./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.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_cstrspn-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e27d2e3e94b55a3b3138a7f2b03714931363cb725f69630c5958681cf34de99e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:32:42,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:32:42,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:32:42,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:32:42,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:32:42,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:32:42,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:32:42,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:32:42,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:32:42,905 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:32:42,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:32:42,906 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:32:42,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:32:42,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:32:42,908 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:32:42,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:32:42,909 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:32:42,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:32:42,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:32:42,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:32:42,910 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:32:42,910 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:32:42,913 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:32:42,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:32:42,913 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:32:42,913 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:32:42,914 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:32:42,914 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:32:42,914 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:32:42,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:32:42,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:32:42,915 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:32:42,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:32:42,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:32:42,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:32:42,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:32:42,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:32:42,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:32:42,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:32:42,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:32:42,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:32:42,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:32:42,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e27d2e3e94b55a3b3138a7f2b03714931363cb725f69630c5958681cf34de99e [2024-11-19 06:32:43,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:32:43,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:32:43,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:32:43,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:32:43,186 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:32:43,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2024-11-19 06:32:44,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:32:44,676 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:32:44,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2024-11-19 06:32:44,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/993f62e01/de702fc2cfa34a05a9ad014fbc8a034d/FLAG543ec7941 [2024-11-19 06:32:45,031 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/993f62e01/de702fc2cfa34a05a9ad014fbc8a034d [2024-11-19 06:32:45,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:32:45,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:32:45,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:32:45,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:32:45,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:32:45,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5f8be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45, skipping insertion in model container [2024-11-19 06:32:45,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:32:45,340 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 06:32:45,341 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 06:32:45,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:32:45,358 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:32:45,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:32:45,422 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:32:45,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45 WrapperNode [2024-11-19 06:32:45,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:32:45,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:32:45,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:32:45,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:32:45,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,457 INFO L138 Inliner]: procedures = 117, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2024-11-19 06:32:45,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:32:45,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:32:45,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:32:45,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:32:45,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,469 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,492 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [3, 3]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-19 06:32:45,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,501 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:32:45,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:32:45,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:32:45,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:32:45,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (1/1) ... [2024-11-19 06:32:45,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:32:45,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:45,546 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 06:32:45,548 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 06:32:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:32:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:32:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:32:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:32:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:32:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:32:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:32:45,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:32:45,660 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:32:45,662 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:32:45,832 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-19 06:32:45,833 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:32:45,844 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:32:45,844 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 06:32:45,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:32:45 BoogieIcfgContainer [2024-11-19 06:32:45,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:32:45,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:32:45,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:32:45,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:32:45,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:32:45" (1/3) ... [2024-11-19 06:32:45,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de4a694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:32:45, skipping insertion in model container [2024-11-19 06:32:45,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:45" (2/3) ... [2024-11-19 06:32:45,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de4a694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:32:45, skipping insertion in model container [2024-11-19 06:32:45,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:32:45" (3/3) ... [2024-11-19 06:32:45,855 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrspn-alloca-2.i [2024-11-19 06:32:45,871 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:32:45,871 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-19 06:32:45,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:32:45,913 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;@6f1bf819, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:32:45,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-19 06:32:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:32:45,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:45,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:45,925 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:45,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-19 06:32:45,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:45,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383516779] [2024-11-19 06:32:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:46,151 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 06:32:46,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383516779] [2024-11-19 06:32:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383516779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:46,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:46,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:46,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027683285] [2024-11-19 06:32:46,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:46,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:46,182 INFO L87 Difference]: Start difference. First operand has 44 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:46,219 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-11-19 06:32:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:46,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 06:32:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:46,226 INFO L225 Difference]: With dead ends: 57 [2024-11-19 06:32:46,226 INFO L226 Difference]: Without dead ends: 55 [2024-11-19 06:32:46,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:46,229 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 96 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 06:32:46,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 96 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-19 06:32:46,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2024-11-19 06:32:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.59375) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-11-19 06:32:46,264 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 7 [2024-11-19 06:32:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:46,264 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-11-19 06:32:46,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-11-19 06:32:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:32:46,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:46,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:46,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:32:46,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:46,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2024-11-19 06:32:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:46,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336392196] [2024-11-19 06:32:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:46,646 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 06:32:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336392196] [2024-11-19 06:32:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336392196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:46,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:46,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775130202] [2024-11-19 06:32:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:46,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:46,649 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:46,722 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2024-11-19 06:32:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 06:32:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:46,724 INFO L225 Difference]: With dead ends: 63 [2024-11-19 06:32:46,724 INFO L226 Difference]: Without dead ends: 63 [2024-11-19 06:32:46,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:46,726 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:46,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 76 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-19 06:32:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2024-11-19 06:32:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.53125) internal successors, (49), 42 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 06:32:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-19 06:32:46,734 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2024-11-19 06:32:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:46,734 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-19 06:32:46,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-19 06:32:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:32:46,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:46,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:46,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:32:46,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:46,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2024-11-19 06:32:46,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:46,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621555204] [2024-11-19 06:32:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:46,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:46,884 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 06:32:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621555204] [2024-11-19 06:32:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621555204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751713817] [2024-11-19 06:32:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:46,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:46,886 INFO L87 Difference]: Start difference. First operand 43 states and 49 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 06:32:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:46,963 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-19 06:32:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:46,964 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 06:32:46,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:46,965 INFO L225 Difference]: With dead ends: 47 [2024-11-19 06:32:46,966 INFO L226 Difference]: Without dead ends: 47 [2024-11-19 06:32:46,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:46,967 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:46,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 106 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-19 06:32:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-11-19 06:32:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-19 06:32:46,975 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 7 [2024-11-19 06:32:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:46,975 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-19 06:32:46,975 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 06:32:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-19 06:32:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:32:46,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:46,976 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:46,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:32:46,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:46,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:46,979 INFO L85 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2024-11-19 06:32:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:46,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271613164] [2024-11-19 06:32:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:46,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:47,020 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 06:32:47,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:47,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271613164] [2024-11-19 06:32:47,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271613164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:47,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:47,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226485700] [2024-11-19 06:32:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:47,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:47,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:47,024 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:47,042 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-19 06:32:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:47,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:32:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:47,043 INFO L225 Difference]: With dead ends: 62 [2024-11-19 06:32:47,043 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 06:32:47,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:47,045 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:47,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 06:32:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-11-19 06:32:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-19 06:32:47,053 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 9 [2024-11-19 06:32:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:47,053 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-19 06:32:47,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-19 06:32:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:32:47,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:47,054 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:47,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:32:47,054 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:47,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2024-11-19 06:32:47,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266542129] [2024-11-19 06:32:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:47,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266542129] [2024-11-19 06:32:47,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266542129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:47,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:47,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:32:47,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073031256] [2024-11-19 06:32:47,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:47,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:32:47,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:32:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:32:47,100 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:47,117 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2024-11-19 06:32:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:32:47,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:32:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:47,118 INFO L225 Difference]: With dead ends: 54 [2024-11-19 06:32:47,118 INFO L226 Difference]: Without dead ends: 54 [2024-11-19 06:32:47,118 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 06:32:47,119 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:47,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 51 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:47,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-19 06:32:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-19 06:32:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 06:32:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-19 06:32:47,123 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 9 [2024-11-19 06:32:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:47,123 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-19 06:32:47,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-19 06:32:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:32:47,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:47,124 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:47,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:32:47,124 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:47,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:47,124 INFO L85 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2024-11-19 06:32:47,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:47,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409343719] [2024-11-19 06:32:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:47,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409343719] [2024-11-19 06:32:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409343719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:47,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:47,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:32:47,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361747133] [2024-11-19 06:32:47,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:47,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:32:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:32:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:47,252 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:47,322 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2024-11-19 06:32:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:47,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:32:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:47,324 INFO L225 Difference]: With dead ends: 58 [2024-11-19 06:32:47,324 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 06:32:47,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:47,325 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 40 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:47,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 78 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 06:32:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-19 06:32:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.425531914893617) internal successors, (67), 55 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 06:32:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-19 06:32:47,332 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 9 [2024-11-19 06:32:47,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:47,332 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-19 06:32:47,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,333 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-19 06:32:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:32:47,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:47,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:47,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:32:47,333 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:47,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:47,334 INFO L85 PathProgramCache]: Analyzing trace with hash 629683416, now seen corresponding path program 1 times [2024-11-19 06:32:47,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:47,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967204208] [2024-11-19 06:32:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:47,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:47,447 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 06:32:47,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:47,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967204208] [2024-11-19 06:32:47,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967204208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:47,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:47,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64655651] [2024-11-19 06:32:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:47,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:47,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:47,450 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:47,466 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-11-19 06:32:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:47,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-19 06:32:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:47,467 INFO L225 Difference]: With dead ends: 68 [2024-11-19 06:32:47,467 INFO L226 Difference]: Without dead ends: 68 [2024-11-19 06:32:47,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:47,468 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 75 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 06:32:47,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 75 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-19 06:32:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-11-19 06:32:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.396551724137931) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2024-11-19 06:32:47,472 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 10 [2024-11-19 06:32:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:47,472 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2024-11-19 06:32:47,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2024-11-19 06:32:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:32:47,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:47,473 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:47,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:32:47,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:47,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash -179663210, now seen corresponding path program 1 times [2024-11-19 06:32:47,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:47,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142511571] [2024-11-19 06:32:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:47,609 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 06:32:47,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:47,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142511571] [2024-11-19 06:32:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142511571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:47,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:47,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:47,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598546199] [2024-11-19 06:32:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:47,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:47,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:47,611 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:47,661 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2024-11-19 06:32:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-19 06:32:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:47,663 INFO L225 Difference]: With dead ends: 83 [2024-11-19 06:32:47,663 INFO L226 Difference]: Without dead ends: 83 [2024-11-19 06:32:47,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:47,663 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:47,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 100 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-19 06:32:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2024-11-19 06:32:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.396551724137931) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2024-11-19 06:32:47,671 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 10 [2024-11-19 06:32:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:47,672 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2024-11-19 06:32:47,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2024-11-19 06:32:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:47,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:47,673 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:47,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:32:47,673 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:47,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:47,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1954650589, now seen corresponding path program 1 times [2024-11-19 06:32:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:47,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260407190] [2024-11-19 06:32:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:47,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:47,769 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 06:32:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260407190] [2024-11-19 06:32:47,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260407190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:47,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:47,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:47,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975308693] [2024-11-19 06:32:47,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:47,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:47,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:47,772 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:47,794 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2024-11-19 06:32:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:47,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 06:32:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:47,794 INFO L225 Difference]: With dead ends: 74 [2024-11-19 06:32:47,795 INFO L226 Difference]: Without dead ends: 74 [2024-11-19 06:32:47,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:47,795 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 71 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 06:32:47,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 71 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-19 06:32:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-19 06:32:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.380952380952381) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2024-11-19 06:32:47,801 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 11 [2024-11-19 06:32:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:47,802 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2024-11-19 06:32:47,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2024-11-19 06:32:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:47,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:47,802 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:47,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:32:47,802 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:47,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1530970081, now seen corresponding path program 1 times [2024-11-19 06:32:47,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750903546] [2024-11-19 06:32:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:47,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:47,885 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 06:32:47,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750903546] [2024-11-19 06:32:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750903546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:47,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533732908] [2024-11-19 06:32:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:47,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:47,888 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:47,913 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2024-11-19 06:32:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:47,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 06:32:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:47,914 INFO L225 Difference]: With dead ends: 71 [2024-11-19 06:32:47,914 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 06:32:47,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:47,914 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:47,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 70 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 06:32:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-19 06:32:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 65 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-11-19 06:32:47,917 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 11 [2024-11-19 06:32:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:47,920 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-11-19 06:32:47,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-11-19 06:32:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:47,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:47,921 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:47,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:32:47,922 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:47,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2024-11-19 06:32:47,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:47,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855324024] [2024-11-19 06:32:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:48,091 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 06:32:48,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:48,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855324024] [2024-11-19 06:32:48,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855324024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:48,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131512618] [2024-11-19 06:32:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:48,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:48,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:48,095 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 06:32:48,096 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 06:32:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:48,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 06:32:48,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:48,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:48,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-19 06:32:48,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 06:32:48,407 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 06:32:48,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:48,565 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:48,603 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 06:32:48,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131512618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:48,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:48,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-19 06:32:48,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814672414] [2024-11-19 06:32:48,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:48,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:32:48,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:48,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:32:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:32:48,606 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:48,747 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2024-11-19 06:32:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 06:32:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:48,747 INFO L225 Difference]: With dead ends: 71 [2024-11-19 06:32:48,748 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 06:32:48,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:32:48,748 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:48,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 182 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 06:32:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-11-19 06:32:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 06:32:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-19 06:32:48,751 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 11 [2024-11-19 06:32:48,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:48,752 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-19 06:32:48,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-19 06:32:48,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:32:48,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:48,752 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:48,766 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 06:32:48,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 06:32:48,953 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:48,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2024-11-19 06:32:48,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:48,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185304818] [2024-11-19 06:32:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:48,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:49,125 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 06:32:49,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185304818] [2024-11-19 06:32:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185304818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710726627] [2024-11-19 06:32:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:49,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:49,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:49,128 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 06:32:49,129 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 06:32:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:49,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 06:32:49,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:49,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-19 06:32:49,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:32:49,369 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 06:32:49,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:49,508 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 06:32:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710726627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:49,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:49,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-19 06:32:49,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503125750] [2024-11-19 06:32:49,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:49,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:32:49,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:32:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:32:49,510 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:49,642 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2024-11-19 06:32:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:32:49,643 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:32:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:49,644 INFO L225 Difference]: With dead ends: 68 [2024-11-19 06:32:49,644 INFO L226 Difference]: Without dead ends: 68 [2024-11-19 06:32:49,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:32:49,645 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 36 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:49,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 118 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:49,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-19 06:32:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2024-11-19 06:32:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-19 06:32:49,651 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 13 [2024-11-19 06:32:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:49,651 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-19 06:32:49,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-19 06:32:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 06:32:49,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:49,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:49,668 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 06:32:49,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 06:32:49,853 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:49,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash 170900347, now seen corresponding path program 1 times [2024-11-19 06:32:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:49,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935164788] [2024-11-19 06:32:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:49,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:49,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935164788] [2024-11-19 06:32:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935164788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279726784] [2024-11-19 06:32:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:49,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:49,901 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:49,932 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-19 06:32:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 06:32:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:49,933 INFO L225 Difference]: With dead ends: 57 [2024-11-19 06:32:49,933 INFO L226 Difference]: Without dead ends: 57 [2024-11-19 06:32:49,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:49,934 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:49,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 77 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-19 06:32:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-19 06:32:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-19 06:32:49,936 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 14 [2024-11-19 06:32:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:49,936 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-19 06:32:49,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-19 06:32:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 06:32:49,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:49,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:49,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 06:32:49,937 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:49,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash 170900348, now seen corresponding path program 1 times [2024-11-19 06:32:49,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:49,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894722949] [2024-11-19 06:32:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:50,028 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 06:32:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894722949] [2024-11-19 06:32:50,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894722949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:50,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:50,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:32:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256518799] [2024-11-19 06:32:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:50,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:32:50,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:32:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:50,030 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:50,083 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-11-19 06:32:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:50,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 06:32:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:50,084 INFO L225 Difference]: With dead ends: 61 [2024-11-19 06:32:50,084 INFO L226 Difference]: Without dead ends: 61 [2024-11-19 06:32:50,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:50,084 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:50,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 133 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-19 06:32:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-11-19 06:32:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 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 06:32:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-19 06:32:50,086 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 14 [2024-11-19 06:32:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:50,087 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-19 06:32:50,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-19 06:32:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 06:32:50,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:50,087 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:50,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 06:32:50,088 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:50,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash -115553677, now seen corresponding path program 1 times [2024-11-19 06:32:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:50,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172718613] [2024-11-19 06:32:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:50,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:50,222 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 06:32:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172718613] [2024-11-19 06:32:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172718613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:32:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112104573] [2024-11-19 06:32:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:50,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:32:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:32:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:50,224 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:50,256 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-19 06:32:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:50,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 06:32:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:50,257 INFO L225 Difference]: With dead ends: 58 [2024-11-19 06:32:50,257 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 06:32:50,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:50,258 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:50,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 96 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 06:32:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2024-11-19 06:32:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.255813953488372) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-19 06:32:50,259 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2024-11-19 06:32:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:50,259 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-19 06:32:50,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-19 06:32:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 06:32:50,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:50,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:50,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 06:32:50,260 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:50,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1756025608, now seen corresponding path program 1 times [2024-11-19 06:32:50,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:50,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891847799] [2024-11-19 06:32:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:50,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:50,310 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 06:32:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:50,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891847799] [2024-11-19 06:32:50,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891847799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:50,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:50,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:32:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743658014] [2024-11-19 06:32:50,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:50,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:32:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:32:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:50,312 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:50,357 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-19 06:32:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:50,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 06:32:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:50,358 INFO L225 Difference]: With dead ends: 47 [2024-11-19 06:32:50,358 INFO L226 Difference]: Without dead ends: 47 [2024-11-19 06:32:50,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:50,359 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:50,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 90 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-19 06:32:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-19 06:32:50,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-19 06:32:50,360 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 17 [2024-11-19 06:32:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:50,361 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-19 06:32:50,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-19 06:32:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 06:32:50,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:50,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:50,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 06:32:50,362 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:50,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:50,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1756025609, now seen corresponding path program 1 times [2024-11-19 06:32:50,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:50,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836353378] [2024-11-19 06:32:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:50,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:50,507 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 06:32:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836353378] [2024-11-19 06:32:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836353378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:50,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:32:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817414678] [2024-11-19 06:32:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:50,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:32:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:32:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:50,509 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:50,599 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-19 06:32:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:32:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 06:32:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:50,600 INFO L225 Difference]: With dead ends: 53 [2024-11-19 06:32:50,600 INFO L226 Difference]: Without dead ends: 53 [2024-11-19 06:32:50,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:32:50,601 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:50,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 130 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-19 06:32:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2024-11-19 06:32:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-19 06:32:50,603 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 17 [2024-11-19 06:32:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:50,603 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-19 06:32:50,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-19 06:32:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:32:50,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:50,604 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:50,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 06:32:50,604 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:50,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1876099281, now seen corresponding path program 1 times [2024-11-19 06:32:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:50,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347097660] [2024-11-19 06:32:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:50,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:50,720 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 06:32:50,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:50,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347097660] [2024-11-19 06:32:50,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347097660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:50,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:50,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:50,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500716502] [2024-11-19 06:32:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:50,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:50,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:50,722 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:50,739 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-19 06:32:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:50,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 06:32:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:50,739 INFO L225 Difference]: With dead ends: 47 [2024-11-19 06:32:50,739 INFO L226 Difference]: Without dead ends: 44 [2024-11-19 06:32:50,740 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 06:32:50,740 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:50,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-19 06:32:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-19 06:32:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-19 06:32:50,741 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 22 [2024-11-19 06:32:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:50,742 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-19 06:32:50,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-19 06:32:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:32:50,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:50,742 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:50,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 06:32:50,743 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:50,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1876047353, now seen corresponding path program 1 times [2024-11-19 06:32:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:50,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091770650] [2024-11-19 06:32:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:50,888 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 06:32:50,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:50,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091770650] [2024-11-19 06:32:50,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091770650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:50,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:50,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 06:32:50,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296526863] [2024-11-19 06:32:50,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:50,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:32:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:32:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:32:50,890 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:50,944 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2024-11-19 06:32:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:32:50,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 06:32:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:50,944 INFO L225 Difference]: With dead ends: 66 [2024-11-19 06:32:50,945 INFO L226 Difference]: Without dead ends: 66 [2024-11-19 06:32:50,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:32:50,945 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:50,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 189 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-19 06:32:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-19 06:32:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-11-19 06:32:50,946 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 22 [2024-11-19 06:32:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:50,947 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-11-19 06:32:50,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:50,947 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-11-19 06:32:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:32:50,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:50,947 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:50,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 06:32:50,947 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:50,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1876045175, now seen corresponding path program 1 times [2024-11-19 06:32:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145739950] [2024-11-19 06:32:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:51,081 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 06:32:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:51,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145739950] [2024-11-19 06:32:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145739950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:51,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:51,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 06:32:51,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626228041] [2024-11-19 06:32:51,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:51,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:32:51,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:32:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:32:51,082 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:51,151 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2024-11-19 06:32:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:32:51,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 06:32:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:51,153 INFO L225 Difference]: With dead ends: 87 [2024-11-19 06:32:51,153 INFO L226 Difference]: Without dead ends: 54 [2024-11-19 06:32:51,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:32:51,154 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:51,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 187 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-19 06:32:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-19 06:32:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-11-19 06:32:51,158 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2024-11-19 06:32:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:51,158 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-11-19 06:32:51,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-11-19 06:32:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:32:51,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:51,158 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:51,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 06:32:51,159 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:51,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash 729978379, now seen corresponding path program 1 times [2024-11-19 06:32:51,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:51,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006371815] [2024-11-19 06:32:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:51,345 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 06:32:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006371815] [2024-11-19 06:32:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006371815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:51,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:51,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 06:32:51,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315874714] [2024-11-19 06:32:51,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:51,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:32:51,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:51,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:32:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:32:51,347 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:51,438 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-11-19 06:32:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:32:51,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 06:32:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:51,439 INFO L225 Difference]: With dead ends: 84 [2024-11-19 06:32:51,439 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 06:32:51,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:32:51,440 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:51,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 171 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 06:32:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-11-19 06:32:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 06:32:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-19 06:32:51,441 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 22 [2024-11-19 06:32:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:51,442 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-19 06:32:51,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-19 06:32:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:32:51,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:51,443 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:51,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 06:32:51,443 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:51,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash 442454312, now seen corresponding path program 1 times [2024-11-19 06:32:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648036490] [2024-11-19 06:32:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:51,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:51,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648036490] [2024-11-19 06:32:51,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648036490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106051052] [2024-11-19 06:32:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:51,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:51,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:51,684 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 06:32:51,685 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 06:32:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:51,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 06:32:51,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:51,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:51,992 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 06:32:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:52,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106051052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:52,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:52,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2024-11-19 06:32:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845208841] [2024-11-19 06:32:52,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:52,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 06:32:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 06:32:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-19 06:32:52,017 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:52,239 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-11-19 06:32:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:32:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-19 06:32:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:52,240 INFO L225 Difference]: With dead ends: 76 [2024-11-19 06:32:52,240 INFO L226 Difference]: Without dead ends: 76 [2024-11-19 06:32:52,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:32:52,241 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:52,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 236 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-19 06:32:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2024-11-19 06:32:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.140625) internal successors, (73), 65 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 06:32:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2024-11-19 06:32:52,242 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 26 [2024-11-19 06:32:52,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:52,242 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2024-11-19 06:32:52,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2024-11-19 06:32:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:32:52,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:52,242 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:52,256 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 06:32:52,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:52,443 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:52,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 308438628, now seen corresponding path program 1 times [2024-11-19 06:32:52,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902767724] [2024-11-19 06:32:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:52,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902767724] [2024-11-19 06:32:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902767724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:52,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:52,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 06:32:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835948724] [2024-11-19 06:32:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:52,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:32:52,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:32:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:32:52,598 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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 06:32:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:52,654 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2024-11-19 06:32:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:32:52,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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) Word has length 26 [2024-11-19 06:32:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:52,655 INFO L225 Difference]: With dead ends: 96 [2024-11-19 06:32:52,655 INFO L226 Difference]: Without dead ends: 96 [2024-11-19 06:32:52,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:32:52,656 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:52,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 159 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-19 06:32:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 67. [2024-11-19 06:32:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2024-11-19 06:32:52,657 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 26 [2024-11-19 06:32:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:52,657 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2024-11-19 06:32:52,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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 06:32:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2024-11-19 06:32:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 06:32:52,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:52,658 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:52,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 06:32:52,658 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:52,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash -649971903, now seen corresponding path program 1 times [2024-11-19 06:32:52,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:52,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313390981] [2024-11-19 06:32:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:52,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313390981] [2024-11-19 06:32:52,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313390981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329470580] [2024-11-19 06:32:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:52,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:52,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:52,839 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 06:32:52,840 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 06:32:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:52,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 06:32:52,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:52,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:53,106 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 06:32:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329470580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:53,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:53,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-19 06:32:53,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391223030] [2024-11-19 06:32:53,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:53,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:32:53,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:32:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:32:53,135 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 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 06:32:53,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:53,314 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2024-11-19 06:32:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:32:53,314 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 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 06:32:53,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:53,315 INFO L225 Difference]: With dead ends: 86 [2024-11-19 06:32:53,315 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 06:32:53,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:32:53,315 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:53,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 469 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 06:32:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2024-11-19 06:32:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.1625) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2024-11-19 06:32:53,317 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 30 [2024-11-19 06:32:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:53,317 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2024-11-19 06:32:53,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 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 06:32:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2024-11-19 06:32:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:32:53,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:53,318 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:53,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:53,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:53,522 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:53,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:53,522 INFO L85 PathProgramCache]: Analyzing trace with hash 108941258, now seen corresponding path program 2 times [2024-11-19 06:32:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:53,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674884951] [2024-11-19 06:32:53,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:53,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:53,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:53,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674884951] [2024-11-19 06:32:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674884951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:53,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381913971] [2024-11-19 06:32:53,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:53,902 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 06:32:53,903 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 06:32:53,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:53,966 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:53,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-19 06:32:53,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:54,117 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 06:32:54,143 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 06:32:54,290 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:54,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:32:54,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-19 06:32:54,536 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:54,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:32:54,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2024-11-19 06:32:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:54,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:54,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-19 06:32:54,997 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 36 treesize of output 32 [2024-11-19 06:32:55,094 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 06:32:55,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 06:32:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:55,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381913971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:55,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:55,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 48 [2024-11-19 06:32:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886787024] [2024-11-19 06:32:55,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:55,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 06:32:55,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 06:32:55,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2106, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 06:32:55,532 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:56,607 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2024-11-19 06:32:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 06:32:56,608 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-19 06:32:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:56,608 INFO L225 Difference]: With dead ends: 174 [2024-11-19 06:32:56,608 INFO L226 Difference]: Without dead ends: 134 [2024-11-19 06:32:56,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=352, Invalid=5050, Unknown=0, NotChecked=0, Total=5402 [2024-11-19 06:32:56,610 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:56,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 491 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:32:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-19 06:32:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 112. [2024-11-19 06:32:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 06:32:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2024-11-19 06:32:56,613 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 31 [2024-11-19 06:32:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:56,613 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2024-11-19 06:32:56,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2024-11-19 06:32:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 06:32:56,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:56,613 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:56,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:56,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-19 06:32:56,818 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:56,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1628816717, now seen corresponding path program 3 times [2024-11-19 06:32:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2979851] [2024-11-19 06:32:56,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:56,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:32:56,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2979851] [2024-11-19 06:32:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2979851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768595760] [2024-11-19 06:32:57,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:57,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:57,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:57,124 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 06:32:57,125 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 06:32:57,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:32:57,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:57,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-19 06:32:57,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:57,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:57,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-19 06:32:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:57,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768595760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:57,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:57,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2024-11-19 06:32:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517323760] [2024-11-19 06:32:57,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:57,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 06:32:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 06:32:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2024-11-19 06:32:57,576 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:57,789 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2024-11-19 06:32:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 06:32:57,789 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-19 06:32:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:57,790 INFO L225 Difference]: With dead ends: 140 [2024-11-19 06:32:57,790 INFO L226 Difference]: Without dead ends: 140 [2024-11-19 06:32:57,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 06:32:57,791 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 66 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:57,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 255 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-19 06:32:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2024-11-19 06:32:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.136) internal successors, (142), 126 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 06:32:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2024-11-19 06:32:57,793 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 35 [2024-11-19 06:32:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:57,793 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2024-11-19 06:32:57,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2024-11-19 06:32:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 06:32:57,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:57,794 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:57,809 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 06:32:57,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 06:32:57,998 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:32:57,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:57,998 INFO L85 PathProgramCache]: Analyzing trace with hash 658419916, now seen corresponding path program 2 times [2024-11-19 06:32:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:57,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069385455] [2024-11-19 06:32:57,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:57,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:58,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:58,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:58,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069385455] [2024-11-19 06:32:58,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069385455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:58,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374883515] [2024-11-19 06:32:58,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:58,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:58,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:58,539 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 06:32:58,544 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 06:32:58,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:58,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:58,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-19 06:32:58,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:58,817 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 06:32:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:59,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:59,099 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 06:32:59,101 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 06:32:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:59,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374883515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:59,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:59,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 15] total 46 [2024-11-19 06:32:59,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776971746] [2024-11-19 06:32:59,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:59,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 06:32:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 06:32:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1890, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 06:32:59,254 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:59,798 INFO L93 Difference]: Finished difference Result 213 states and 233 transitions. [2024-11-19 06:32:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 06:32:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-19 06:32:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:59,799 INFO L225 Difference]: With dead ends: 213 [2024-11-19 06:32:59,799 INFO L226 Difference]: Without dead ends: 193 [2024-11-19 06:32:59,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2024-11-19 06:32:59,801 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 69 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:59,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 629 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:32:59,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-19 06:32:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 165. [2024-11-19 06:32:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 1.1411042944785277) internal successors, (186), 164 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 06:32:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2024-11-19 06:32:59,803 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 38 [2024-11-19 06:32:59,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:59,803 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2024-11-19 06:32:59,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2024-11-19 06:32:59,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-19 06:32:59,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:59,804 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:59,816 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 06:33:00,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:00,005 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:00,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1294751035, now seen corresponding path program 4 times [2024-11-19 06:33:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:00,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368670022] [2024-11-19 06:33:00,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:00,030 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:00,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:00,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368670022] [2024-11-19 06:33:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368670022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799027493] [2024-11-19 06:33:00,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:00,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:00,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:00,491 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 06:33:00,493 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 06:33:00,562 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:00,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:00,564 WARN L253 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-19 06:33:00,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:00,733 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 06:33:00,762 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 06:33:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:01,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:01,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-19 06:33:01,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:33:01,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-19 06:33:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:01,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799027493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:01,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:01,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 21] total 44 [2024-11-19 06:33:01,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492033889] [2024-11-19 06:33:01,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:01,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 06:33:01,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 06:33:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1699, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 06:33:01,390 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:33:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:02,023 INFO L93 Difference]: Finished difference Result 307 states and 335 transitions. [2024-11-19 06:33:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 06:33:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-19 06:33:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:02,024 INFO L225 Difference]: With dead ends: 307 [2024-11-19 06:33:02,024 INFO L226 Difference]: Without dead ends: 244 [2024-11-19 06:33:02,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=389, Invalid=3517, Unknown=0, NotChecked=0, Total=3906 [2024-11-19 06:33:02,025 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 79 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:02,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 361 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:33:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-19 06:33:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 209. [2024-11-19 06:33:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 1.1304347826086956) internal successors, (234), 208 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 06:33:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 234 transitions. [2024-11-19 06:33:02,030 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 234 transitions. Word has length 40 [2024-11-19 06:33:02,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:02,030 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 234 transitions. [2024-11-19 06:33:02,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:33:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 234 transitions. [2024-11-19 06:33:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 06:33:02,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:02,031 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:02,046 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 06:33:02,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 06:33:02,231 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:02,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash -201122263, now seen corresponding path program 3 times [2024-11-19 06:33:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:02,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004280472] [2024-11-19 06:33:02,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:33:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:02,246 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:33:02,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:33:02,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:02,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004280472] [2024-11-19 06:33:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004280472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467561641] [2024-11-19 06:33:02,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:33:02,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:02,494 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 06:33:02,495 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 06:33:02,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:33:02,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:02,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-19 06:33:02,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:02,585 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 06:33:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:02,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:03,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467561641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:03,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:03,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 11] total 34 [2024-11-19 06:33:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379640488] [2024-11-19 06:33:03,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:03,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 06:33:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 06:33:03,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 06:33:03,247 INFO L87 Difference]: Start difference. First operand 209 states and 234 transitions. Second operand has 35 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 35 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 06:33:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:03,553 INFO L93 Difference]: Finished difference Result 252 states and 280 transitions. [2024-11-19 06:33:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 06:33:03,553 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 35 states have internal predecessors, (118), 0 states have call successors, (0), 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 42 [2024-11-19 06:33:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:03,554 INFO L225 Difference]: With dead ends: 252 [2024-11-19 06:33:03,554 INFO L226 Difference]: Without dead ends: 252 [2024-11-19 06:33:03,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 06:33:03,555 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:03,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 450 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:33:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-19 06:33:03,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2024-11-19 06:33:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 248 states have (on average 1.1290322580645162) internal successors, (280), 249 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 06:33:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2024-11-19 06:33:03,560 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 42 [2024-11-19 06:33:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:03,560 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2024-11-19 06:33:03,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 35 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 06:33:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2024-11-19 06:33:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 06:33:03,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:03,560 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:03,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 06:33:03,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:33:03,765 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:03,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash -463161182, now seen corresponding path program 5 times [2024-11-19 06:33:03,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:03,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119597641] [2024-11-19 06:33:03,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:33:03,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:03,786 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 06:33:03,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:04,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:04,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119597641] [2024-11-19 06:33:04,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119597641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569543092] [2024-11-19 06:33:04,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:33:04,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:04,003 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 06:33:04,004 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 06:33:04,077 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 06:33:04,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:04,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-19 06:33:04,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:04,087 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 06:33:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:04,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569543092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:04,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:04,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 34 [2024-11-19 06:33:04,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726863818] [2024-11-19 06:33:04,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:04,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 06:33:04,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 06:33:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 06:33:04,575 INFO L87 Difference]: Start difference. First operand 250 states and 280 transitions. Second operand has 35 states, 34 states have (on average 3.264705882352941) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 06:33:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:04,944 INFO L93 Difference]: Finished difference Result 312 states and 345 transitions. [2024-11-19 06:33:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 06:33:04,945 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.264705882352941) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-19 06:33:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:04,946 INFO L225 Difference]: With dead ends: 312 [2024-11-19 06:33:04,946 INFO L226 Difference]: Without dead ends: 312 [2024-11-19 06:33:04,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=1671, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 06:33:04,947 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:04,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 636 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:33:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-19 06:33:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 275. [2024-11-19 06:33:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 273 states have (on average 1.1318681318681318) internal successors, (309), 274 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 06:33:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 309 transitions. [2024-11-19 06:33:04,952 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 309 transitions. Word has length 44 [2024-11-19 06:33:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:04,952 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 309 transitions. [2024-11-19 06:33:04,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.264705882352941) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 06:33:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 309 transitions. [2024-11-19 06:33:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 06:33:04,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:04,953 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:04,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 06:33:05,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:05,155 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:05,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:05,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1257276560, now seen corresponding path program 6 times [2024-11-19 06:33:05,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:05,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469545435] [2024-11-19 06:33:05,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:33:05,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:05,184 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 06:33:05,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:05,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469545435] [2024-11-19 06:33:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469545435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143904009] [2024-11-19 06:33:05,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:33:05,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:05,489 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 06:33:05,490 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 06:33:05,641 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 06:33:05,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:05,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-19 06:33:05,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:05,672 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 06:33:05,843 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 06:33:05,871 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 06:33:06,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:33:06,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 06:33:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:07,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:07,524 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 06:33:07,527 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 06:33:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143904009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:07,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 17] total 55 [2024-11-19 06:33:07,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701841553] [2024-11-19 06:33:07,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:07,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-19 06:33:07,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-19 06:33:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2753, Unknown=0, NotChecked=0, Total=2970 [2024-11-19 06:33:07,882 INFO L87 Difference]: Start difference. First operand 275 states and 309 transitions. Second operand has 55 states, 55 states have (on average 2.5636363636363635) internal successors, (141), 55 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 06:33:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:10,528 INFO L93 Difference]: Finished difference Result 598 states and 646 transitions. [2024-11-19 06:33:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-19 06:33:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.5636363636363635) internal successors, (141), 55 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-19 06:33:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:10,529 INFO L225 Difference]: With dead ends: 598 [2024-11-19 06:33:10,529 INFO L226 Difference]: Without dead ends: 499 [2024-11-19 06:33:10,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=898, Invalid=12212, Unknown=0, NotChecked=0, Total=13110 [2024-11-19 06:33:10,532 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 207 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:10,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1009 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 06:33:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-19 06:33:10,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 372. [2024-11-19 06:33:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 370 states have (on average 1.1297297297297297) internal successors, (418), 371 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 06:33:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 418 transitions. [2024-11-19 06:33:10,539 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 418 transitions. Word has length 49 [2024-11-19 06:33:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:10,539 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 418 transitions. [2024-11-19 06:33:10,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.5636363636363635) internal successors, (141), 55 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 06:33:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 418 transitions. [2024-11-19 06:33:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 06:33:10,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:10,540 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:10,556 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 06:33:10,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-19 06:33:10,740 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:10,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:10,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1539190708, now seen corresponding path program 4 times [2024-11-19 06:33:10,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:10,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253445605] [2024-11-19 06:33:10,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:10,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:10,753 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:10,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:33:11,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253445605] [2024-11-19 06:33:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253445605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:11,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337714294] [2024-11-19 06:33:11,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:11,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:11,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:11,784 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 06:33:11,784 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 06:33:11,860 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:11,860 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:11,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-19 06:33:11,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:11,906 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 06:33:13,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:33:13,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 125 [2024-11-19 06:33:13,802 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 38 treesize of output 30 [2024-11-19 06:33:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:33:13,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:14,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:33:14,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2024-11-19 06:33:15,394 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 57 treesize of output 49 [2024-11-19 06:33:15,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 100 [2024-11-19 06:33:15,414 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 06:33:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:33:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337714294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:15,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:15,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 71 [2024-11-19 06:33:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194431879] [2024-11-19 06:33:15,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:15,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-19 06:33:15,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-19 06:33:15,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=4749, Unknown=0, NotChecked=0, Total=5112 [2024-11-19 06:33:15,457 INFO L87 Difference]: Start difference. First operand 372 states and 418 transitions. Second operand has 72 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 72 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 06:33:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:18,383 INFO L93 Difference]: Finished difference Result 474 states and 525 transitions. [2024-11-19 06:33:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-19 06:33:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 72 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 50 [2024-11-19 06:33:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:18,385 INFO L225 Difference]: With dead ends: 474 [2024-11-19 06:33:18,385 INFO L226 Difference]: Without dead ends: 286 [2024-11-19 06:33:18,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=846, Invalid=8466, Unknown=0, NotChecked=0, Total=9312 [2024-11-19 06:33:18,388 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:18,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 378 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 06:33:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-19 06:33:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 174. [2024-11-19 06:33:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.115606936416185) internal successors, (193), 173 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 06:33:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2024-11-19 06:33:18,394 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 50 [2024-11-19 06:33:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:18,395 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2024-11-19 06:33:18,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 72 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 06:33:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2024-11-19 06:33:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 06:33:18,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:18,396 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:18,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 06:33:18,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-19 06:33:18,596 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:18,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1748106113, now seen corresponding path program 7 times [2024-11-19 06:33:18,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:18,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471864689] [2024-11-19 06:33:18,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:33:18,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:33:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471864689] [2024-11-19 06:33:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471864689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347881017] [2024-11-19 06:33:18,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:33:18,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:18,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:18,968 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 06:33:18,969 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 06:33:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:33:19,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-19 06:33:19,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:19,153 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 06:33:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:19,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:19,248 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 06:33:19,249 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 06:33:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:19,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347881017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:19,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:19,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 33 [2024-11-19 06:33:19,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331064209] [2024-11-19 06:33:19,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:19,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 06:33:19,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:19,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 06:33:19,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:33:19,315 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 06:33:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:19,712 INFO L93 Difference]: Finished difference Result 312 states and 339 transitions. [2024-11-19 06:33:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 06:33:19,713 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-19 06:33:19,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:19,713 INFO L225 Difference]: With dead ends: 312 [2024-11-19 06:33:19,713 INFO L226 Difference]: Without dead ends: 195 [2024-11-19 06:33:19,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=1978, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 06:33:19,714 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:19,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 893 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:33:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-19 06:33:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 186. [2024-11-19 06:33:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.1081081081081081) internal successors, (205), 185 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 06:33:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 205 transitions. [2024-11-19 06:33:19,716 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 205 transitions. Word has length 58 [2024-11-19 06:33:19,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:19,716 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 205 transitions. [2024-11-19 06:33:19,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 06:33:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 205 transitions. [2024-11-19 06:33:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 06:33:19,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:19,717 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:19,729 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 06:33:19,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-19 06:33:19,917 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:19,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash 439104796, now seen corresponding path program 8 times [2024-11-19 06:33:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:19,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117236853] [2024-11-19 06:33:19,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:33:19,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:19,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:33:19,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117236853] [2024-11-19 06:33:20,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117236853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863524542] [2024-11-19 06:33:20,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:33:20,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:20,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:20,283 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 06:33:20,284 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 06:33:20,371 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:33:20,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:20,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-19 06:33:20,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:20,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:20,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-19 06:33:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863524542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:21,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:21,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 44 [2024-11-19 06:33:21,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720237480] [2024-11-19 06:33:21,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:21,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-19 06:33:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-19 06:33:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1733, Unknown=0, NotChecked=0, Total=1980 [2024-11-19 06:33:21,033 INFO L87 Difference]: Start difference. First operand 186 states and 205 transitions. Second operand has 45 states, 44 states have (on average 3.477272727272727) internal successors, (153), 45 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:33:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:21,450 INFO L93 Difference]: Finished difference Result 231 states and 252 transitions. [2024-11-19 06:33:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 06:33:21,451 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.477272727272727) internal successors, (153), 45 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-19 06:33:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:21,451 INFO L225 Difference]: With dead ends: 231 [2024-11-19 06:33:21,451 INFO L226 Difference]: Without dead ends: 231 [2024-11-19 06:33:21,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=390, Invalid=2916, Unknown=0, NotChecked=0, Total=3306 [2024-11-19 06:33:21,452 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 161 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:21,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 618 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:33:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-19 06:33:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 201. [2024-11-19 06:33:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.11) internal successors, (222), 200 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:33:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 222 transitions. [2024-11-19 06:33:21,455 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 222 transitions. Word has length 62 [2024-11-19 06:33:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:21,456 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 222 transitions. [2024-11-19 06:33:21,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.477272727272727) internal successors, (153), 45 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:33:21,456 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 222 transitions. [2024-11-19 06:33:21,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 06:33:21,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:21,456 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:21,472 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 06:33:21,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:21,660 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:21,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash 44418134, now seen corresponding path program 9 times [2024-11-19 06:33:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061431674] [2024-11-19 06:33:21,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:33:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:21,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 06:33:21,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061431674] [2024-11-19 06:33:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061431674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593243731] [2024-11-19 06:33:22,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:33:22,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:22,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:22,114 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 06:33:22,115 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 06:33:22,229 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 06:33:22,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:22,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-19 06:33:22,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:22,360 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 06:33:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:22,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:22,503 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 06:33:22,505 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 06:33:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:22,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593243731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:22,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:22,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 21] total 37 [2024-11-19 06:33:22,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26408992] [2024-11-19 06:33:22,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:22,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 06:33:22,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 06:33:22,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 06:33:22,587 INFO L87 Difference]: Start difference. First operand 201 states and 222 transitions. Second operand has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 06:33:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:23,080 INFO L93 Difference]: Finished difference Result 360 states and 391 transitions. [2024-11-19 06:33:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 06:33:23,081 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 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 06:33:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:23,081 INFO L225 Difference]: With dead ends: 360 [2024-11-19 06:33:23,081 INFO L226 Difference]: Without dead ends: 222 [2024-11-19 06:33:23,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=2648, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 06:33:23,082 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 78 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:23,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1097 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:33:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-19 06:33:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 213. [2024-11-19 06:33:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.1037735849056605) internal successors, (234), 212 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 06:33:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2024-11-19 06:33:23,085 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 67 [2024-11-19 06:33:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:23,085 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2024-11-19 06:33:23,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 06:33:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2024-11-19 06:33:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 06:33:23,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:23,086 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:23,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 06:33:23,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:23,287 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:23,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash -532155303, now seen corresponding path program 10 times [2024-11-19 06:33:23,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:23,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126237084] [2024-11-19 06:33:23,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:23,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:23,313 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:23,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:25,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126237084] [2024-11-19 06:33:25,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126237084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83027956] [2024-11-19 06:33:25,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:25,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:25,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:25,322 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 06:33:25,323 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 06:33:25,411 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:25,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:25,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-19 06:33:25,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:25,531 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 06:33:25,570 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 06:33:28,861 INFO L349 Elim1Store]: treesize reduction 20, result has 69.7 percent of original size [2024-11-19 06:33:28,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 72 [2024-11-19 06:33:28,867 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-19 06:33:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-19 06:33:29,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:31,822 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 93 treesize of output 81 [2024-11-19 06:33:31,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 127 [2024-11-19 06:33:31,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 06:33:31,849 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-19 06:33:31,931 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 06:33:31,933 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 06:33:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-19 06:33:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83027956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:32,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 34, 34] total 101 [2024-11-19 06:33:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163625760] [2024-11-19 06:33:32,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:32,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-11-19 06:33:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-11-19 06:33:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=9758, Unknown=0, NotChecked=0, Total=10302 [2024-11-19 06:33:32,096 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 102 states, 101 states have (on average 1.6435643564356435) internal successors, (166), 102 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:33:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:44,351 INFO L93 Difference]: Finished difference Result 405 states and 434 transitions. [2024-11-19 06:33:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-19 06:33:44,351 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.6435643564356435) internal successors, (166), 102 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-19 06:33:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:44,352 INFO L225 Difference]: With dead ends: 405 [2024-11-19 06:33:44,352 INFO L226 Difference]: Without dead ends: 334 [2024-11-19 06:33:44,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11528 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1966, Invalid=40676, Unknown=0, NotChecked=0, Total=42642 [2024-11-19 06:33:44,354 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 222 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 5000 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 5011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:44,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1371 Invalid, 5011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5000 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 06:33:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-19 06:33:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 225. [2024-11-19 06:33:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.1026785714285714) internal successors, (247), 224 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 06:33:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 247 transitions. [2024-11-19 06:33:44,359 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 247 transitions. Word has length 71 [2024-11-19 06:33:44,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:44,359 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 247 transitions. [2024-11-19 06:33:44,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.6435643564356435) internal successors, (166), 102 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:33:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 247 transitions. [2024-11-19 06:33:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 06:33:44,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:44,360 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:44,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 06:33:44,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-19 06:33:44,560 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:44,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1610806647, now seen corresponding path program 1 times [2024-11-19 06:33:44,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:44,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35943491] [2024-11-19 06:33:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:33:44,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:33:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:45,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:45,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35943491] [2024-11-19 06:33:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35943491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260576139] [2024-11-19 06:33:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:33:45,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:45,050 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 06:33:45,052 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 06:33:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:33:45,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-19 06:33:45,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:45,315 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 06:33:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:45,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:45,441 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 06:33:45,442 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 06:33:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260576139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:45,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:45,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 39 [2024-11-19 06:33:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244858860] [2024-11-19 06:33:45,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:45,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-19 06:33:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-19 06:33:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 06:33:45,504 INFO L87 Difference]: Start difference. First operand 225 states and 247 transitions. Second operand has 39 states, 39 states have (on average 3.0256410256410255) internal successors, (118), 39 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 06:33:46,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:46,100 INFO L93 Difference]: Finished difference Result 405 states and 439 transitions. [2024-11-19 06:33:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 06:33:46,101 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0256410256410255) internal successors, (118), 39 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-19 06:33:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:46,102 INFO L225 Difference]: With dead ends: 405 [2024-11-19 06:33:46,102 INFO L226 Difference]: Without dead ends: 246 [2024-11-19 06:33:46,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=2968, Unknown=0, NotChecked=0, Total=3192 [2024-11-19 06:33:46,102 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 135 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:46,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1263 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:33:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-19 06:33:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2024-11-19 06:33:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.097457627118644) internal successors, (259), 236 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 06:33:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 259 transitions. [2024-11-19 06:33:46,105 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 259 transitions. Word has length 76 [2024-11-19 06:33:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:46,105 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 259 transitions. [2024-11-19 06:33:46,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0256410256410255) internal successors, (118), 39 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 06:33:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 259 transitions. [2024-11-19 06:33:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 06:33:46,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:46,106 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:46,122 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 06:33:46,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-19 06:33:46,307 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:46,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1473497556, now seen corresponding path program 2 times [2024-11-19 06:33:46,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:46,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259149136] [2024-11-19 06:33:46,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:33:46,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:46,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:33:46,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:46,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:46,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259149136] [2024-11-19 06:33:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259149136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:46,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498583647] [2024-11-19 06:33:46,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:33:46,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:46,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:46,792 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 06:33:46,793 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 06:33:46,898 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:33:46,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:46,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-19 06:33:46,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:47,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:47,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-19 06:33:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:47,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498583647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:47,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:47,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 54 [2024-11-19 06:33:47,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606164763] [2024-11-19 06:33:47,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:47,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-19 06:33:47,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:47,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-19 06:33:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2601, Unknown=0, NotChecked=0, Total=2970 [2024-11-19 06:33:47,791 INFO L87 Difference]: Start difference. First operand 237 states and 259 transitions. Second operand has 55 states, 54 states have (on average 3.6481481481481484) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 06:33:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:48,441 INFO L93 Difference]: Finished difference Result 294 states and 318 transitions. [2024-11-19 06:33:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 06:33:48,442 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.6481481481481484) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-19 06:33:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:48,443 INFO L225 Difference]: With dead ends: 294 [2024-11-19 06:33:48,443 INFO L226 Difference]: Without dead ends: 294 [2024-11-19 06:33:48,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=574, Invalid=4538, Unknown=0, NotChecked=0, Total=5112 [2024-11-19 06:33:48,443 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 245 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:48,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 997 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:33:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-19 06:33:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 252. [2024-11-19 06:33:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.099601593625498) internal successors, (276), 251 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 06:33:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2024-11-19 06:33:48,447 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 80 [2024-11-19 06:33:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:48,447 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2024-11-19 06:33:48,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.6481481481481484) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 06:33:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2024-11-19 06:33:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 06:33:48,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:48,448 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:48,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 06:33:48,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-19 06:33:48,653 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:48,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash -57253218, now seen corresponding path program 3 times [2024-11-19 06:33:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849702841] [2024-11-19 06:33:48,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:33:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:48,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-19 06:33:48,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849702841] [2024-11-19 06:33:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849702841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844548803] [2024-11-19 06:33:49,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:33:49,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:49,330 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 06:33:49,331 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 06:33:49,469 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-19 06:33:49,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:49,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-19 06:33:49,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:49,762 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 06:33:49,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:33:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:49,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:33:50,029 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 06:33:50,031 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 06:33:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844548803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:33:50,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:33:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 25] total 61 [2024-11-19 06:33:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175440798] [2024-11-19 06:33:50,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:33:50,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-19 06:33:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:33:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-19 06:33:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=3461, Unknown=0, NotChecked=0, Total=3660 [2024-11-19 06:33:50,313 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 61 states, 61 states have (on average 2.8360655737704916) internal successors, (173), 61 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 06:33:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:33:52,242 INFO L93 Difference]: Finished difference Result 453 states and 491 transitions. [2024-11-19 06:33:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-19 06:33:52,243 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.8360655737704916) internal successors, (173), 61 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-19 06:33:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:33:52,243 INFO L225 Difference]: With dead ends: 453 [2024-11-19 06:33:52,243 INFO L226 Difference]: Without dead ends: 273 [2024-11-19 06:33:52,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3274 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=708, Invalid=13098, Unknown=0, NotChecked=0, Total=13806 [2024-11-19 06:33:52,245 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 249 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:33:52,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 2325 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 06:33:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-19 06:33:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 264. [2024-11-19 06:33:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.0950570342205324) internal successors, (288), 263 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 06:33:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 288 transitions. [2024-11-19 06:33:52,251 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 288 transitions. Word has length 85 [2024-11-19 06:33:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:33:52,252 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 288 transitions. [2024-11-19 06:33:52,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.8360655737704916) internal successors, (173), 61 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 06:33:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 288 transitions. [2024-11-19 06:33:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-19 06:33:52,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:33:52,253 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:33:52,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-19 06:33:52,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:52,454 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:33:52,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:33:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1596073697, now seen corresponding path program 4 times [2024-11-19 06:33:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:33:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443797670] [2024-11-19 06:33:52,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:33:52,532 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:52,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:33:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443797670] [2024-11-19 06:33:55,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443797670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:55,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329199796] [2024-11-19 06:33:55,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:55,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:55,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:55,795 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 06:33:55,796 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 06:33:55,905 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:55,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:55,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-19 06:33:55,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:55,946 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 06:34:01,073 INFO L349 Elim1Store]: treesize reduction 28, result has 68.2 percent of original size [2024-11-19 06:34:01,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 90 treesize of output 94 [2024-11-19 06:34:01,079 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-19 06:34:01,096 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-19 06:34:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 117 proven. 37 refuted. 2 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-19 06:34:01,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:34:05,276 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 119 treesize of output 103 [2024-11-19 06:34:05,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 149 [2024-11-19 06:34:05,290 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-19 06:34:05,312 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 06:34:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-19 06:34:05,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329199796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:34:05,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:34:05,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 38, 38] total 118 [2024-11-19 06:34:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662097805] [2024-11-19 06:34:05,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:34:05,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-19 06:34:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:34:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-19 06:34:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=956, Invalid=13085, Unknown=1, NotChecked=0, Total=14042 [2024-11-19 06:34:05,344 INFO L87 Difference]: Start difference. First operand 264 states and 288 transitions. Second operand has 119 states, 118 states have (on average 1.5932203389830508) internal successors, (188), 119 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)