./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 34885b99d6eef31987b044fabc3622fa239d5dff7e774ca124915f70431dc2b3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:48:14,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:48:14,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 17:48:14,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:48:14,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:48:14,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:48:14,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:48:14,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:48:14,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 17:48:14,531 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 17:48:14,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:48:14,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:48:14,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:48:14,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:48:14,534 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:48:14,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:48:14,535 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:48:14,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:48:14,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:48:14,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:48:14,536 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 17:48:14,540 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 17:48:14,540 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 17:48:14,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:48:14,541 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 17:48:14,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:48:14,542 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:48:14,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:48:14,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:48:14,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:48:14,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:48:14,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 17:48:14,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:48:14,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:48:14,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:48:14,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:48:14,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:48:14,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:48:14,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:48:14,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:48:14,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:48:14,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:48:14,565 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34885b99d6eef31987b044fabc3622fa239d5dff7e774ca124915f70431dc2b3 [2024-10-11 17:48:14,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:48:14,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:48:14,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:48:14,865 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:48:14,865 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:48:14,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2024-10-11 17:48:16,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:48:16,663 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:48:16,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2024-10-11 17:48:16,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/80ae90b85/974e8b190c31436fa628358ec6fb8491/FLAG3d130f97f [2024-10-11 17:48:16,706 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/80ae90b85/974e8b190c31436fa628358ec6fb8491 [2024-10-11 17:48:16,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:48:16,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:48:16,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:48:16,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:48:16,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:48:16,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:48:16" (1/1) ... [2024-10-11 17:48:16,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77031335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:16, skipping insertion in model container [2024-10-11 17:48:16,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:48:16" (1/1) ... [2024-10-11 17:48:16,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:48:17,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:48:17,109 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:48:17,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:48:17,206 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:48:17,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17 WrapperNode [2024-10-11 17:48:17,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:48:17,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:48:17,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:48:17,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:48:17,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,260 INFO L138 Inliner]: procedures = 117, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2024-10-11 17:48:17,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:48:17,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:48:17,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:48:17,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:48:17,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,298 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [3, 5]. 63 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 6 writes are split as follows [2, 4]. [2024-10-11 17:48:17,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:48:17,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:48:17,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:48:17,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:48:17,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (1/1) ... [2024-10-11 17:48:17,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:48:17,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:17,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:48:17,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:48:17,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 17:48:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 17:48:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 17:48:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 17:48:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 17:48:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:48:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:48:17,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:48:17,530 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:48:17,532 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:48:17,786 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-10-11 17:48:17,787 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:48:17,830 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:48:17,831 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 17:48:17,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:48:17 BoogieIcfgContainer [2024-10-11 17:48:17,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:48:17,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:48:17,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:48:17,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:48:17,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:48:16" (1/3) ... [2024-10-11 17:48:17,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c99332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:48:17, skipping insertion in model container [2024-10-11 17:48:17,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:48:17" (2/3) ... [2024-10-11 17:48:17,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c99332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:48:17, skipping insertion in model container [2024-10-11 17:48:17,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:48:17" (3/3) ... [2024-10-11 17:48:17,842 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca-2.i [2024-10-11 17:48:17,891 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:48:17,891 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-10-11 17:48:17,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:48:17,953 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;@75a051bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:48:17,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-11 17:48:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 41 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) [2024-10-11 17:48:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 17:48:17,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:17,965 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 17:48:17,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:17,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash 376546795, now seen corresponding path program 1 times [2024-10-11 17:48:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:17,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784805931] [2024-10-11 17:48:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:17,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:18,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784805931] [2024-10-11 17:48:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784805931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:18,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 17:48:18,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182062805] [2024-10-11 17:48:18,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:18,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:48:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:48:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:48:18,207 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 41 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:18,263 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-10-11 17:48:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:48:18,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-11 17:48:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:18,273 INFO L225 Difference]: With dead ends: 43 [2024-10-11 17:48:18,273 INFO L226 Difference]: Without dead ends: 41 [2024-10-11 17:48:18,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:48:18,278 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:18,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 64 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:18,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-11 17:48:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-11 17:48:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 40 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) [2024-10-11 17:48:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-10-11 17:48:18,311 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 6 [2024-10-11 17:48:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:18,312 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-10-11 17:48:18,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-10-11 17:48:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 17:48:18,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:18,313 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:18,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:48:18,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:18,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1211952045, now seen corresponding path program 1 times [2024-10-11 17:48:18,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:18,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020771072] [2024-10-11 17:48:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020771072] [2024-10-11 17:48:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020771072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:18,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:18,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:48:18,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679887863] [2024-10-11 17:48:18,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:18,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:48:18,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:18,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:48:18,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:18,438 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 5 states, 5 states have (on average 1.4) 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) [2024-10-11 17:48:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:18,555 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-10-11 17:48:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:48:18,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) 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 [2024-10-11 17:48:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:18,557 INFO L225 Difference]: With dead ends: 44 [2024-10-11 17:48:18,557 INFO L226 Difference]: Without dead ends: 41 [2024-10-11 17:48:18,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:48:18,559 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:18,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-11 17:48:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-11 17:48:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 2.0) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2024-10-11 17:48:18,566 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 7 [2024-10-11 17:48:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:18,566 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2024-10-11 17:48:18,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) 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) [2024-10-11 17:48:18,567 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2024-10-11 17:48:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 17:48:18,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:18,568 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:18,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:48:18,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:18,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1154693743, now seen corresponding path program 1 times [2024-10-11 17:48:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:18,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791014531] [2024-10-11 17:48:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791014531] [2024-10-11 17:48:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791014531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:18,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:18,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:48:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110073686] [2024-10-11 17:48:18,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:18,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:48:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:48:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:48:18,782 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:18,834 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2024-10-11 17:48:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:48:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 17:48:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:18,835 INFO L225 Difference]: With dead ends: 39 [2024-10-11 17:48:18,839 INFO L226 Difference]: Without dead ends: 39 [2024-10-11 17:48:18,839 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 [2024-10-11 17:48:18,840 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:18,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 51 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-11 17:48:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-11 17:48:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-10-11 17:48:18,848 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 7 [2024-10-11 17:48:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:18,849 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-10-11 17:48:18,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-10-11 17:48:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 17:48:18,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:18,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:18,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 17:48:18,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:18,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:18,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1154693742, now seen corresponding path program 1 times [2024-10-11 17:48:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:18,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230496886] [2024-10-11 17:48:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:18,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:19,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230496886] [2024-10-11 17:48:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230496886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:48:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812751195] [2024-10-11 17:48:19,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:19,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 17:48:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 17:48:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:48:19,196 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:19,325 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-10-11 17:48:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:48:19,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 17:48:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:19,327 INFO L225 Difference]: With dead ends: 41 [2024-10-11 17:48:19,327 INFO L226 Difference]: Without dead ends: 41 [2024-10-11 17:48:19,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 17:48:19,328 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:19,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 100 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-11 17:48:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-11 17:48:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 40 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) [2024-10-11 17:48:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-10-11 17:48:19,339 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 7 [2024-10-11 17:48:19,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:19,339 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-10-11 17:48:19,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-10-11 17:48:19,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 17:48:19,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:19,341 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:19,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 17:48:19,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:19,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1559034223, now seen corresponding path program 1 times [2024-10-11 17:48:19,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755469929] [2024-10-11 17:48:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755469929] [2024-10-11 17:48:19,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755469929] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199540205] [2024-10-11 17:48:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:19,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:19,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:19,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:19,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:48:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:19,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 17:48:19,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:48:19,825 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 [2024-10-11 17:48:19,837 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 [2024-10-11 17:48:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:19,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:20,157 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:48:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:20,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199540205] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:20,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:20,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-11 17:48:20,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548096343] [2024-10-11 17:48:20,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:20,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 17:48:20,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:20,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 17:48:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-11 17:48:20,179 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:20,425 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-10-11 17:48:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:48:20,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-11 17:48:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:20,428 INFO L225 Difference]: With dead ends: 41 [2024-10-11 17:48:20,428 INFO L226 Difference]: Without dead ends: 41 [2024-10-11 17:48:20,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-10-11 17:48:20,429 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 24 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:20,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 164 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-11 17:48:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2024-10-11 17:48:20,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.875) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-10-11 17:48:20,438 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 9 [2024-10-11 17:48:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:20,439 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-10-11 17:48:20,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-10-11 17:48:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 17:48:20,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:20,441 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:20,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:48:20,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:20,646 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:20,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1559174915, now seen corresponding path program 1 times [2024-10-11 17:48:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:20,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097686644] [2024-10-11 17:48:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:20,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:20,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:20,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097686644] [2024-10-11 17:48:20,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097686644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:20,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:20,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 17:48:20,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846530207] [2024-10-11 17:48:20,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:20,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:48:20,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:20,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:48:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:48:20,691 INFO L87 Difference]: Start difference. First operand 38 states and 45 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) [2024-10-11 17:48:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:20,731 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-10-11 17:48:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:48:20,733 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 [2024-10-11 17:48:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:20,734 INFO L225 Difference]: With dead ends: 49 [2024-10-11 17:48:20,734 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 17:48:20,734 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 [2024-10-11 17:48:20,735 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:20,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 96 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 17:48:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2024-10-11 17:48:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 43 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) [2024-10-11 17:48:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-10-11 17:48:20,743 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 9 [2024-10-11 17:48:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:20,743 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-10-11 17:48:20,744 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) [2024-10-11 17:48:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-10-11 17:48:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 17:48:20,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:20,744 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:20,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 17:48:20,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:20,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash 215832447, now seen corresponding path program 1 times [2024-10-11 17:48:20,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30097114] [2024-10-11 17:48:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:20,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30097114] [2024-10-11 17:48:20,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30097114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:20,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:48:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713777591] [2024-10-11 17:48:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:20,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:48:20,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:48:20,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:48:20,789 INFO L87 Difference]: Start difference. First operand 44 states and 53 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) [2024-10-11 17:48:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:20,821 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-10-11 17:48:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:48:20,821 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 [2024-10-11 17:48:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:20,822 INFO L225 Difference]: With dead ends: 42 [2024-10-11 17:48:20,822 INFO L226 Difference]: Without dead ends: 42 [2024-10-11 17:48:20,822 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 [2024-10-11 17:48:20,824 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:20,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 50 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-11 17:48:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-11 17:48:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.7) internal successors, (51), 41 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) [2024-10-11 17:48:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-10-11 17:48:20,828 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 9 [2024-10-11 17:48:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:20,828 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-10-11 17:48:20,828 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) [2024-10-11 17:48:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-10-11 17:48:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 17:48:20,829 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:20,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:20,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:48:20,831 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:20,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash 215832448, now seen corresponding path program 1 times [2024-10-11 17:48:20,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:20,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504249745] [2024-10-11 17:48:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:20,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:20,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504249745] [2024-10-11 17:48:20,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504249745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:20,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:20,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:48:20,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771528102] [2024-10-11 17:48:20,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:20,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:48:20,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:48:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:20,891 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2024-10-11 17:48:20,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:20,950 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-10-11 17:48:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:48:20,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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 [2024-10-11 17:48:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:20,951 INFO L225 Difference]: With dead ends: 46 [2024-10-11 17:48:20,951 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 17:48:20,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:48:20,952 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 30 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:20,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 97 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 17:48:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-10-11 17:48:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.65625) internal successors, (53), 43 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) [2024-10-11 17:48:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-10-11 17:48:20,956 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 9 [2024-10-11 17:48:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:20,956 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-10-11 17:48:20,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2024-10-11 17:48:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-10-11 17:48:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 17:48:20,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:20,959 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:20,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:48:20,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:20,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1391705151, now seen corresponding path program 1 times [2024-10-11 17:48:20,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:20,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101935135] [2024-10-11 17:48:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:20,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101935135] [2024-10-11 17:48:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101935135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764074572] [2024-10-11 17:48:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:21,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:21,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:21,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:21,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:48:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:21,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 17:48:21,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:21,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:21,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764074572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:21,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:21,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 17:48:21,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893320574] [2024-10-11 17:48:21,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:21,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 17:48:21,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 17:48:21,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-11 17:48:21,252 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:21,423 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-10-11 17:48:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 17:48:21,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-11 17:48:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:21,425 INFO L225 Difference]: With dead ends: 56 [2024-10-11 17:48:21,425 INFO L226 Difference]: Without dead ends: 56 [2024-10-11 17:48:21,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:48:21,426 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 59 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:21,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 106 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-11 17:48:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2024-10-11 17:48:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-10-11 17:48:21,432 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 11 [2024-10-11 17:48:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:21,432 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-10-11 17:48:21,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-10-11 17:48:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-11 17:48:21,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:21,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:21,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 17:48:21,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:21,635 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:21,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash 586212090, now seen corresponding path program 1 times [2024-10-11 17:48:21,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:21,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774936196] [2024-10-11 17:48:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:21,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774936196] [2024-10-11 17:48:21,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774936196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764601453] [2024-10-11 17:48:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:21,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:21,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:21,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:21,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:48:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:21,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 17:48:21,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:21,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:48:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764601453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:21,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:48:21,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-10-11 17:48:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652087449] [2024-10-11 17:48:21,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:21,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 17:48:21,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 17:48:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:48:21,946 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:22,012 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2024-10-11 17:48:22,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:48:22,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-11 17:48:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:22,013 INFO L225 Difference]: With dead ends: 45 [2024-10-11 17:48:22,013 INFO L226 Difference]: Without dead ends: 45 [2024-10-11 17:48:22,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-11 17:48:22,014 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:22,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 71 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-11 17:48:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-11 17:48:22,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 44 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) [2024-10-11 17:48:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-10-11 17:48:22,017 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 12 [2024-10-11 17:48:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:22,017 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-10-11 17:48:22,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-10-11 17:48:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 17:48:22,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:22,018 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:22,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 17:48:22,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:22,219 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:22,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 992705611, now seen corresponding path program 1 times [2024-10-11 17:48:22,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:22,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982741968] [2024-10-11 17:48:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:22,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982741968] [2024-10-11 17:48:22,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982741968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:22,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:22,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:48:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536280778] [2024-10-11 17:48:22,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:22,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:48:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:48:22,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:48:22,318 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:22,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:22,365 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-10-11 17:48:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:48:22,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-11 17:48:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:22,367 INFO L225 Difference]: With dead ends: 50 [2024-10-11 17:48:22,368 INFO L226 Difference]: Without dead ends: 50 [2024-10-11 17:48:22,368 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 [2024-10-11 17:48:22,368 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:22,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 81 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-11 17:48:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-11 17:48:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 49 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) [2024-10-11 17:48:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-10-11 17:48:22,374 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 13 [2024-10-11 17:48:22,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:22,374 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-10-11 17:48:22,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-10-11 17:48:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 17:48:22,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:22,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:22,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 17:48:22,377 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:22,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:22,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1828973886, now seen corresponding path program 2 times [2024-10-11 17:48:22,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460756669] [2024-10-11 17:48:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:22,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460756669] [2024-10-11 17:48:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460756669] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128141889] [2024-10-11 17:48:22,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:48:22,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:22,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:22,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:22,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:48:22,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:48:22,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:22,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 17:48:22,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:22,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-10-11 17:48:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 17:48:22,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:48:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128141889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:48:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-10-11 17:48:22,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486272841] [2024-10-11 17:48:22,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:22,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 17:48:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 17:48:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-11 17:48:22,881 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2024-10-11 17:48:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:23,015 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-10-11 17:48:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:48:23,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 13 [2024-10-11 17:48:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:23,016 INFO L225 Difference]: With dead ends: 49 [2024-10-11 17:48:23,017 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 17:48:23,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-10-11 17:48:23,018 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:23,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 100 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 17:48:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-11 17:48:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-10-11 17:48:23,024 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 13 [2024-10-11 17:48:23,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:23,024 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-10-11 17:48:23,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2024-10-11 17:48:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-10-11 17:48:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 17:48:23,028 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:23,028 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:23,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:48:23,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 17:48:23,229 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:23,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1693770189, now seen corresponding path program 1 times [2024-10-11 17:48:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287020735] [2024-10-11 17:48:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:23,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287020735] [2024-10-11 17:48:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287020735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:23,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:48:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023444046] [2024-10-11 17:48:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:23,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:48:23,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:48:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:23,332 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:23,356 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-10-11 17:48:23,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:48:23,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-11 17:48:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:23,357 INFO L225 Difference]: With dead ends: 48 [2024-10-11 17:48:23,357 INFO L226 Difference]: Without dead ends: 48 [2024-10-11 17:48:23,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:23,358 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:23,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-11 17:48:23,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2024-10-11 17:48:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 42 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) [2024-10-11 17:48:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-10-11 17:48:23,361 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 13 [2024-10-11 17:48:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:23,361 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-10-11 17:48:23,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-10-11 17:48:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 17:48:23,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:23,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:23,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 17:48:23,362 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:23,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:23,363 INFO L85 PathProgramCache]: Analyzing trace with hash 507414319, now seen corresponding path program 1 times [2024-10-11 17:48:23,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:23,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902990709] [2024-10-11 17:48:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:23,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:23,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:23,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902990709] [2024-10-11 17:48:23,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902990709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:23,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:23,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 17:48:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236167131] [2024-10-11 17:48:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:23,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:48:23,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:48:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:23,439 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:23,486 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-10-11 17:48:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:48:23,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-11 17:48:23,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:23,487 INFO L225 Difference]: With dead ends: 40 [2024-10-11 17:48:23,487 INFO L226 Difference]: Without dead ends: 40 [2024-10-11 17:48:23,487 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 [2024-10-11 17:48:23,487 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:23,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 55 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-11 17:48:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-10-11 17:48:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-10-11 17:48:23,489 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 15 [2024-10-11 17:48:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:23,490 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-10-11 17:48:23,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-10-11 17:48:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 17:48:23,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:23,493 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:23,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 17:48:23,493 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:23,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash 507414320, now seen corresponding path program 1 times [2024-10-11 17:48:23,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:23,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510591344] [2024-10-11 17:48:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:23,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:23,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510591344] [2024-10-11 17:48:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510591344] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:23,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926642618] [2024-10-11 17:48:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:23,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:23,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:23,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:23,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:48:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:23,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 17:48:23,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:23,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:23,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-11 17:48:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926642618] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:23,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:23,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-11 17:48:23,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680275686] [2024-10-11 17:48:23,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:23,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:48:23,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:48:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:48:23,842 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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) [2024-10-11 17:48:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:23,961 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-10-11 17:48:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:48:23,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 15 [2024-10-11 17:48:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:23,963 INFO L225 Difference]: With dead ends: 56 [2024-10-11 17:48:23,963 INFO L226 Difference]: Without dead ends: 56 [2024-10-11 17:48:23,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 17:48:23,965 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 56 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:23,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 99 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-11 17:48:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2024-10-11 17:48:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-10-11 17:48:23,968 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 15 [2024-10-11 17:48:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:23,968 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-10-11 17:48:23,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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) [2024-10-11 17:48:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-10-11 17:48:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 17:48:23,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:23,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:23,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 17:48:24,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 17:48:24,169 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:24,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1449980409, now seen corresponding path program 1 times [2024-10-11 17:48:24,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993146663] [2024-10-11 17:48:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:24,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:24,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993146663] [2024-10-11 17:48:24,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993146663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:24,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:24,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 17:48:24,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132762977] [2024-10-11 17:48:24,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:24,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:48:24,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:48:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:48:24,221 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:24,251 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2024-10-11 17:48:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:48:24,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-11 17:48:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:24,252 INFO L225 Difference]: With dead ends: 76 [2024-10-11 17:48:24,252 INFO L226 Difference]: Without dead ends: 76 [2024-10-11 17:48:24,253 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 [2024-10-11 17:48:24,253 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:24,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 78 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-11 17:48:24,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 64. [2024-10-11 17:48:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 63 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) [2024-10-11 17:48:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2024-10-11 17:48:24,256 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 16 [2024-10-11 17:48:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:24,257 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2024-10-11 17:48:24,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:24,257 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2024-10-11 17:48:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 17:48:24,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:24,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:24,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 17:48:24,258 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:24,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:24,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2036786423, now seen corresponding path program 1 times [2024-10-11 17:48:24,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:24,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274542562] [2024-10-11 17:48:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:24,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:24,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:24,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274542562] [2024-10-11 17:48:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274542562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:24,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:24,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 17:48:24,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870365727] [2024-10-11 17:48:24,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:24,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:48:24,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:48:24,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:24,328 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:24,353 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2024-10-11 17:48:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:48:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-11 17:48:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:24,353 INFO L225 Difference]: With dead ends: 69 [2024-10-11 17:48:24,353 INFO L226 Difference]: Without dead ends: 69 [2024-10-11 17:48:24,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:24,354 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:24,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-11 17:48:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 45. [2024-10-11 17:48:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.435897435897436) internal successors, (56), 44 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-10-11 17:48:24,369 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 16 [2024-10-11 17:48:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:24,369 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-10-11 17:48:24,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-10-11 17:48:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 17:48:24,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:24,370 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:24,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 17:48:24,370 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:24,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2001109495, now seen corresponding path program 1 times [2024-10-11 17:48:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938838251] [2024-10-11 17:48:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:24,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938838251] [2024-10-11 17:48:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938838251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171753625] [2024-10-11 17:48:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:24,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:24,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:24,772 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:24,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:48:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:24,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 17:48:24,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:24,978 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 17 treesize of output 13 [2024-10-11 17:48:25,157 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-10-11 17:48:25,158 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 21 treesize of output 10 [2024-10-11 17:48:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:25,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:25,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-11 17:48:25,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-11 17:48:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:25,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171753625] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:25,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:25,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2024-10-11 17:48:25,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137201695] [2024-10-11 17:48:25,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:25,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 17:48:25,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 17:48:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2024-10-11 17:48:25,457 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:26,248 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2024-10-11 17:48:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 17:48:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-11 17:48:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:26,249 INFO L225 Difference]: With dead ends: 84 [2024-10-11 17:48:26,249 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 17:48:26,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=211, Invalid=1349, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 17:48:26,250 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 120 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:26,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 221 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 17:48:26,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 17:48:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2024-10-11 17:48:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2024-10-11 17:48:26,256 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 17 [2024-10-11 17:48:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:26,256 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2024-10-11 17:48:26,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2024-10-11 17:48:26,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 17:48:26,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:26,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:26,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 17:48:26,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 17:48:26,462 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:26,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:26,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1904853691, now seen corresponding path program 1 times [2024-10-11 17:48:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:26,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794170123] [2024-10-11 17:48:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:26,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:26,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794170123] [2024-10-11 17:48:26,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794170123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:26,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:26,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 17:48:26,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260619040] [2024-10-11 17:48:26,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:26,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:48:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:48:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:26,519 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:26,561 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-10-11 17:48:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:48:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-11 17:48:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:26,563 INFO L225 Difference]: With dead ends: 61 [2024-10-11 17:48:26,563 INFO L226 Difference]: Without dead ends: 61 [2024-10-11 17:48:26,563 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 [2024-10-11 17:48:26,563 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:26,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 70 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-11 17:48:26,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-11 17:48:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 60 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) [2024-10-11 17:48:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2024-10-11 17:48:26,566 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 18 [2024-10-11 17:48:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:26,567 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2024-10-11 17:48:26,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2024-10-11 17:48:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 17:48:26,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:26,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:26,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 17:48:26,568 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:26,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1904853690, now seen corresponding path program 1 times [2024-10-11 17:48:26,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:26,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782488540] [2024-10-11 17:48:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:26,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782488540] [2024-10-11 17:48:26,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782488540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:26,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:26,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 17:48:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030695636] [2024-10-11 17:48:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:26,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 17:48:26,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 17:48:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:48:26,740 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:26,808 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-10-11 17:48:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:48:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-11 17:48:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:26,809 INFO L225 Difference]: With dead ends: 63 [2024-10-11 17:48:26,809 INFO L226 Difference]: Without dead ends: 63 [2024-10-11 17:48:26,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:48:26,810 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:26,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 81 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-11 17:48:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-11 17:48:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 62 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2024-10-11 17:48:26,812 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 18 [2024-10-11 17:48:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:26,812 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2024-10-11 17:48:26,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2024-10-11 17:48:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 17:48:26,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:26,816 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:26,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 17:48:26,817 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:26,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:26,818 INFO L85 PathProgramCache]: Analyzing trace with hash -715399903, now seen corresponding path program 2 times [2024-10-11 17:48:26,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:26,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526836131] [2024-10-11 17:48:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526836131] [2024-10-11 17:48:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526836131] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448797782] [2024-10-11 17:48:27,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:48:27,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:27,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:27,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:48:27,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:48:27,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:27,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 17:48:27,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:27,459 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 [2024-10-11 17:48:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:27,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:27,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-11 17:48:27,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-11 17:48:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448797782] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:27,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 28 [2024-10-11 17:48:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836466745] [2024-10-11 17:48:27,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:27,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 17:48:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 17:48:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2024-10-11 17:48:27,735 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 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) [2024-10-11 17:48:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:28,907 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2024-10-11 17:48:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 17:48:28,907 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-11 17:48:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:28,909 INFO L225 Difference]: With dead ends: 163 [2024-10-11 17:48:28,909 INFO L226 Difference]: Without dead ends: 163 [2024-10-11 17:48:28,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=2214, Unknown=0, NotChecked=0, Total=2450 [2024-10-11 17:48:28,910 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 155 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:28,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 716 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 17:48:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-11 17:48:28,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 95. [2024-10-11 17:48:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 94 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 119 transitions. [2024-10-11 17:48:28,914 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 119 transitions. Word has length 21 [2024-10-11 17:48:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:28,914 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 119 transitions. [2024-10-11 17:48:28,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 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) [2024-10-11 17:48:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 119 transitions. [2024-10-11 17:48:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 17:48:28,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:28,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:28,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 17:48:29,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:29,119 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:29,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:29,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1673626827, now seen corresponding path program 1 times [2024-10-11 17:48:29,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:29,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724366047] [2024-10-11 17:48:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:29,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:29,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:29,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724366047] [2024-10-11 17:48:29,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724366047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:29,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:29,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:48:29,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96329044] [2024-10-11 17:48:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:29,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:48:29,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:48:29,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:48:29,254 INFO L87 Difference]: Start difference. First operand 95 states and 119 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:29,277 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2024-10-11 17:48:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:48:29,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-11 17:48:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:29,278 INFO L225 Difference]: With dead ends: 94 [2024-10-11 17:48:29,278 INFO L226 Difference]: Without dead ends: 91 [2024-10-11 17:48:29,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:48:29,279 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:29,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 44 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-11 17:48:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-11 17:48:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.264367816091954) internal successors, (110), 90 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2024-10-11 17:48:29,281 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 23 [2024-10-11 17:48:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:29,282 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2024-10-11 17:48:29,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2024-10-11 17:48:29,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 17:48:29,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:29,282 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] [2024-10-11 17:48:29,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 17:48:29,283 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:29,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:29,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1672577631, now seen corresponding path program 1 times [2024-10-11 17:48:29,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:29,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119829547] [2024-10-11 17:48:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:29,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:29,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119829547] [2024-10-11 17:48:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119829547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:29,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:48:29,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:48:29,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721902698] [2024-10-11 17:48:29,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:29,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:48:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:48:29,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:29,355 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:29,386 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2024-10-11 17:48:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:48:29,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-11 17:48:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:29,387 INFO L225 Difference]: With dead ends: 135 [2024-10-11 17:48:29,387 INFO L226 Difference]: Without dead ends: 106 [2024-10-11 17:48:29,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:48:29,388 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:29,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 91 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:29,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-11 17:48:29,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-10-11 17:48:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 104 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2024-10-11 17:48:29,391 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 23 [2024-10-11 17:48:29,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:29,391 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2024-10-11 17:48:29,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2024-10-11 17:48:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 17:48:29,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:29,392 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:29,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 17:48:29,392 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:29,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1122187144, now seen corresponding path program 1 times [2024-10-11 17:48:29,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:29,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825227692] [2024-10-11 17:48:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825227692] [2024-10-11 17:48:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825227692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566829535] [2024-10-11 17:48:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:29,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:29,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:29,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:29,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:48:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:29,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 17:48:29,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:30,153 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 17 treesize of output 13 [2024-10-11 17:48:30,401 INFO L349 Elim1Store]: treesize reduction 11, result has 47.6 percent of original size [2024-10-11 17:48:30,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 20 [2024-10-11 17:48:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:30,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:30,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-11 17:48:30,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:48:30,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 37 treesize of output 31 [2024-10-11 17:48:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:30,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566829535] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:30,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:30,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 33 [2024-10-11 17:48:30,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505795848] [2024-10-11 17:48:30,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:30,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 17:48:30,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 17:48:30,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 17:48:30,768 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 33 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) [2024-10-11 17:48:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:31,310 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2024-10-11 17:48:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 17:48:31,311 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 33 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 23 [2024-10-11 17:48:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:31,311 INFO L225 Difference]: With dead ends: 135 [2024-10-11 17:48:31,312 INFO L226 Difference]: Without dead ends: 135 [2024-10-11 17:48:31,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 17:48:31,313 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:31,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 254 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:48:31,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-10-11 17:48:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 120. [2024-10-11 17:48:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 119 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) [2024-10-11 17:48:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2024-10-11 17:48:31,317 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 23 [2024-10-11 17:48:31,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:31,317 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2024-10-11 17:48:31,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 33 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) [2024-10-11 17:48:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2024-10-11 17:48:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 17:48:31,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:31,319 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] [2024-10-11 17:48:31,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 17:48:31,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-11 17:48:31,524 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:31,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1804741215, now seen corresponding path program 1 times [2024-10-11 17:48:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082470939] [2024-10-11 17:48:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082470939] [2024-10-11 17:48:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082470939] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4973913] [2024-10-11 17:48:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:31,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:31,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:31,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:31,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 17:48:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:31,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 17:48:31,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:31,804 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 [2024-10-11 17:48:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:31,854 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:48:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4973913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:31,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:48:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-10-11 17:48:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841812823] [2024-10-11 17:48:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:31,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 17:48:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 17:48:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-11 17:48:31,856 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:31,897 INFO L93 Difference]: Finished difference Result 173 states and 197 transitions. [2024-10-11 17:48:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:48:31,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-11 17:48:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:31,898 INFO L225 Difference]: With dead ends: 173 [2024-10-11 17:48:31,898 INFO L226 Difference]: Without dead ends: 141 [2024-10-11 17:48:31,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-11 17:48:31,899 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:31,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 116 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:48:31,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-11 17:48:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 119. [2024-10-11 17:48:31,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.208695652173913) internal successors, (139), 118 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2024-10-11 17:48:31,903 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 23 [2024-10-11 17:48:31,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:31,903 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2024-10-11 17:48:31,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:31,904 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2024-10-11 17:48:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 17:48:31,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:31,904 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] [2024-10-11 17:48:31,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 17:48:32,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:32,109 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:32,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:32,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2067524255, now seen corresponding path program 1 times [2024-10-11 17:48:32,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:32,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769776075] [2024-10-11 17:48:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:32,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769776075] [2024-10-11 17:48:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769776075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243419300] [2024-10-11 17:48:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:32,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:32,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:32,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:32,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 17:48:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:32,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:48:32,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:32,383 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 [2024-10-11 17:48:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:32,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:48:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243419300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:48:32,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:48:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2024-10-11 17:48:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426142902] [2024-10-11 17:48:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:48:32,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 17:48:32,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 17:48:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:48:32,430 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:32,494 INFO L93 Difference]: Finished difference Result 172 states and 197 transitions. [2024-10-11 17:48:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:48:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-11 17:48:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:32,496 INFO L225 Difference]: With dead ends: 172 [2024-10-11 17:48:32,496 INFO L226 Difference]: Without dead ends: 142 [2024-10-11 17:48:32,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-10-11 17:48:32,497 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:32,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 147 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-11 17:48:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2024-10-11 17:48:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 115 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 137 transitions. [2024-10-11 17:48:32,501 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 137 transitions. Word has length 23 [2024-10-11 17:48:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:32,501 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 137 transitions. [2024-10-11 17:48:32,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 137 transitions. [2024-10-11 17:48:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 17:48:32,502 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:32,502 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:32,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 17:48:32,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 17:48:32,707 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:32,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 443776697, now seen corresponding path program 3 times [2024-10-11 17:48:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:32,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483314285] [2024-10-11 17:48:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:33,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:33,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483314285] [2024-10-11 17:48:33,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483314285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:33,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288631049] [2024-10-11 17:48:33,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 17:48:33,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:33,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:33,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:33,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 17:48:33,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 17:48:33,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:33,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 17:48:33,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:33,427 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 [2024-10-11 17:48:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:33,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:33,554 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 18 treesize of output 16 [2024-10-11 17:48:33,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-11 17:48:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:33,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288631049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:33,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:33,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 33 [2024-10-11 17:48:33,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212367730] [2024-10-11 17:48:33,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:33,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 17:48:33,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:33,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 17:48:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 17:48:33,748 INFO L87 Difference]: Start difference. First operand 116 states and 137 transitions. Second operand has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:34,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:34,867 INFO L93 Difference]: Finished difference Result 224 states and 253 transitions. [2024-10-11 17:48:34,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-11 17:48:34,868 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-11 17:48:34,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:34,869 INFO L225 Difference]: With dead ends: 224 [2024-10-11 17:48:34,869 INFO L226 Difference]: Without dead ends: 189 [2024-10-11 17:48:34,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=293, Invalid=3247, Unknown=0, NotChecked=0, Total=3540 [2024-10-11 17:48:34,871 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 126 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:34,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 670 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 17:48:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-11 17:48:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 134. [2024-10-11 17:48:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.2076923076923076) internal successors, (157), 133 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2024-10-11 17:48:34,875 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 25 [2024-10-11 17:48:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:34,875 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2024-10-11 17:48:34,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2024-10-11 17:48:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 17:48:34,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:34,876 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:34,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 17:48:35,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 17:48:35,080 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:35,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:35,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1133630736, now seen corresponding path program 2 times [2024-10-11 17:48:35,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:35,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209095528] [2024-10-11 17:48:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:35,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209095528] [2024-10-11 17:48:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209095528] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275650055] [2024-10-11 17:48:35,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:48:35,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:35,868 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:35,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 17:48:35,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:48:35,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:35,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-11 17:48:35,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:36,111 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 17 treesize of output 13 [2024-10-11 17:48:36,760 INFO L349 Elim1Store]: treesize reduction 15, result has 51.6 percent of original size [2024-10-11 17:48:36,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 30 [2024-10-11 17:48:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 11 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:36,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:37,720 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 53 treesize of output 47 [2024-10-11 17:48:37,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:48:37,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 46 [2024-10-11 17:48:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:37,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275650055] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:37,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:37,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 40 [2024-10-11 17:48:37,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123320180] [2024-10-11 17:48:37,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:37,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-11 17:48:37,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:37,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-11 17:48:37,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1398, Unknown=3, NotChecked=0, Total=1560 [2024-10-11 17:48:37,985 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:39,055 INFO L93 Difference]: Finished difference Result 187 states and 215 transitions. [2024-10-11 17:48:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 17:48:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 17:48:39,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:39,056 INFO L225 Difference]: With dead ends: 187 [2024-10-11 17:48:39,056 INFO L226 Difference]: Without dead ends: 175 [2024-10-11 17:48:39,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=366, Invalid=2710, Unknown=4, NotChecked=0, Total=3080 [2024-10-11 17:48:39,058 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 139 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:39,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 266 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:48:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-11 17:48:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2024-10-11 17:48:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.2127659574468086) internal successors, (171), 144 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2024-10-11 17:48:39,062 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 27 [2024-10-11 17:48:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:39,062 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2024-10-11 17:48:39,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2024-10-11 17:48:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 17:48:39,063 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:39,063 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:39,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 17:48:39,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 17:48:39,263 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:39,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:39,264 INFO L85 PathProgramCache]: Analyzing trace with hash 500723026, now seen corresponding path program 1 times [2024-10-11 17:48:39,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:39,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162958117] [2024-10-11 17:48:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:39,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 17:48:39,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:39,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162958117] [2024-10-11 17:48:39,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162958117] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360823312] [2024-10-11 17:48:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:39,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:39,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:39,498 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:39,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 17:48:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:39,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:48:39,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 17:48:39,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:39,802 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 [2024-10-11 17:48:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 17:48:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360823312] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:39,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:39,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-10-11 17:48:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974001443] [2024-10-11 17:48:39,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:39,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 17:48:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:39,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 17:48:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:48:39,830 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 21 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) [2024-10-11 17:48:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:39,968 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2024-10-11 17:48:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 17:48:39,969 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 17:48:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:39,969 INFO L225 Difference]: With dead ends: 167 [2024-10-11 17:48:39,969 INFO L226 Difference]: Without dead ends: 167 [2024-10-11 17:48:39,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:48:39,970 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:39,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 171 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:48:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-11 17:48:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2024-10-11 17:48:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.1923076923076923) internal successors, (186), 159 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) [2024-10-11 17:48:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 186 transitions. [2024-10-11 17:48:39,973 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 186 transitions. Word has length 27 [2024-10-11 17:48:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:39,974 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 186 transitions. [2024-10-11 17:48:39,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 21 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) [2024-10-11 17:48:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 186 transitions. [2024-10-11 17:48:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 17:48:39,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:39,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:39,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 17:48:40,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 17:48:40,179 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:40,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash 238125777, now seen corresponding path program 4 times [2024-10-11 17:48:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:40,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645846704] [2024-10-11 17:48:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:40,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:40,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645846704] [2024-10-11 17:48:40,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645846704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:40,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179126165] [2024-10-11 17:48:40,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 17:48:40,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:40,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:40,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:40,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 17:48:40,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 17:48:40,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:40,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-11 17:48:40,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:41,021 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 [2024-10-11 17:48:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:41,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:41,188 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 18 treesize of output 16 [2024-10-11 17:48:41,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-11 17:48:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179126165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:41,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2024-10-11 17:48:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643520811] [2024-10-11 17:48:41,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:41,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-11 17:48:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-11 17:48:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1304, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 17:48:41,365 INFO L87 Difference]: Start difference. First operand 160 states and 186 transitions. Second operand has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 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) [2024-10-11 17:48:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:42,982 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2024-10-11 17:48:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-11 17:48:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 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) Word has length 29 [2024-10-11 17:48:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:42,984 INFO L225 Difference]: With dead ends: 296 [2024-10-11 17:48:42,984 INFO L226 Difference]: Without dead ends: 257 [2024-10-11 17:48:42,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=355, Invalid=4475, Unknown=0, NotChecked=0, Total=4830 [2024-10-11 17:48:42,985 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 146 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:42,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 906 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 17:48:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-10-11 17:48:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 183. [2024-10-11 17:48:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.1787709497206704) internal successors, (211), 182 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 211 transitions. [2024-10-11 17:48:42,990 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 211 transitions. Word has length 29 [2024-10-11 17:48:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:42,990 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 211 transitions. [2024-10-11 17:48:42,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 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) [2024-10-11 17:48:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 211 transitions. [2024-10-11 17:48:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 17:48:42,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:42,991 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:43,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 17:48:43,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:43,191 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:43,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash 696132648, now seen corresponding path program 3 times [2024-10-11 17:48:43,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:43,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350197045] [2024-10-11 17:48:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350197045] [2024-10-11 17:48:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350197045] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792650888] [2024-10-11 17:48:44,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 17:48:44,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:44,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:44,121 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:44,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 17:48:44,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 17:48:44,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:44,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-11 17:48:44,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:44,536 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 16 treesize of output 12 [2024-10-11 17:48:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:44,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:45,062 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 71 treesize of output 63 [2024-10-11 17:48:45,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:48:45,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 61 [2024-10-11 17:48:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:45,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792650888] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:45,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:45,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 47 [2024-10-11 17:48:45,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063562515] [2024-10-11 17:48:45,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:45,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-11 17:48:45,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:45,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-11 17:48:45,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2024-10-11 17:48:45,490 INFO L87 Difference]: Start difference. First operand 183 states and 211 transitions. Second operand has 47 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 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) [2024-10-11 17:48:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:46,461 INFO L93 Difference]: Finished difference Result 258 states and 293 transitions. [2024-10-11 17:48:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 17:48:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 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) Word has length 31 [2024-10-11 17:48:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:46,463 INFO L225 Difference]: With dead ends: 258 [2024-10-11 17:48:46,463 INFO L226 Difference]: Without dead ends: 244 [2024-10-11 17:48:46,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=437, Invalid=3985, Unknown=0, NotChecked=0, Total=4422 [2024-10-11 17:48:46,464 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 168 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:46,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 331 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 17:48:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-10-11 17:48:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 194. [2024-10-11 17:48:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.1842105263157894) internal successors, (225), 193 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 225 transitions. [2024-10-11 17:48:46,469 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 225 transitions. Word has length 31 [2024-10-11 17:48:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:46,469 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 225 transitions. [2024-10-11 17:48:46,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 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) [2024-10-11 17:48:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 225 transitions. [2024-10-11 17:48:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 17:48:46,469 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:46,470 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:46,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 17:48:46,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:46,670 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:46,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:46,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1464104213, now seen corresponding path program 2 times [2024-10-11 17:48:46,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:46,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575557889] [2024-10-11 17:48:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 17:48:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:46,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575557889] [2024-10-11 17:48:46,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575557889] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:46,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654659710] [2024-10-11 17:48:46,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:48:46,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:46,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:46,860 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:46,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 17:48:46,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:48:46,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:46,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-11 17:48:46,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:47,119 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 [2024-10-11 17:48:47,346 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:48:47,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:48:47,349 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 [2024-10-11 17:48:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:47,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:47,569 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 [2024-10-11 17:48:47,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-11 17:48:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:47,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654659710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:47,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:47,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 35 [2024-10-11 17:48:47,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810360404] [2024-10-11 17:48:47,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:47,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 17:48:47,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:47,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 17:48:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 17:48:47,865 INFO L87 Difference]: Start difference. First operand 194 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:48,488 INFO L93 Difference]: Finished difference Result 239 states and 270 transitions. [2024-10-11 17:48:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-11 17:48:48,488 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-11 17:48:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:48,489 INFO L225 Difference]: With dead ends: 239 [2024-10-11 17:48:48,489 INFO L226 Difference]: Without dead ends: 217 [2024-10-11 17:48:48,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=366, Invalid=2714, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 17:48:48,490 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:48,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 309 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:48:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-10-11 17:48:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 186. [2024-10-11 17:48:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.1813186813186813) internal successors, (215), 185 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 215 transitions. [2024-10-11 17:48:48,494 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 215 transitions. Word has length 32 [2024-10-11 17:48:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:48,494 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 215 transitions. [2024-10-11 17:48:48,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 215 transitions. [2024-10-11 17:48:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 17:48:48,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:48,494 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:48,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 17:48:48,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-11 17:48:48,695 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:48,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:48,695 INFO L85 PathProgramCache]: Analyzing trace with hash 488573289, now seen corresponding path program 5 times [2024-10-11 17:48:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:48,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073579808] [2024-10-11 17:48:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:48,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073579808] [2024-10-11 17:48:49,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073579808] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381580583] [2024-10-11 17:48:49,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 17:48:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:49,330 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:49,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 17:48:49,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-11 17:48:49,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:49,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-11 17:48:49,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:49,636 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 [2024-10-11 17:48:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:49,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:49,840 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 18 treesize of output 16 [2024-10-11 17:48:49,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-11 17:48:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:50,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381580583] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:50,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:50,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 43 [2024-10-11 17:48:50,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122954065] [2024-10-11 17:48:50,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:50,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-11 17:48:50,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-11 17:48:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 17:48:50,078 INFO L87 Difference]: Start difference. First operand 186 states and 215 transitions. Second operand has 43 states, 43 states have (on average 1.8372093023255813) internal successors, (79), 43 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:52,036 INFO L93 Difference]: Finished difference Result 341 states and 379 transitions. [2024-10-11 17:48:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-11 17:48:52,036 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.8372093023255813) internal successors, (79), 43 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-11 17:48:52,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:52,037 INFO L225 Difference]: With dead ends: 341 [2024-10-11 17:48:52,037 INFO L226 Difference]: Without dead ends: 298 [2024-10-11 17:48:52,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=424, Invalid=5896, Unknown=0, NotChecked=0, Total=6320 [2024-10-11 17:48:52,039 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 168 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:52,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1167 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 17:48:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-11 17:48:52,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 209. [2024-10-11 17:48:52,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.170731707317073) internal successors, (240), 208 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 240 transitions. [2024-10-11 17:48:52,043 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 240 transitions. Word has length 33 [2024-10-11 17:48:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:52,043 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 240 transitions. [2024-10-11 17:48:52,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.8372093023255813) internal successors, (79), 43 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 240 transitions. [2024-10-11 17:48:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 17:48:52,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:52,044 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:52,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 17:48:52,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:52,245 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:52,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 278458614, now seen corresponding path program 3 times [2024-10-11 17:48:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:52,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379293138] [2024-10-11 17:48:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:52,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:52,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379293138] [2024-10-11 17:48:52,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379293138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:52,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009373708] [2024-10-11 17:48:52,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 17:48:52,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:52,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:52,517 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:52,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 17:48:52,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 17:48:52,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:52,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 17:48:52,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:52,666 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 [2024-10-11 17:48:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 17:48:52,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:52,746 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 [2024-10-11 17:48:52,748 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 [2024-10-11 17:48:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 17:48:52,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009373708] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:52,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2024-10-11 17:48:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619685802] [2024-10-11 17:48:52,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:52,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 17:48:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 17:48:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-10-11 17:48:52,791 INFO L87 Difference]: Start difference. First operand 209 states and 240 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 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) [2024-10-11 17:48:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:53,306 INFO L93 Difference]: Finished difference Result 434 states and 474 transitions. [2024-10-11 17:48:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-11 17:48:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 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) Word has length 34 [2024-10-11 17:48:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:53,307 INFO L225 Difference]: With dead ends: 434 [2024-10-11 17:48:53,307 INFO L226 Difference]: Without dead ends: 320 [2024-10-11 17:48:53,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=271, Invalid=2279, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 17:48:53,309 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 68 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:53,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 317 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:48:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-11 17:48:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 251. [2024-10-11 17:48:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 247 states have (on average 1.1578947368421053) internal successors, (286), 250 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 286 transitions. [2024-10-11 17:48:53,315 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 286 transitions. Word has length 34 [2024-10-11 17:48:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:53,315 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 286 transitions. [2024-10-11 17:48:53,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 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) [2024-10-11 17:48:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 286 transitions. [2024-10-11 17:48:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 17:48:53,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:53,316 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:53,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 17:48:53,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-11 17:48:53,517 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:53,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1642255808, now seen corresponding path program 4 times [2024-10-11 17:48:53,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:53,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771577945] [2024-10-11 17:48:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:53,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:54,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771577945] [2024-10-11 17:48:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771577945] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450240828] [2024-10-11 17:48:54,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 17:48:54,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:54,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:54,646 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:54,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 17:48:54,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 17:48:54,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:54,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-11 17:48:54,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:54,959 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 17 treesize of output 13 [2024-10-11 17:48:55,590 INFO L349 Elim1Store]: treesize reduction 23, result has 54.9 percent of original size [2024-10-11 17:48:55,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 50 [2024-10-11 17:48:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:55,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:55,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 79 [2024-10-11 17:48:55,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 76 [2024-10-11 17:48:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:48:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450240828] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:56,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2024-10-11 17:48:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030278231] [2024-10-11 17:48:56,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:56,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-11 17:48:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-11 17:48:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2282, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 17:48:56,271 INFO L87 Difference]: Start difference. First operand 251 states and 286 transitions. Second operand has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:48:57,466 INFO L93 Difference]: Finished difference Result 344 states and 386 transitions. [2024-10-11 17:48:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 17:48:57,467 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-11 17:48:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:48:57,468 INFO L225 Difference]: With dead ends: 344 [2024-10-11 17:48:57,468 INFO L226 Difference]: Without dead ends: 314 [2024-10-11 17:48:57,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=481, Invalid=4349, Unknown=0, NotChecked=0, Total=4830 [2024-10-11 17:48:57,469 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 81 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 17:48:57,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 405 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 17:48:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-10-11 17:48:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 264. [2024-10-11 17:48:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 260 states have (on average 1.1615384615384616) internal successors, (302), 263 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 302 transitions. [2024-10-11 17:48:57,476 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 302 transitions. Word has length 35 [2024-10-11 17:48:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:48:57,476 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 302 transitions. [2024-10-11 17:48:57,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:48:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 302 transitions. [2024-10-11 17:48:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 17:48:57,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:48:57,477 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:48:57,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-11 17:48:57,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:57,678 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:48:57,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:48:57,678 INFO L85 PathProgramCache]: Analyzing trace with hash 605893249, now seen corresponding path program 6 times [2024-10-11 17:48:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:48:57,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20385113] [2024-10-11 17:48:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:48:57,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:48:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:48:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:48:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20385113] [2024-10-11 17:48:58,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20385113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:48:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753934337] [2024-10-11 17:48:58,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 17:48:58,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:48:58,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:48:58,320 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:48:58,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 17:48:58,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-11 17:48:58,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:48:58,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-10-11 17:48:58,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:48:58,670 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 [2024-10-11 17:48:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:58,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:48:58,888 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 18 treesize of output 16 [2024-10-11 17:48:58,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-11 17:48:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:48:59,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753934337] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:48:59,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:48:59,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 48 [2024-10-11 17:48:59,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65417736] [2024-10-11 17:48:59,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:48:59,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-11 17:48:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:48:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-11 17:48:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2122, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 17:48:59,147 INFO L87 Difference]: Start difference. First operand 264 states and 302 transitions. Second operand has 48 states, 48 states have (on average 1.8541666666666667) internal successors, (89), 48 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:01,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:49:01,319 INFO L93 Difference]: Finished difference Result 458 states and 507 transitions. [2024-10-11 17:49:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-11 17:49:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8541666666666667) internal successors, (89), 48 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-11 17:49:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:49:01,321 INFO L225 Difference]: With dead ends: 458 [2024-10-11 17:49:01,321 INFO L226 Difference]: Without dead ends: 403 [2024-10-11 17:49:01,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=500, Invalid=7510, Unknown=0, NotChecked=0, Total=8010 [2024-10-11 17:49:01,324 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 189 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:49:01,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1417 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 17:49:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-10-11 17:49:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 289. [2024-10-11 17:49:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 1.1543859649122807) internal successors, (329), 288 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 329 transitions. [2024-10-11 17:49:01,333 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 329 transitions. Word has length 37 [2024-10-11 17:49:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:49:01,334 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 329 transitions. [2024-10-11 17:49:01,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.8541666666666667) internal successors, (89), 48 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 329 transitions. [2024-10-11 17:49:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 17:49:01,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:49:01,338 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:49:01,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-11 17:49:01,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-11 17:49:01,539 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:49:01,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:49:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -373414171, now seen corresponding path program 4 times [2024-10-11 17:49:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:49:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099236021] [2024-10-11 17:49:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:01,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:49:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 17:49:01,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:49:01,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099236021] [2024-10-11 17:49:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099236021] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:49:01,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392432766] [2024-10-11 17:49:01,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 17:49:01,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:01,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:49:01,856 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:49:01,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 17:49:02,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 17:49:02,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:49:02,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-11 17:49:02,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:49:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 17:49:02,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:49:02,300 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 [2024-10-11 17:49:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 17:49:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392432766] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:49:02,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:49:02,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-10-11 17:49:02,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417960481] [2024-10-11 17:49:02,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:49:02,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 17:49:02,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:49:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 17:49:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2024-10-11 17:49:02,411 INFO L87 Difference]: Start difference. First operand 289 states and 329 transitions. Second operand has 27 states, 26 states have (on average 3.0) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:49:02,655 INFO L93 Difference]: Finished difference Result 352 states and 392 transitions. [2024-10-11 17:49:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 17:49:02,656 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.0) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-11 17:49:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:49:02,656 INFO L225 Difference]: With dead ends: 352 [2024-10-11 17:49:02,656 INFO L226 Difference]: Without dead ends: 352 [2024-10-11 17:49:02,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2024-10-11 17:49:02,657 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:49:02,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 233 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:49:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-10-11 17:49:02,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 315. [2024-10-11 17:49:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 311 states have (on average 1.144694533762058) internal successors, (356), 314 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 356 transitions. [2024-10-11 17:49:02,662 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 356 transitions. Word has length 38 [2024-10-11 17:49:02,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:49:02,662 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 356 transitions. [2024-10-11 17:49:02,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.0) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 356 transitions. [2024-10-11 17:49:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 17:49:02,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:49:02,663 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:49:02,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-11 17:49:02,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-11 17:49:02,863 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:49:02,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:49:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2048461272, now seen corresponding path program 5 times [2024-10-11 17:49:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:49:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520404545] [2024-10-11 17:49:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:49:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:49:04,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:49:04,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520404545] [2024-10-11 17:49:04,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520404545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:49:04,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678043866] [2024-10-11 17:49:04,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 17:49:04,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:04,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:49:04,139 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:49:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-11 17:49:04,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-10-11 17:49:04,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:49:04,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-10-11 17:49:04,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:49:04,657 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 17 treesize of output 13 [2024-10-11 17:49:13,771 INFO L349 Elim1Store]: treesize reduction 27, result has 55.7 percent of original size [2024-10-11 17:49:13,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 71 treesize of output 60 [2024-10-11 17:49:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 41 refuted. 9 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:49:13,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:49:14,565 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 107 treesize of output 95 [2024-10-11 17:49:14,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:49:14,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 91 [2024-10-11 17:49:15,181 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-10-11 17:49:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:49:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678043866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:49:15,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:49:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 26] total 63 [2024-10-11 17:49:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294447560] [2024-10-11 17:49:15,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:49:15,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-11 17:49:15,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:49:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-11 17:49:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=3535, Unknown=11, NotChecked=0, Total=3906 [2024-10-11 17:49:15,245 INFO L87 Difference]: Start difference. First operand 315 states and 356 transitions. Second operand has 63 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 63 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:18,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:49:18,322 INFO L93 Difference]: Finished difference Result 442 states and 494 transitions. [2024-10-11 17:49:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 17:49:18,322 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 63 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-11 17:49:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:49:18,323 INFO L225 Difference]: With dead ends: 442 [2024-10-11 17:49:18,323 INFO L226 Difference]: Without dead ends: 408 [2024-10-11 17:49:18,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=822, Invalid=7175, Unknown=13, NotChecked=0, Total=8010 [2024-10-11 17:49:18,325 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 17:49:18,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 574 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 17:49:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-10-11 17:49:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 328. [2024-10-11 17:49:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 324 states have (on average 1.1481481481481481) internal successors, (372), 327 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 372 transitions. [2024-10-11 17:49:18,330 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 372 transitions. Word has length 39 [2024-10-11 17:49:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:49:18,334 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 372 transitions. [2024-10-11 17:49:18,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 63 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 372 transitions. [2024-10-11 17:49:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 17:49:18,335 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:49:18,335 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:49:18,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-11 17:49:18,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-11 17:49:18,536 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:49:18,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:49:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1243887396, now seen corresponding path program 1 times [2024-10-11 17:49:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:49:18,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317919503] [2024-10-11 17:49:18,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:18,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:49:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 17:49:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:49:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317919503] [2024-10-11 17:49:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317919503] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:49:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633394733] [2024-10-11 17:49:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:18,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:49:18,772 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:49:18,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-11 17:49:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:18,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-11 17:49:18,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:49:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 17:49:19,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:49:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 17:49:19,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633394733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:49:19,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:49:19,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 35 [2024-10-11 17:49:19,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679513996] [2024-10-11 17:49:19,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:49:19,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 17:49:19,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:49:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 17:49:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 17:49:19,418 INFO L87 Difference]: Start difference. First operand 328 states and 372 transitions. Second operand has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:49:19,940 INFO L93 Difference]: Finished difference Result 371 states and 414 transitions. [2024-10-11 17:49:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 17:49:19,940 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-11 17:49:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:49:19,941 INFO L225 Difference]: With dead ends: 371 [2024-10-11 17:49:19,942 INFO L226 Difference]: Without dead ends: 350 [2024-10-11 17:49:19,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=627, Invalid=2565, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 17:49:19,943 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 124 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:49:19,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 215 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:49:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-10-11 17:49:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 307. [2024-10-11 17:49:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 303 states have (on average 1.1518151815181519) internal successors, (349), 306 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 349 transitions. [2024-10-11 17:49:19,947 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 349 transitions. Word has length 39 [2024-10-11 17:49:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:49:19,948 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 349 transitions. [2024-10-11 17:49:19,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 349 transitions. [2024-10-11 17:49:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 17:49:19,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:49:19,948 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:49:19,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-11 17:49:20,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:20,149 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:49:20,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:49:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1436213735, now seen corresponding path program 7 times [2024-10-11 17:49:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:49:20,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474568615] [2024-10-11 17:49:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:49:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 25 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:49:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:49:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474568615] [2024-10-11 17:49:20,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474568615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:49:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151551879] [2024-10-11 17:49:20,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 17:49:20,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:49:20,919 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:49:20,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-11 17:49:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:21,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-11 17:49:21,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:49:21,334 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 [2024-10-11 17:49:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:49:21,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:49:21,626 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 18 treesize of output 16 [2024-10-11 17:49:21,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-11 17:49:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:49:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151551879] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:49:22,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:49:22,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 53 [2024-10-11 17:49:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722218218] [2024-10-11 17:49:22,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:49:22,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-11 17:49:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:49:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-11 17:49:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2606, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 17:49:22,062 INFO L87 Difference]: Start difference. First operand 307 states and 349 transitions. Second operand has 53 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 53 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) [2024-10-11 17:49:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:49:24,889 INFO L93 Difference]: Finished difference Result 545 states and 600 transitions. [2024-10-11 17:49:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-10-11 17:49:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 53 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 41 [2024-10-11 17:49:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:49:24,891 INFO L225 Difference]: With dead ends: 545 [2024-10-11 17:49:24,891 INFO L226 Difference]: Without dead ends: 486 [2024-10-11 17:49:24,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2082 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=580, Invalid=9320, Unknown=0, NotChecked=0, Total=9900 [2024-10-11 17:49:24,892 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 200 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:49:24,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1633 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3265 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-11 17:49:24,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-10-11 17:49:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 337. [2024-10-11 17:49:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 1.1441441441441442) internal successors, (381), 336 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 381 transitions. [2024-10-11 17:49:24,896 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 381 transitions. Word has length 41 [2024-10-11 17:49:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:49:24,897 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 381 transitions. [2024-10-11 17:49:24,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 53 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) [2024-10-11 17:49:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 381 transitions. [2024-10-11 17:49:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 17:49:24,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:49:24,898 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:49:24,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-11 17:49:25,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-11 17:49:25,099 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:49:25,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:49:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1406263408, now seen corresponding path program 6 times [2024-10-11 17:49:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:49:25,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108766535] [2024-10-11 17:49:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:25,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:49:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:49:26,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:49:26,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108766535] [2024-10-11 17:49:26,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108766535] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:49:26,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888465166] [2024-10-11 17:49:26,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 17:49:26,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:26,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:49:26,659 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:49:26,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-11 17:49:26,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-10-11 17:49:26,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:49:26,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-10-11 17:49:26,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:49:27,221 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 16 treesize of output 12 [2024-10-11 17:49:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 91 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:49:28,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:49:28,484 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 125 treesize of output 111 [2024-10-11 17:49:28,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:49:28,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 106 [2024-10-11 17:49:29,290 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-10-11 17:49:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 63 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:49:29,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888465166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:49:29,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:49:29,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 68 [2024-10-11 17:49:29,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552502855] [2024-10-11 17:49:29,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:49:29,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-11 17:49:29,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:49:29,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-11 17:49:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2024-10-11 17:49:29,384 INFO L87 Difference]: Start difference. First operand 337 states and 381 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:49:31,624 INFO L93 Difference]: Finished difference Result 509 states and 569 transitions. [2024-10-11 17:49:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-11 17:49:31,624 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-11 17:49:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:49:31,626 INFO L225 Difference]: With dead ends: 509 [2024-10-11 17:49:31,626 INFO L226 Difference]: Without dead ends: 468 [2024-10-11 17:49:31,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3564 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1065, Invalid=11367, Unknown=0, NotChecked=0, Total=12432 [2024-10-11 17:49:31,627 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 272 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 17:49:31,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 747 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 17:49:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-10-11 17:49:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 350. [2024-10-11 17:49:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 346 states have (on average 1.1473988439306357) internal successors, (397), 349 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 397 transitions. [2024-10-11 17:49:31,633 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 397 transitions. Word has length 43 [2024-10-11 17:49:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:49:31,634 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 397 transitions. [2024-10-11 17:49:31,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 397 transitions. [2024-10-11 17:49:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 17:49:31,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:49:31,635 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:49:31,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-11 17:49:31,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:31,836 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:49:31,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:49:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash -572342430, now seen corresponding path program 5 times [2024-10-11 17:49:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:49:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986324176] [2024-10-11 17:49:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:49:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 17:49:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:49:32,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986324176] [2024-10-11 17:49:32,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986324176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:49:32,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494373167] [2024-10-11 17:49:32,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 17:49:32,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:32,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:49:32,089 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:49:32,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-11 17:49:32,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-11 17:49:32,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:49:32,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 17:49:32,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:49:32,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-10-11 17:49:32,304 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 [2024-10-11 17:49:32,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:49:32,521 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 [2024-10-11 17:49:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 17:49:32,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:49:32,868 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 [2024-10-11 17:49:32,871 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 [2024-10-11 17:49:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 17:49:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494373167] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:49:33,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:49:33,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2024-10-11 17:49:33,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401086225] [2024-10-11 17:49:33,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:49:33,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-11 17:49:33,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:49:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-11 17:49:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 17:49:33,080 INFO L87 Difference]: Start difference. First operand 350 states and 397 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 40 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:49:34,299 INFO L93 Difference]: Finished difference Result 504 states and 549 transitions. [2024-10-11 17:49:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-11 17:49:34,300 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 40 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-11 17:49:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:49:34,301 INFO L225 Difference]: With dead ends: 504 [2024-10-11 17:49:34,301 INFO L226 Difference]: Without dead ends: 474 [2024-10-11 17:49:34,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=562, Invalid=5138, Unknown=0, NotChecked=0, Total=5700 [2024-10-11 17:49:34,302 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 87 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:49:34,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 302 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 17:49:34,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-10-11 17:49:34,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 389. [2024-10-11 17:49:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 385 states have (on average 1.135064935064935) internal successors, (437), 388 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:34,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 437 transitions. [2024-10-11 17:49:34,308 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 437 transitions. Word has length 43 [2024-10-11 17:49:34,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:49:34,308 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 437 transitions. [2024-10-11 17:49:34,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 40 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:49:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 437 transitions. [2024-10-11 17:49:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 17:49:34,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:49:34,309 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:49:34,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-11 17:49:34,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:34,510 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-11 17:49:34,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:49:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2021344068, now seen corresponding path program 2 times [2024-10-11 17:49:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:49:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989415933] [2024-10-11 17:49:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:49:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:49:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:49:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:49:35,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:49:35,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989415933] [2024-10-11 17:49:35,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989415933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:49:35,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278423740] [2024-10-11 17:49:35,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:49:35,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:49:35,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:49:35,089 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:49:35,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-11 17:49:35,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:49:35,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:49:35,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-10-11 17:49:35,231 INFO L278 TraceCheckSpWp]: Computing forward predicates...