./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.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 f22afdea3888c472e42c0b4bee511704d4ceb9c1e2d9f4db0ce5ffbd6de758f0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:31:55,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:31:55,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:31:55,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:31:55,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:31:55,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:31:55,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:31:55,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:31:55,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:31:55,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:31:55,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:31:55,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:31:55,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:31:55,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:31:55,696 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:31:55,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:31:55,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:31:55,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:31:55,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:31:55,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:31:55,703 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:31:55,703 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:31:55,704 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:31:55,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:31:55,704 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:31:55,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:31:55,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:31:55,705 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:31:55,705 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:31:55,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:31:55,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:31:55,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:31:55,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:31:55,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:31:55,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:31:55,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:31:55,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:31:55,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:31:55,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:31:55,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:31:55,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:31:55,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:31:55,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f22afdea3888c472e42c0b4bee511704d4ceb9c1e2d9f4db0ce5ffbd6de758f0 [2024-11-19 06:31:55,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:31:56,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:31:56,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:31:56,009 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:31:56,009 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:31:56,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.i [2024-11-19 06:31:57,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:31:57,683 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:31:57,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.i [2024-11-19 06:31:57,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca0b304d/7b2568b367d74fc88f038367841b3f4e/FLAG217b3819a [2024-11-19 06:31:57,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca0b304d/7b2568b367d74fc88f038367841b3f4e [2024-11-19 06:31:57,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:31:57,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:31:57,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:31:57,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:31:57,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:31:57,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:57" (1/1) ... [2024-11-19 06:31:57,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1836f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:57, skipping insertion in model container [2024-11-19 06:31:57,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:57" (1/1) ... [2024-11-19 06:31:57,774 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:31:58,140 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:31:58,142 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:31:58,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:31:58,157 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:31:58,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:31:58,223 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:31:58,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58 WrapperNode [2024-11-19 06:31:58,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:31:58,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:31:58,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:31:58,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:31:58,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,260 INFO L138 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-19 06:31:58,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:31:58,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:31:58,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:31:58,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:31:58,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,285 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [1, 3]. 75 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 3 writes are split as follows [1, 2]. [2024-11-19 06:31:58,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:31:58,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:31:58,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:31:58,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:31:58,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (1/1) ... [2024-11-19 06:31:58,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:31:58,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:58,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 06:31:58,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 06:31:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:31:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:31:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:31:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:31:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:31:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:31:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:31:58,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:31:58,525 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:31:58,527 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:31:58,701 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-19 06:31:58,702 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:31:58,719 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:31:58,720 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 06:31:58,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:58 BoogieIcfgContainer [2024-11-19 06:31:58,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:31:58,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:31:58,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:31:58,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:31:58,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:31:57" (1/3) ... [2024-11-19 06:31:58,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2b36fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:58, skipping insertion in model container [2024-11-19 06:31:58,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:58" (2/3) ... [2024-11-19 06:31:58,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2b36fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:58, skipping insertion in model container [2024-11-19 06:31:58,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:58" (3/3) ... [2024-11-19 06:31:58,729 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstpcpy-alloca-1.i [2024-11-19 06:31:58,744 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:31:58,745 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-19 06:31:58,788 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:31:58,793 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;@4cf9b3f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:31:58,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-19 06:31:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.8) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:31:58,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:58,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:31:58,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:31:58,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:58,806 INFO L85 PathProgramCache]: Analyzing trace with hash 889510841, now seen corresponding path program 1 times [2024-11-19 06:31:58,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:58,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113411745] [2024-11-19 06:31:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:59,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113411745] [2024-11-19 06:31:59,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113411745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:59,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:59,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:31:59,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337526115] [2024-11-19 06:31:59,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:59,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:31:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:59,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:31:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:59,054 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.8) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:59,117 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-19 06:31:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:31:59,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-19 06:31:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:59,128 INFO L225 Difference]: With dead ends: 31 [2024-11-19 06:31:59,128 INFO L226 Difference]: Without dead ends: 29 [2024-11-19 06:31:59,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:31:59,136 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:59,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-19 06:31:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-19 06:31:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.65) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-19 06:31:59,173 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2024-11-19 06:31:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:59,173 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-19 06:31:59,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,174 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-19 06:31:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:31:59,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:59,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:31:59,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:31:59,175 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:31:59,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash 889512763, now seen corresponding path program 1 times [2024-11-19 06:31:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:59,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586279956] [2024-11-19 06:31:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:59,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:59,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:59,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586279956] [2024-11-19 06:31:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586279956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:59,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:59,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:31:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545895026] [2024-11-19 06:31:59,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:59,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:31:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:31:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:59,220 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:59,254 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-11-19 06:31:59,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:31:59,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-19 06:31:59,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:59,255 INFO L225 Difference]: With dead ends: 30 [2024-11-19 06:31:59,256 INFO L226 Difference]: Without dead ends: 29 [2024-11-19 06:31:59,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:59,257 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:59,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-19 06:31:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-19 06:31:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.631578947368421) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-19 06:31:59,266 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 6 [2024-11-19 06:31:59,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:59,266 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-19 06:31:59,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-19 06:31:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:31:59,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:59,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:59,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:31:59,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:31:59,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:59,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1805033068, now seen corresponding path program 1 times [2024-11-19 06:31:59,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:59,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376478644] [2024-11-19 06:31:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:59,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:59,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:59,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376478644] [2024-11-19 06:31:59,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376478644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:59,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:59,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:31:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150853138] [2024-11-19 06:31:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:59,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:31:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:31:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:59,424 INFO L87 Difference]: Start difference. First operand 28 states and 31 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) [2024-11-19 06:31:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:59,452 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-19 06:31:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:31:59,453 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 [2024-11-19 06:31:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:59,455 INFO L225 Difference]: With dead ends: 26 [2024-11-19 06:31:59,455 INFO L226 Difference]: Without dead ends: 26 [2024-11-19 06:31:59,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:59,457 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:59,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-19 06:31:59,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-19 06:31:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-19 06:31:59,464 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 7 [2024-11-19 06:31:59,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:59,464 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-19 06:31:59,465 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) [2024-11-19 06:31:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-19 06:31:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:31:59,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:59,467 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:59,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:31:59,468 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:31:59,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1805033069, now seen corresponding path program 1 times [2024-11-19 06:31:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159771678] [2024-11-19 06:31:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:59,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:59,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:59,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159771678] [2024-11-19 06:31:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159771678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:59,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:59,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:31:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803839730] [2024-11-19 06:31:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:59,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:31:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:31:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:31:59,867 INFO L87 Difference]: Start difference. First operand 26 states and 29 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) [2024-11-19 06:31:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:59,980 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-19 06:31:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:31:59,981 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 [2024-11-19 06:31:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:59,982 INFO L225 Difference]: With dead ends: 38 [2024-11-19 06:31:59,982 INFO L226 Difference]: Without dead ends: 38 [2024-11-19 06:31:59,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:31:59,984 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:59,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 76 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-19 06:31:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2024-11-19 06:31:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-19 06:31:59,993 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 7 [2024-11-19 06:31:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:59,993 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-19 06:31:59,993 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) [2024-11-19 06:31:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-19 06:31:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:31:59,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:59,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:59,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:31:59,994 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:31:59,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:59,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1805092651, now seen corresponding path program 1 times [2024-11-19 06:31:59,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:59,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206384252] [2024-11-19 06:31:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:00,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:00,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206384252] [2024-11-19 06:32:00,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206384252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:00,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:00,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:32:00,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067011776] [2024-11-19 06:32:00,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:00,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:32:00,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:00,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:32:00,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:00,183 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:00,254 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-19 06:32:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:00,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 06:32:00,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:00,256 INFO L225 Difference]: With dead ends: 33 [2024-11-19 06:32:00,256 INFO L226 Difference]: Without dead ends: 33 [2024-11-19 06:32:00,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:00,257 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:00,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-19 06:32:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-11-19 06:32:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-19 06:32:00,261 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 7 [2024-11-19 06:32:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:00,261 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-19 06:32:00,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-19 06:32:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:00,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:00,262 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:00,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:32:00,263 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:00,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1762265008, now seen corresponding path program 1 times [2024-11-19 06:32:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:00,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504657057] [2024-11-19 06:32:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:00,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504657057] [2024-11-19 06:32:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504657057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090304374] [2024-11-19 06:32:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:00,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:00,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:00,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:32:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:00,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 06:32:00,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:00,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:32:00,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090304374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:00,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:32:00,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 06:32:00,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339144832] [2024-11-19 06:32:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:00,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:00,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:00,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:00,478 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.2) 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) [2024-11-19 06:32:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:00,508 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-19 06:32:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:00,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) 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 [2024-11-19 06:32:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:00,510 INFO L225 Difference]: With dead ends: 36 [2024-11-19 06:32:00,510 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:32:00,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:00,513 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:00,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 61 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:32:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-19 06:32:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-19 06:32:00,517 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 11 [2024-11-19 06:32:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:00,517 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-19 06:32:00,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) 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) [2024-11-19 06:32:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-19 06:32:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:00,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:00,518 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:00,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:32:00,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 06:32:00,723 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:00,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash 952918382, now seen corresponding path program 1 times [2024-11-19 06:32:00,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:00,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685133582] [2024-11-19 06:32:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:00,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:00,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:00,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685133582] [2024-11-19 06:32:00,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685133582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:00,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065944218] [2024-11-19 06:32:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:00,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:00,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:00,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:00,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:32:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:00,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 06:32:00,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:00,910 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:32:00,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065944218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:00,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:32:00,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 06:32:00,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223837192] [2024-11-19 06:32:00,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:00,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:00,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:00,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:00,913 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) 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) [2024-11-19 06:32:00,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:00,947 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2024-11-19 06:32:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:00,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) 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 [2024-11-19 06:32:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:00,949 INFO L225 Difference]: With dead ends: 47 [2024-11-19 06:32:00,949 INFO L226 Difference]: Without dead ends: 47 [2024-11-19 06:32:00,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:00,951 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:00,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-19 06:32:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2024-11-19 06:32:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-19 06:32:00,957 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 11 [2024-11-19 06:32:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:00,957 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-19 06:32:00,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) 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) [2024-11-19 06:32:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-19 06:32:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:00,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:00,959 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:00,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:32:01,160 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,SelfDestructingSolverStorable6 [2024-11-19 06:32:01,160 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:01,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1632976752, now seen corresponding path program 1 times [2024-11-19 06:32:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298077725] [2024-11-19 06:32:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298077725] [2024-11-19 06:32:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298077725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:01,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690820701] [2024-11-19 06:32:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:01,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:01,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:01,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:32:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:01,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 06:32:01,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:01,526 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 [2024-11-19 06:32:01,535 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 [2024-11-19 06:32:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:01,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690820701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:01,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:01,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-19 06:32:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900587471] [2024-11-19 06:32:01,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:01,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 06:32:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 06:32:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:32:01,842 INFO L87 Difference]: Start difference. First operand 35 states and 39 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) [2024-11-19 06:32:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:01,994 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-19 06:32:01,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:32:01,995 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 [2024-11-19 06:32:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:01,995 INFO L225 Difference]: With dead ends: 36 [2024-11-19 06:32:01,995 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:32:01,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:32:01,996 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:01,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 88 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:32:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-19 06:32:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-19 06:32:02,000 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 11 [2024-11-19 06:32:02,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:02,000 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-19 06:32:02,000 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) [2024-11-19 06:32:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-19 06:32:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:32:02,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:02,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:02,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:02,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:02,206 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:02,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1204361265, now seen corresponding path program 1 times [2024-11-19 06:32:02,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:02,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431518891] [2024-11-19 06:32:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:02,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:02,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431518891] [2024-11-19 06:32:02,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431518891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795431905] [2024-11-19 06:32:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:02,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:02,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:02,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:32:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:02,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 06:32:02,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:02,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:02,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-19 06:32:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:02,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795431905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:02,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:02,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-19 06:32:02,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043269622] [2024-11-19 06:32:02,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:02,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:32:02,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:32:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:32:02,525 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:02,611 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-19 06:32:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:02,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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 12 [2024-11-19 06:32:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:02,612 INFO L225 Difference]: With dead ends: 41 [2024-11-19 06:32:02,613 INFO L226 Difference]: Without dead ends: 41 [2024-11-19 06:32:02,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:32:02,613 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:02,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-19 06:32:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-19 06:32:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-19 06:32:02,621 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 12 [2024-11-19 06:32:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:02,621 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-19 06:32:02,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-19 06:32:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:32:02,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:02,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:02,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:32:02,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:02,823 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:02,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:02,823 INFO L85 PathProgramCache]: Analyzing trace with hash -524302895, now seen corresponding path program 1 times [2024-11-19 06:32:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021607429] [2024-11-19 06:32:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:02,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021607429] [2024-11-19 06:32:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021607429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206770338] [2024-11-19 06:32:02,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:02,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:02,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:02,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:02,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:32:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:03,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:32:03,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:03,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:03,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-19 06:32:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:03,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206770338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:03,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:03,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-19 06:32:03,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248666617] [2024-11-19 06:32:03,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:03,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:32:03,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:32:03,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:32:03,197 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:03,305 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-19 06:32:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:03,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 06:32:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:03,306 INFO L225 Difference]: With dead ends: 44 [2024-11-19 06:32:03,306 INFO L226 Difference]: Without dead ends: 44 [2024-11-19 06:32:03,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:32:03,307 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:03,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 119 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-19 06:32:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-11-19 06:32:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-19 06:32:03,333 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2024-11-19 06:32:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:03,333 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-19 06:32:03,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-19 06:32:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:32:03,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:03,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:03,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:32:03,534 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,SelfDestructingSolverStorable9 [2024-11-19 06:32:03,535 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:03,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash -917329905, now seen corresponding path program 1 times [2024-11-19 06:32:03,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:03,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969581655] [2024-11-19 06:32:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:03,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:03,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969581655] [2024-11-19 06:32:03,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969581655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:03,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:03,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:32:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631052929] [2024-11-19 06:32:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:03,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:32:03,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:03,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:32:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:03,628 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:03,663 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-19 06:32:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 06:32:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:03,664 INFO L225 Difference]: With dead ends: 34 [2024-11-19 06:32:03,664 INFO L226 Difference]: Without dead ends: 34 [2024-11-19 06:32:03,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:03,665 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:03,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-19 06:32:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-19 06:32:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-19 06:32:03,668 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 12 [2024-11-19 06:32:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:03,668 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-19 06:32:03,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-19 06:32:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 06:32:03,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:03,669 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:03,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 06:32:03,669 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:03,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2044973646, now seen corresponding path program 1 times [2024-11-19 06:32:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:03,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207353773] [2024-11-19 06:32:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:03,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:03,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207353773] [2024-11-19 06:32:03,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207353773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:03,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:03,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804155187] [2024-11-19 06:32:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:03,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:03,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:03,714 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2024-11-19 06:32:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:03,737 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-19 06:32:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:03,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 [2024-11-19 06:32:03,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:03,739 INFO L225 Difference]: With dead ends: 31 [2024-11-19 06:32:03,739 INFO L226 Difference]: Without dead ends: 31 [2024-11-19 06:32:03,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:03,739 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:03,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-19 06:32:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-19 06:32:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-19 06:32:03,743 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 14 [2024-11-19 06:32:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:03,744 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-19 06:32:03,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2024-11-19 06:32:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-19 06:32:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 06:32:03,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:03,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:03,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:32:03,746 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:03,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2044973645, now seen corresponding path program 1 times [2024-11-19 06:32:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128360360] [2024-11-19 06:32:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128360360] [2024-11-19 06:32:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128360360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814226653] [2024-11-19 06:32:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:03,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:03,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:03,853 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:03,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:32:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:03,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 06:32:03,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:03,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:04,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-19 06:32:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:04,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814226653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:04,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:04,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-19 06:32:04,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216659806] [2024-11-19 06:32:04,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:04,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:32:04,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:32:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:32:04,046 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:04,121 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-19 06:32:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:04,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2024-11-19 06:32:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:04,122 INFO L225 Difference]: With dead ends: 42 [2024-11-19 06:32:04,122 INFO L226 Difference]: Without dead ends: 42 [2024-11-19 06:32:04,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:32:04,124 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:04,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 97 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-19 06:32:04,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-11-19 06:32:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-19 06:32:04,129 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2024-11-19 06:32:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:04,130 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-19 06:32:04,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-19 06:32:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 06:32:04,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:04,130 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:04,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:32:04,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:04,332 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:04,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1030326432, now seen corresponding path program 1 times [2024-11-19 06:32:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679912277] [2024-11-19 06:32:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:04,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:04,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679912277] [2024-11-19 06:32:04,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679912277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:04,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:04,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:04,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195258918] [2024-11-19 06:32:04,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:04,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:04,441 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:04,462 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-19 06:32:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:04,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-19 06:32:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:04,463 INFO L225 Difference]: With dead ends: 31 [2024-11-19 06:32:04,463 INFO L226 Difference]: Without dead ends: 31 [2024-11-19 06:32:04,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:04,464 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:04,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 33 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-19 06:32:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-19 06:32:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-19 06:32:04,466 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 15 [2024-11-19 06:32:04,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:04,466 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-19 06:32:04,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-19 06:32:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 06:32:04,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:04,472 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:04,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 06:32:04,473 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:04,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:04,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1030326433, now seen corresponding path program 1 times [2024-11-19 06:32:04,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:04,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313350923] [2024-11-19 06:32:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:04,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:04,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:04,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313350923] [2024-11-19 06:32:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313350923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:04,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:04,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735905241] [2024-11-19 06:32:04,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:04,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:04,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:04,665 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:04,699 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-19 06:32:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:04,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-19 06:32:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:04,701 INFO L225 Difference]: With dead ends: 45 [2024-11-19 06:32:04,701 INFO L226 Difference]: Without dead ends: 45 [2024-11-19 06:32:04,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:04,702 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:04,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-19 06:32:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-19 06:32:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-19 06:32:04,708 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 15 [2024-11-19 06:32:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:04,708 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-19 06:32:04,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-19 06:32:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 06:32:04,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:04,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:04,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 06:32:04,709 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:04,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:04,709 INFO L85 PathProgramCache]: Analyzing trace with hash 443520419, now seen corresponding path program 1 times [2024-11-19 06:32:04,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:04,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677452228] [2024-11-19 06:32:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:04,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:04,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:04,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677452228] [2024-11-19 06:32:04,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677452228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:04,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:04,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:32:04,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440628444] [2024-11-19 06:32:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:04,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:32:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:32:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:04,848 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:04,883 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-11-19 06:32:04,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:04,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-19 06:32:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:04,884 INFO L225 Difference]: With dead ends: 46 [2024-11-19 06:32:04,884 INFO L226 Difference]: Without dead ends: 46 [2024-11-19 06:32:04,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:04,885 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:04,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 46 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-19 06:32:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2024-11-19 06:32:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-19 06:32:04,892 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2024-11-19 06:32:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:04,892 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-19 06:32:04,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-19 06:32:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:32:04,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:04,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:04,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 06:32:04,893 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:04,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1676503922, now seen corresponding path program 1 times [2024-11-19 06:32:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720095465] [2024-11-19 06:32:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:05,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:05,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720095465] [2024-11-19 06:32:05,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720095465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:05,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:05,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:32:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673922375] [2024-11-19 06:32:05,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:05,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:32:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:32:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:05,051 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:05,096 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-11-19 06:32:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:32:05,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 06:32:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:05,097 INFO L225 Difference]: With dead ends: 46 [2024-11-19 06:32:05,097 INFO L226 Difference]: Without dead ends: 46 [2024-11-19 06:32:05,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:05,098 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:05,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-19 06:32:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-11-19 06:32:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.170731707317073) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-11-19 06:32:05,101 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 18 [2024-11-19 06:32:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:05,102 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-11-19 06:32:05,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-11-19 06:32:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:32:05,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:05,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:05,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 06:32:05,104 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:05,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1338599696, now seen corresponding path program 1 times [2024-11-19 06:32:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:05,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689147993] [2024-11-19 06:32:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:05,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:05,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689147993] [2024-11-19 06:32:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689147993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:05,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:32:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216837578] [2024-11-19 06:32:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:05,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:32:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:32:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:05,287 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:05,347 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2024-11-19 06:32:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 06:32:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:05,348 INFO L225 Difference]: With dead ends: 64 [2024-11-19 06:32:05,348 INFO L226 Difference]: Without dead ends: 64 [2024-11-19 06:32:05,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:32:05,349 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:05,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:05,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-19 06:32:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2024-11-19 06:32:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-19 06:32:05,351 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 18 [2024-11-19 06:32:05,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:05,351 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-19 06:32:05,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-19 06:32:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:32:05,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:05,352 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:05,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 06:32:05,352 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:05,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash 317531342, now seen corresponding path program 1 times [2024-11-19 06:32:05,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639844110] [2024-11-19 06:32:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:05,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:05,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639844110] [2024-11-19 06:32:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639844110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:05,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793814015] [2024-11-19 06:32:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:05,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:05,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:05,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:05,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:32:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:05,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 06:32:05,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:05,659 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 [2024-11-19 06:32:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:05,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:05,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-19 06:32:05,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 06:32:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793814015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:05,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:05,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-19 06:32:05,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877432054] [2024-11-19 06:32:05,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:05,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 06:32:05,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:05,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 06:32:05,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:32:05,745 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:05,903 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2024-11-19 06:32:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:32:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 06:32:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:05,904 INFO L225 Difference]: With dead ends: 59 [2024-11-19 06:32:05,904 INFO L226 Difference]: Without dead ends: 59 [2024-11-19 06:32:05,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:32:05,904 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 34 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:05,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 127 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-19 06:32:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2024-11-19 06:32:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.205128205128205) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-19 06:32:05,906 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 18 [2024-11-19 06:32:05,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:05,907 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-19 06:32:05,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-19 06:32:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:32:05,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:05,910 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:05,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 06:32:06,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:06,111 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:06,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash -432069207, now seen corresponding path program 1 times [2024-11-19 06:32:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:06,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081217997] [2024-11-19 06:32:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081217997] [2024-11-19 06:32:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081217997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:06,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:06,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821168013] [2024-11-19 06:32:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:06,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:06,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:06,216 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:06,231 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-19 06:32:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:06,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-19 06:32:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:06,232 INFO L225 Difference]: With dead ends: 41 [2024-11-19 06:32:06,232 INFO L226 Difference]: Without dead ends: 25 [2024-11-19 06:32:06,232 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 [2024-11-19 06:32:06,233 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 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 [2024-11-19 06:32:06,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-19 06:32:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-19 06:32:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-19 06:32:06,234 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2024-11-19 06:32:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:06,234 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-19 06:32:06,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-19 06:32:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:32:06,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:06,235 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:06,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 06:32:06,236 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:06,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 329925547, now seen corresponding path program 2 times [2024-11-19 06:32:06,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:06,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755624925] [2024-11-19 06:32:06,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:06,250 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:06,251 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:06,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:06,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755624925] [2024-11-19 06:32:06,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755624925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:06,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857929334] [2024-11-19 06:32:06,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:06,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:06,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:06,437 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:06,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:32:06,514 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:06,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:06,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 06:32:06,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:06,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:32:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:06,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857929334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:06,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:06,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-19 06:32:06,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33912140] [2024-11-19 06:32:06,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:06,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:32:06,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:06,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:32:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:32:06,851 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:06,979 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2024-11-19 06:32:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:32:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 06:32:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:06,980 INFO L225 Difference]: With dead ends: 33 [2024-11-19 06:32:06,980 INFO L226 Difference]: Without dead ends: 33 [2024-11-19 06:32:06,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:32:06,981 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:06,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 65 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-19 06:32:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-11-19 06:32:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:06,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-19 06:32:06,983 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2024-11-19 06:32:06,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:06,983 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-19 06:32:06,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-19 06:32:06,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 06:32:06,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:06,984 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:07,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 06:32:07,189 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,SelfDestructingSolverStorable20 [2024-11-19 06:32:07,190 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:07,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1637757353, now seen corresponding path program 1 times [2024-11-19 06:32:07,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:07,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152461994] [2024-11-19 06:32:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:07,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:07,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152461994] [2024-11-19 06:32:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152461994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509510612] [2024-11-19 06:32:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:07,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:07,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:07,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:07,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:32:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:07,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-19 06:32:07,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:07,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:07,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:07,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:07,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:08,186 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509510612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:08,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 21 [2024-11-19 06:32:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204925076] [2024-11-19 06:32:08,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:08,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 06:32:08,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:08,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 06:32:08,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:32:08,227 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 22 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) [2024-11-19 06:32:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:08,434 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-11-19 06:32:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:32:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-19 06:32:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:08,436 INFO L225 Difference]: With dead ends: 31 [2024-11-19 06:32:08,437 INFO L226 Difference]: Without dead ends: 31 [2024-11-19 06:32:08,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-19 06:32:08,438 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:08,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 86 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-19 06:32:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-19 06:32:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 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) [2024-11-19 06:32:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2024-11-19 06:32:08,439 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2024-11-19 06:32:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:08,439 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2024-11-19 06:32:08,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 22 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) [2024-11-19 06:32:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2024-11-19 06:32:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:32:08,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:08,440 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:08,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:32:08,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:08,644 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:08,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash -399184250, now seen corresponding path program 3 times [2024-11-19 06:32:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232834675] [2024-11-19 06:32:08,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:08,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:08,661 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:32:08,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232834675] [2024-11-19 06:32:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232834675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298017032] [2024-11-19 06:32:09,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:09,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:09,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:09,092 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:09,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:32:09,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:32:09,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:09,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 06:32:09,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:09,259 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 [2024-11-19 06:32:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:09,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:09,303 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 [2024-11-19 06:32:09,309 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 [2024-11-19 06:32:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298017032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:09,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 21 [2024-11-19 06:32:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195053450] [2024-11-19 06:32:09,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:09,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:32:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:32:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:32:09,366 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:09,610 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-19 06:32:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:32:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-19 06:32:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:09,611 INFO L225 Difference]: With dead ends: 46 [2024-11-19 06:32:09,611 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 06:32:09,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:32:09,613 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:09,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 106 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 06:32:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-19 06:32:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 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) [2024-11-19 06:32:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-19 06:32:09,614 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2024-11-19 06:32:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:09,615 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-19 06:32:09,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-19 06:32:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 06:32:09,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:09,616 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:09,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 06:32:09,819 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,SelfDestructingSolverStorable22 [2024-11-19 06:32:09,820 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:09,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash -536354717, now seen corresponding path program 4 times [2024-11-19 06:32:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:09,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773155135] [2024-11-19 06:32:09,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:09,841 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:09,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773155135] [2024-11-19 06:32:10,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773155135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:10,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525176687] [2024-11-19 06:32:10,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:10,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:10,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:10,437 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:10,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:32:10,519 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:10,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:10,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 06:32:10,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:10,616 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 [2024-11-19 06:32:10,992 INFO L349 Elim1Store]: treesize reduction 4, result has 82.6 percent of original size [2024-11-19 06:32:10,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 29 [2024-11-19 06:32:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:32:11,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:11,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 06:32:11,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2024-11-19 06:32:11,684 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 [2024-11-19 06:32:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:32:11,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525176687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:11,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2024-11-19 06:32:11,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948151788] [2024-11-19 06:32:11,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:11,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-19 06:32:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-19 06:32:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 06:32:11,700 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:12,273 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-19 06:32:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:32:12,273 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-19 06:32:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:12,274 INFO L225 Difference]: With dead ends: 34 [2024-11-19 06:32:12,274 INFO L226 Difference]: Without dead ends: 34 [2024-11-19 06:32:12,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 06:32:12,275 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:12,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 91 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-19 06:32:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-19 06:32:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-19 06:32:12,277 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2024-11-19 06:32:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:12,277 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-19 06:32:12,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-19 06:32:12,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:32:12,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:12,278 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:12,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:12,482 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,SelfDestructingSolverStorable23 [2024-11-19 06:32:12,483 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:12,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash 552872945, now seen corresponding path program 2 times [2024-11-19 06:32:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:12,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028869873] [2024-11-19 06:32:12,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:12,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:12,510 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:12,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028869873] [2024-11-19 06:32:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028869873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162783653] [2024-11-19 06:32:12,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:12,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:12,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:12,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:12,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:32:12,948 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:12,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:12,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-19 06:32:12,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:12,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:12,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:13,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:14,009 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:14,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162783653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:14,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:14,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 31 [2024-11-19 06:32:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805773240] [2024-11-19 06:32:14,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:14,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 06:32:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 06:32:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-11-19 06:32:14,053 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:14,435 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-19 06:32:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 06:32:14,436 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-19 06:32:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:14,436 INFO L225 Difference]: With dead ends: 45 [2024-11-19 06:32:14,436 INFO L226 Difference]: Without dead ends: 45 [2024-11-19 06:32:14,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 06:32:14,438 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:14,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 118 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-19 06:32:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2024-11-19 06:32:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-19 06:32:14,440 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 31 [2024-11-19 06:32:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:14,440 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-19 06:32:14,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-19 06:32:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 06:32:14,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:14,441 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:14,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 06:32:14,641 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,SelfDestructingSolverStorable24 [2024-11-19 06:32:14,642 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:14,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:14,642 INFO L85 PathProgramCache]: Analyzing trace with hash -232228746, now seen corresponding path program 3 times [2024-11-19 06:32:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:14,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26167844] [2024-11-19 06:32:14,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:14,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:14,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 06:32:14,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26167844] [2024-11-19 06:32:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26167844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968851493] [2024-11-19 06:32:15,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:15,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:15,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:15,084 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:15,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:32:15,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 06:32:15,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:15,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 06:32:15,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:15,302 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 [2024-11-19 06:32:15,389 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 7 treesize of output 3 [2024-11-19 06:32:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:15,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:15,436 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 [2024-11-19 06:32:15,438 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 [2024-11-19 06:32:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:15,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968851493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:15,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:15,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-19 06:32:15,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744199906] [2024-11-19 06:32:15,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:15,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 06:32:15,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:15,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 06:32:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2024-11-19 06:32:15,512 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 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) [2024-11-19 06:32:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:15,998 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2024-11-19 06:32:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:32:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 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) Word has length 35 [2024-11-19 06:32:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:15,999 INFO L225 Difference]: With dead ends: 57 [2024-11-19 06:32:15,999 INFO L226 Difference]: Without dead ends: 43 [2024-11-19 06:32:16,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 06:32:16,000 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:16,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 173 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-19 06:32:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-19 06:32:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-19 06:32:16,002 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2024-11-19 06:32:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:16,002 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-19 06:32:16,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 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) [2024-11-19 06:32:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-19 06:32:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:32:16,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:16,003 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:16,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 06:32:16,207 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,SelfDestructingSolverStorable25 [2024-11-19 06:32:16,208 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:16,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1384427719, now seen corresponding path program 4 times [2024-11-19 06:32:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:16,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873520657] [2024-11-19 06:32:16,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:16,233 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:16,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:17,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873520657] [2024-11-19 06:32:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873520657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764530933] [2024-11-19 06:32:17,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:17,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:17,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:17,039 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:17,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:32:17,142 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:17,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:17,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-19 06:32:17,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:17,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:17,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:32:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:17,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:18,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764530933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:18,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:18,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 41 [2024-11-19 06:32:18,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48118756] [2024-11-19 06:32:18,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:18,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-19 06:32:18,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:18,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-19 06:32:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 06:32:18,556 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 42 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:19,522 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2024-11-19 06:32:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:32:19,523 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-19 06:32:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:19,523 INFO L225 Difference]: With dead ends: 47 [2024-11-19 06:32:19,523 INFO L226 Difference]: Without dead ends: 47 [2024-11-19 06:32:19,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=359, Invalid=2503, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 06:32:19,525 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:19,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 242 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:32:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-19 06:32:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2024-11-19 06:32:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2024-11-19 06:32:19,527 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 39 [2024-11-19 06:32:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:19,527 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2024-11-19 06:32:19,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2024-11-19 06:32:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 06:32:19,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:19,528 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:19,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 06:32:19,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:19,733 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:19,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash -732121154, now seen corresponding path program 5 times [2024-11-19 06:32:19,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:19,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862019309] [2024-11-19 06:32:19,734 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:32:19,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:19,764 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 06:32:19,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:20,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862019309] [2024-11-19 06:32:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862019309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251322767] [2024-11-19 06:32:20,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:32:20,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:20,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:20,210 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:20,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:32:20,324 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 06:32:20,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:20,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-19 06:32:20,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:20,480 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 [2024-11-19 06:32:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:20,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:20,667 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 [2024-11-19 06:32:20,669 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 [2024-11-19 06:32:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:20,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251322767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:20,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:20,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 31 [2024-11-19 06:32:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182784263] [2024-11-19 06:32:20,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:20,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 06:32:20,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 06:32:20,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2024-11-19 06:32:20,760 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 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) [2024-11-19 06:32:21,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:21,408 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2024-11-19 06:32:21,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 06:32:21,409 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 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) Word has length 43 [2024-11-19 06:32:21,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:21,409 INFO L225 Difference]: With dead ends: 69 [2024-11-19 06:32:21,409 INFO L226 Difference]: Without dead ends: 51 [2024-11-19 06:32:21,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 06:32:21,410 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:21,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 241 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-19 06:32:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-19 06:32:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-19 06:32:21,412 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 43 [2024-11-19 06:32:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:21,412 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-19 06:32:21,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 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) [2024-11-19 06:32:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-19 06:32:21,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 06:32:21,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:21,413 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:21,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:21,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 06:32:21,614 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:21,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1117395841, now seen corresponding path program 6 times [2024-11-19 06:32:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:21,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665587362] [2024-11-19 06:32:21,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:32:21,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:21,641 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-19 06:32:21,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665587362] [2024-11-19 06:32:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665587362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906488549] [2024-11-19 06:32:22,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:32:22,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:22,391 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) [2024-11-19 06:32:22,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 06:32:22,524 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-19 06:32:22,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:22,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-19 06:32:22,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:22,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:22,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:23,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:24,179 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906488549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:24,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:24,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 46 [2024-11-19 06:32:24,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033830604] [2024-11-19 06:32:24,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:24,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-19 06:32:24,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:24,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-19 06:32:24,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1925, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 06:32:24,234 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 47 states, 46 states have (on average 3.0217391304347827) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:25,127 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-11-19 06:32:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 06:32:25,128 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.0217391304347827) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-19 06:32:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:25,128 INFO L225 Difference]: With dead ends: 61 [2024-11-19 06:32:25,128 INFO L226 Difference]: Without dead ends: 61 [2024-11-19 06:32:25,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=420, Invalid=3362, Unknown=0, NotChecked=0, Total=3782 [2024-11-19 06:32:25,130 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:25,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 232 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-19 06:32:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2024-11-19 06:32:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-19 06:32:25,134 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 47 [2024-11-19 06:32:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:25,134 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-19 06:32:25,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.0217391304347827) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-19 06:32:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 06:32:25,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:25,135 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:25,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:25,336 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,SelfDestructingSolverStorable28 [2024-11-19 06:32:25,336 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:25,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -382984186, now seen corresponding path program 7 times [2024-11-19 06:32:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:25,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659315506] [2024-11-19 06:32:25,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:32:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:25,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:25,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659315506] [2024-11-19 06:32:25,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659315506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:25,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039432120] [2024-11-19 06:32:25,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:32:25,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:25,921 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) [2024-11-19 06:32:25,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 06:32:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:26,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 06:32:26,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:26,218 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 [2024-11-19 06:32:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:26,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:26,418 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 [2024-11-19 06:32:26,420 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 [2024-11-19 06:32:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039432120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:26,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-11-19 06:32:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288878053] [2024-11-19 06:32:26,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:26,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 06:32:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 06:32:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 06:32:26,508 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 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) [2024-11-19 06:32:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:27,162 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2024-11-19 06:32:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 06:32:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 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) Word has length 51 [2024-11-19 06:32:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:27,163 INFO L225 Difference]: With dead ends: 81 [2024-11-19 06:32:27,163 INFO L226 Difference]: Without dead ends: 59 [2024-11-19 06:32:27,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=221, Invalid=2431, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 06:32:27,164 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:27,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 287 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:27,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-19 06:32:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2024-11-19 06:32:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 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) [2024-11-19 06:32:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-11-19 06:32:27,165 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 51 [2024-11-19 06:32:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:27,166 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-11-19 06:32:27,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 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) [2024-11-19 06:32:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-11-19 06:32:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:32:27,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:27,167 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:27,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 06:32:27,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:27,371 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:27,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash 829886665, now seen corresponding path program 8 times [2024-11-19 06:32:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:27,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053030194] [2024-11-19 06:32:27,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:27,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:27,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:27,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:27,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053030194] [2024-11-19 06:32:27,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053030194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:27,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552429226] [2024-11-19 06:32:27,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:27,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:27,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:27,968 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) [2024-11-19 06:32:27,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 06:32:28,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:28,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:28,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-19 06:32:28,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:28,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:28,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:28,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:29,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:29,755 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:29,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552429226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:29,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:29,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 48 [2024-11-19 06:32:29,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601618587] [2024-11-19 06:32:29,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:29,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 06:32:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 06:32:29,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 06:32:29,798 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 49 states, 48 states have (on average 3.3958333333333335) internal successors, (163), 49 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:30,471 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-11-19 06:32:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 06:32:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 3.3958333333333335) internal successors, (163), 49 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-19 06:32:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:30,472 INFO L225 Difference]: With dead ends: 69 [2024-11-19 06:32:30,472 INFO L226 Difference]: Without dead ends: 69 [2024-11-19 06:32:30,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=312, Invalid=2768, Unknown=0, NotChecked=0, Total=3080 [2024-11-19 06:32:30,473 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:30,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 368 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:32:30,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-19 06:32:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2024-11-19 06:32:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-19 06:32:30,475 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 55 [2024-11-19 06:32:30,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:30,475 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-19 06:32:30,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.3958333333333335) internal successors, (163), 49 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-19 06:32:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 06:32:30,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:30,476 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:30,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:30,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:30,681 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:30,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1971506866, now seen corresponding path program 9 times [2024-11-19 06:32:30,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:30,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296189867] [2024-11-19 06:32:30,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:30,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:30,710 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 06:32:30,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 66 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:31,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296189867] [2024-11-19 06:32:31,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296189867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256834459] [2024-11-19 06:32:31,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:31,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:31,319 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) [2024-11-19 06:32:31,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 06:32:31,510 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 06:32:31,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:31,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-19 06:32:31,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:31,735 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 [2024-11-19 06:32:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 17 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:31,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:32,229 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 [2024-11-19 06:32:32,230 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 [2024-11-19 06:32:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 17 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:32,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256834459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:32,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:32,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 53 [2024-11-19 06:32:32,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190034303] [2024-11-19 06:32:32,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:32,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-19 06:32:32,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:32,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-19 06:32:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 06:32:32,535 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 53 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:33,667 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2024-11-19 06:32:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 06:32:33,667 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 53 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-19 06:32:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:33,668 INFO L225 Difference]: With dead ends: 93 [2024-11-19 06:32:33,668 INFO L226 Difference]: Without dead ends: 67 [2024-11-19 06:32:33,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=358, Invalid=5192, Unknown=0, NotChecked=0, Total=5550 [2024-11-19 06:32:33,670 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:33,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 485 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:32:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-19 06:32:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2024-11-19 06:32:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-11-19 06:32:33,672 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 59 [2024-11-19 06:32:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:33,672 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-11-19 06:32:33,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 53 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-11-19 06:32:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 06:32:33,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:33,673 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:33,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:33,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:33,878 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:33,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:33,878 INFO L85 PathProgramCache]: Analyzing trace with hash 16297745, now seen corresponding path program 10 times [2024-11-19 06:32:33,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:33,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569191739] [2024-11-19 06:32:33,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:33,914 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:33,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 66 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:34,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569191739] [2024-11-19 06:32:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569191739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072245992] [2024-11-19 06:32:34,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:34,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:34,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:34,630 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:34,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 06:32:34,791 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:34,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:34,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-19 06:32:34,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:34,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:34,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:34,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 66 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:35,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:36,462 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 91 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:36,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072245992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:36,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:36,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 52 [2024-11-19 06:32:36,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329364755] [2024-11-19 06:32:36,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:36,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-19 06:32:36,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-19 06:32:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 06:32:36,541 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 53 states, 52 states have (on average 3.5961538461538463) internal successors, (187), 53 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:37,398 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2024-11-19 06:32:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:32:37,398 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.5961538461538463) internal successors, (187), 53 states have internal predecessors, (187), 0 states have call successors, (0), 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 63 [2024-11-19 06:32:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:37,399 INFO L225 Difference]: With dead ends: 70 [2024-11-19 06:32:37,399 INFO L226 Difference]: Without dead ends: 70 [2024-11-19 06:32:37,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=486, Invalid=3420, Unknown=0, NotChecked=0, Total=3906 [2024-11-19 06:32:37,401 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:37,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 387 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:32:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-19 06:32:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-19 06:32:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 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) [2024-11-19 06:32:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2024-11-19 06:32:37,405 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 63 [2024-11-19 06:32:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:37,405 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2024-11-19 06:32:37,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.5961538461538463) internal successors, (187), 53 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2024-11-19 06:32:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 06:32:37,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:37,406 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:37,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:37,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-19 06:32:37,607 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:37,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1744202646, now seen corresponding path program 11 times [2024-11-19 06:32:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398942994] [2024-11-19 06:32:37,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:32:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:37,635 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-19 06:32:37,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:38,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:38,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398942994] [2024-11-19 06:32:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398942994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:38,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675658349] [2024-11-19 06:32:38,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:32:38,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:38,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:38,371 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:38,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 06:32:38,657 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-19 06:32:38,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:38,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-19 06:32:38,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:38,923 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 [2024-11-19 06:32:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 20 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:39,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:39,228 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 [2024-11-19 06:32:39,230 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 [2024-11-19 06:32:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 20 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675658349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:39,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:39,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 44 [2024-11-19 06:32:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699677072] [2024-11-19 06:32:39,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:39,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 06:32:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:39,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 06:32:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 06:32:39,329 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 44 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:40,385 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2024-11-19 06:32:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 06:32:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 44 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-19 06:32:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:40,385 INFO L225 Difference]: With dead ends: 105 [2024-11-19 06:32:40,386 INFO L226 Difference]: Without dead ends: 75 [2024-11-19 06:32:40,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=353, Invalid=4477, Unknown=0, NotChecked=0, Total=4830 [2024-11-19 06:32:40,387 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:40,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 498 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:32:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-19 06:32:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-19 06:32:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 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) [2024-11-19 06:32:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-19 06:32:40,389 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 67 [2024-11-19 06:32:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:40,389 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-19 06:32:40,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 44 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-19 06:32:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 06:32:40,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:40,390 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:40,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:40,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-19 06:32:40,590 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-19 06:32:40,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1916438951, now seen corresponding path program 12 times [2024-11-19 06:32:40,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:40,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065953215] [2024-11-19 06:32:40,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:32:40,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:40,623 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-19 06:32:40,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 88 proven. 32 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-19 06:32:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065953215] [2024-11-19 06:32:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065953215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552556805] [2024-11-19 06:32:41,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:32:41,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:41,381 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:41,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 06:32:41,729 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-19 06:32:41,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:41,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-19 06:32:41,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:41,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:41,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:41,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:42,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:43,619 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552556805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:43,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:43,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 22] total 53 [2024-11-19 06:32:43,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787687786] [2024-11-19 06:32:43,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:43,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-19 06:32:43,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:43,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-19 06:32:43,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=2584, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 06:32:43,662 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 54 states, 53 states have (on average 3.2830188679245285) internal successors, (174), 54 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:45,284 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2024-11-19 06:32:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 06:32:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.2830188679245285) internal successors, (174), 54 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-19 06:32:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:45,284 INFO L225 Difference]: With dead ends: 84 [2024-11-19 06:32:45,284 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 06:32:45,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=668, Invalid=5974, Unknown=0, NotChecked=0, Total=6642 [2024-11-19 06:32:45,286 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:45,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 445 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:32:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 06:32:45,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 06:32:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 06:32:45,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-11-19 06:32:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:45,288 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 06:32:45,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.2830188679245285) internal successors, (174), 54 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 06:32:45,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 06:32:45,291 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-19 06:32:45,291 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-19 06:32:45,291 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-19 06:32:45,291 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-19 06:32:45,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-19 06:32:45,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-19 06:32:45,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-19 06:32:45,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-19 06:32:45,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-19 06:32:45,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:45,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:45,495 INFO L407 BasicCegarLoop]: Path program histogram: [12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:45,497 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 06:32:45,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:32:45 BoogieIcfgContainer [2024-11-19 06:32:45,500 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 06:32:45,502 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 06:32:45,502 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 06:32:45,502 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 06:32:45,502 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:58" (3/4) ... [2024-11-19 06:32:45,504 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 06:32:45,514 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-19 06:32:45,515 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 06:32:45,515 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 06:32:45,515 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 06:32:45,598 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 06:32:45,598 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 06:32:45,598 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 06:32:45,599 INFO L158 Benchmark]: Toolchain (without parser) took 47888.05ms. Allocated memory was 159.4MB in the beginning and 339.7MB in the end (delta: 180.4MB). Free memory was 106.1MB in the beginning and 207.6MB in the end (delta: -101.5MB). Peak memory consumption was 79.9MB. Max. memory is 16.1GB. [2024-11-19 06:32:45,599 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 06:32:45,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.18ms. Allocated memory is still 159.4MB. Free memory was 106.1MB in the beginning and 122.9MB in the end (delta: -16.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 06:32:45,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.69ms. Allocated memory is still 159.4MB. Free memory was 122.9MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 06:32:45,600 INFO L158 Benchmark]: Boogie Preprocessor took 39.40ms. Allocated memory is still 159.4MB. Free memory was 120.7MB in the beginning and 118.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 06:32:45,600 INFO L158 Benchmark]: RCFGBuilder took 419.64ms. Allocated memory is still 159.4MB. Free memory was 118.7MB in the beginning and 104.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 06:32:45,600 INFO L158 Benchmark]: TraceAbstraction took 46777.99ms. Allocated memory was 159.4MB in the beginning and 339.7MB in the end (delta: 180.4MB). Free memory was 104.0MB in the beginning and 212.9MB in the end (delta: -108.9MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2024-11-19 06:32:45,600 INFO L158 Benchmark]: Witness Printer took 96.82ms. Allocated memory is still 339.7MB. Free memory was 212.9MB in the beginning and 207.6MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 06:32:45,601 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.18ms. Allocated memory is still 159.4MB. Free memory was 106.1MB in the beginning and 122.9MB in the end (delta: -16.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.69ms. Allocated memory is still 159.4MB. Free memory was 122.9MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.40ms. Allocated memory is still 159.4MB. Free memory was 120.7MB in the beginning and 118.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 419.64ms. Allocated memory is still 159.4MB. Free memory was 118.7MB in the beginning and 104.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 46777.99ms. Allocated memory was 159.4MB in the beginning and 339.7MB in the end (delta: 180.4MB). Free memory was 104.0MB in the beginning and 212.9MB in the end (delta: -108.9MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. * Witness Printer took 96.82ms. Allocated memory is still 339.7MB. Free memory was 212.9MB in the beginning and 207.6MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: 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, 30 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 46.7s, OverallIterations: 35, TraceHistogramMax: 8, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 600 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 600 mSDsluCounter, 5166 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4543 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11555 IncrementalHoareTripleChecker+Invalid, 11738 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 623 mSDtfsCounter, 11555 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1977 GetRequests, 1126 SyntacticMatches, 8 SemanticMatches, 843 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9010 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=34, InterpolantAutomatonStates: 416, 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, 35 MinimizatonAttempts, 174 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 1661 NumberOfCodeBlocks, 1651 NumberOfCodeBlocksAsserted, 137 NumberOfCheckSat, 2313 ConstructedInterpolants, 17 QuantifiedInterpolants, 31274 SizeOfPredicates, 121 NumberOfNonLiveVariables, 3901 ConjunctsInSsa, 799 ConjunctsInUnsatCore, 77 InterpolantComputations, 15 PerfectInterpolantSequences, 931/3657 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 06:32:45,628 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