,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-11-22 18:30:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 18:30:25,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:25,659 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:25,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 18:30:25,862 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,SelfDestructingSolverStorable37 [2024-11-22 18:30:25,863 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:30:25,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:25,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1372076698, now seen corresponding path program 9 times [2024-11-22 18:30:25,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:25,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125366670] [2024-11-22 18:30:25,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:30:25,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:25,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 18:30:25,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 26 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:30:27,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:27,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125366670] [2024-11-22 18:30:27,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125366670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:27,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81441373] [2024-11-22 18:30:27,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:30:27,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:27,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:27,570 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) [2024-11-22 18:30:27,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 18:30:27,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 18:30:27,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:27,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-22 18:30:27,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:28,008 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 [2024-11-22 18:30:28,345 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 16 treesize of output 8 [2024-11-22 18:30:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 6 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 18:30:28,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:28,589 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 20 treesize of output 12 [2024-11-22 18:30:28,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-22 18:30:28,629 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 [2024-11-22 18:30:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 6 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 18:30:28,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81441373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:28,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:28,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 23] total 56 [2024-11-22 18:30:28,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850116200] [2024-11-22 18:30:28,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:28,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-22 18:30:28,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-22 18:30:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2923, Unknown=0, NotChecked=0, Total=3080 [2024-11-22 18:30:28,730 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 56 states, 56 states have (on average 3.232142857142857) internal successors, (181), 56 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:31,816 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-11-22 18:30:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-22 18:30:31,817 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.232142857142857) internal successors, (181), 56 states have internal predecessors, (181), 0 states have call successors, (0), 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 95 [2024-11-22 18:30:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:31,817 INFO L225 Difference]: With dead ends: 229 [2024-11-22 18:30:31,817 INFO L226 Difference]: Without dead ends: 141 [2024-11-22 18:30:31,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=433, Invalid=8123, Unknown=0, NotChecked=0, Total=8556 [2024-11-22 18:30:31,818 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 135 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:31,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1329 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3150 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 18:30:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-22 18:30:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 100. [2024-11-22 18:30:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2024-11-22 18:30:31,820 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 95 [2024-11-22 18:30:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:31,820 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2024-11-22 18:30:31,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.232142857142857) internal successors, (181), 56 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2024-11-22 18:30:31,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 18:30:31,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:31,821 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:31,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 18:30:32,021 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,SelfDestructingSolverStorable38 [2024-11-22 18:30:32,022 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-22 18:30:32,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash 910389737, now seen corresponding path program 10 times [2024-11-22 18:30:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:32,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655902107] [2024-11-22 18:30:32,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 18:30:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:32,112 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 18:30:32,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-22 18:30:33,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:33,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655902107] [2024-11-22 18:30:33,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655902107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:33,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510394095] [2024-11-22 18:30:33,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 18:30:33,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:33,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:33,831 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) [2024-11-22 18:30:33,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 18:30:33,993 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 18:30:33,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:30:33,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-22 18:30:33,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:34,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-22 18:30:39,859 INFO L349 Elim1Store]: treesize reduction 24, result has 64.2 percent of original size [2024-11-22 18:30:39,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 108 [2024-11-22 18:30:39,861 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 18:30:40,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:30:40,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 204 [2024-11-22 18:30:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 90 proven. 21 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-22 18:30:40,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:44,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:30:44,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 220 [2024-11-22 18:30:45,361 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 89 treesize of output 77 [2024-11-22 18:30:45,364 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 15 treesize of output 11 [2024-11-22 18:30:45,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 115 [2024-11-22 18:30:45,375 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 18:30:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-22 18:30:45,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510394095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:45,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:45,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 46, 45] total 113 [2024-11-22 18:30:45,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121927422] [2024-11-22 18:30:45,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:45,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-11-22 18:30:45,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-11-22 18:30:45,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2266, Invalid=10616, Unknown=0, NotChecked=0, Total=12882 [2024-11-22 18:30:45,435 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 114 states, 113 states have (on average 1.3539823008849559) internal successors, (153), 114 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:47,913 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2024-11-22 18:30:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-22 18:30:47,914 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.3539823008849559) internal successors, (153), 114 states have internal predecessors, (153), 0 states have call successors, (0), 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 99 [2024-11-22 18:30:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:47,916 INFO L225 Difference]: With dead ends: 105 [2024-11-22 18:30:47,916 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 18:30:47,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5193 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=3001, Invalid=12251, Unknown=0, NotChecked=0, Total=15252 [2024-11-22 18:30:47,925 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:47,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 553 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 18:30:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 18:30:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 18:30:47,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:47,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 18:30:47,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2024-11-22 18:30:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:47,925 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 18:30:47,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.3539823008849559) internal successors, (153), 114 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:30:47,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 18:30:47,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 18:30:47,931 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 19 remaining) [2024-11-22 18:30:47,932 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2024-11-22 18:30:47,932 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2024-11-22 18:30:47,932 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2024-11-22 18:30:47,932 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 19 remaining) [2024-11-22 18:30:47,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 19 remaining) [2024-11-22 18:30:47,934 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 19 remaining) [2024-11-22 18:30:47,934 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 19 remaining) [2024-11-22 18:30:47,934 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2024-11-22 18:30:47,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2024-11-22 18:30:47,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2024-11-22 18:30:47,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (0 of 19 remaining) [2024-11-22 18:30:47,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 18:30:48,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-22 18:30:48,144 INFO L407 BasicCegarLoop]: Path program histogram: [10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:48,146 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 18:30:48,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 06:30:48 BoogieIcfgContainer [2024-11-22 18:30:48,148 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 18:30:48,150 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 18:30:48,150 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 18:30:48,150 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 18:30:48,152 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:29:40" (3/4) ... [2024-11-22 18:30:48,153 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 18:30:48,170 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-22 18:30:48,171 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-22 18:30:48,171 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-22 18:30:48,171 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 18:30:48,268 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 18:30:48,268 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 18:30:48,268 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 18:30:48,268 INFO L158 Benchmark]: Toolchain (without parser) took 68663.79ms. Allocated memory was 186.6MB in the beginning and 564.1MB in the end (delta: 377.5MB). Free memory was 156.7MB in the beginning and 224.7MB in the end (delta: -68.0MB). Peak memory consumption was 307.8MB. Max. memory is 16.1GB. [2024-11-22 18:30:48,268 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 18:30:48,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.78ms. Allocated memory is still 186.6MB. Free memory was 156.5MB in the beginning and 141.1MB in the end (delta: 15.5MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2024-11-22 18:30:48,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.02ms. Allocated memory is still 186.6MB. Free memory was 140.2MB in the beginning and 138.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 18:30:48,269 INFO L158 Benchmark]: Boogie Preprocessor took 41.63ms. Allocated memory is still 186.6MB. Free memory was 138.8MB in the beginning and 135.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 18:30:48,269 INFO L158 Benchmark]: RCFGBuilder took 365.99ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 119.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-22 18:30:48,269 INFO L158 Benchmark]: TraceAbstraction took 67712.57ms. Allocated memory was 186.6MB in the beginning and 564.1MB in the end (delta: 377.5MB). Free memory was 118.0MB in the beginning and 230.4MB in the end (delta: -112.4MB). Peak memory consumption was 265.3MB. Max. memory is 16.1GB. [2024-11-22 18:30:48,269 INFO L158 Benchmark]: Witness Printer took 118.21ms. Allocated memory is still 564.1MB. Free memory was 230.4MB in the beginning and 224.7MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 18:30:48,272 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.78ms. Allocated memory is still 186.6MB. Free memory was 156.5MB in the beginning and 141.1MB in the end (delta: 15.5MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.02ms. Allocated memory is still 186.6MB. Free memory was 140.2MB in the beginning and 138.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.63ms. Allocated memory is still 186.6MB. Free memory was 138.8MB in the beginning and 135.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.99ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 119.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 67712.57ms. Allocated memory was 186.6MB in the beginning and 564.1MB in the end (delta: 377.5MB). Free memory was 118.0MB in the beginning and 230.4MB in the end (delta: -112.4MB). Peak memory consumption was 265.3MB. Max. memory is 16.1GB. * Witness Printer took 118.21ms. Allocated memory is still 564.1MB. Free memory was 230.4MB in the beginning and 224.7MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 67.7s, OverallIterations: 40, TraceHistogramMax: 6, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1209 SdHoareTripleChecker+Valid, 8.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1209 mSDsluCounter, 10662 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9364 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17251 IncrementalHoareTripleChecker+Invalid, 17379 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 1298 mSDtfsCounter, 17251 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2681 GetRequests, 1633 SyntacticMatches, 18 SemanticMatches, 1030 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20962 ImplicationChecksByTransitivity, 35.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=39, InterpolantAutomatonStates: 588, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 40 MinimizatonAttempts, 246 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 42.7s InterpolantComputationTime, 2397 NumberOfCodeBlocks, 2335 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 3366 ConstructedInterpolants, 228 QuantifiedInterpolants, 45165 SizeOfPredicates, 192 NumberOfNonLiveVariables, 4454 ConjunctsInSsa, 805 ConjunctsInUnsatCore, 78 InterpolantComputations, 21 PerfectInterpolantSequences, 1613/3977 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 18:30:48,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE