./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 13:26:03,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 13:26:03,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 13:26:03,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 13:26:03,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 13:26:03,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 13:26:03,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 13:26:03,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 13:26:03,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 13:26:03,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 13:26:03,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 13:26:03,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 13:26:03,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 13:26:03,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 13:26:03,230 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 13:26:03,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 13:26:03,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 13:26:03,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 13:26:03,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 13:26:03,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 13:26:03,232 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 13:26:03,232 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 13:26:03,233 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 13:26:03,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 13:26:03,233 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 13:26:03,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 13:26:03,234 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 13:26:03,234 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 13:26:03,234 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 13:26:03,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 13:26:03,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 13:26:03,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 13:26:03,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 13:26:03,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:26:03,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 13:26:03,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 13:26:03,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 13:26:03,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 13:26:03,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 13:26:03,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 13:26:03,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 13:26:03,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 13:26:03,238 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 [2024-11-12 13:26:03,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 13:26:03,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 13:26:03,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 13:26:03,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 13:26:03,508 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 13:26:03,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2024-11-12 13:26:04,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 13:26:05,054 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 13:26:05,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2024-11-12 13:26:05,060 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba352b6e8/8364e135a4764edc98f4ae68b25d4f19/FLAG08966f148 [2024-11-12 13:26:05,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba352b6e8/8364e135a4764edc98f4ae68b25d4f19 [2024-11-12 13:26:05,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 13:26:05,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 13:26:05,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 13:26:05,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 13:26:05,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 13:26:05,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504640be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05, skipping insertion in model container [2024-11-12 13:26:05,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,096 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 13:26:05,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:26:05,252 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 13:26:05,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:26:05,308 INFO L204 MainTranslator]: Completed translation [2024-11-12 13:26:05,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05 WrapperNode [2024-11-12 13:26:05,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 13:26:05,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 13:26:05,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 13:26:05,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 13:26:05,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,357 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-11-12 13:26:05,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 13:26:05,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 13:26:05,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 13:26:05,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 13:26:05,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,378 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [0, 1]. [2024-11-12 13:26:05,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 13:26:05,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 13:26:05,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 13:26:05,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 13:26:05,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (1/1) ... [2024-11-12 13:26:05,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:26:05,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:05,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 13:26:05,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 13:26:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 13:26:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 13:26:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 13:26:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 13:26:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 13:26:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 13:26:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 13:26:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 13:26:05,522 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 13:26:05,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 13:26:05,652 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-12 13:26:05,652 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 13:26:05,661 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 13:26:05,662 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 13:26:05,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:26:05 BoogieIcfgContainer [2024-11-12 13:26:05,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 13:26:05,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 13:26:05,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 13:26:05,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 13:26:05,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:26:05" (1/3) ... [2024-11-12 13:26:05,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa6fb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:26:05, skipping insertion in model container [2024-11-12 13:26:05,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:26:05" (2/3) ... [2024-11-12 13:26:05,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa6fb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:26:05, skipping insertion in model container [2024-11-12 13:26:05,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:26:05" (3/3) ... [2024-11-12 13:26:05,668 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-write.c [2024-11-12 13:26:05,680 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 13:26:05,681 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-12 13:26:05,715 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 13:26:05,720 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;@2de1c460, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 13:26:05,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-12 13:26:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-12 13:26:05,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:05,729 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 13:26:05,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:05,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2024-11-12 13:26:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514220856] [2024-11-12 13:26:05,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514220856] [2024-11-12 13:26:05,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514220856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:26:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:26:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710267621] [2024-11-12 13:26:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:05,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:26:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:26:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:26:05,978 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:06,025 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-12 13:26:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:26:06,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-11-12 13:26:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:06,032 INFO L225 Difference]: With dead ends: 38 [2024-11-12 13:26:06,032 INFO L226 Difference]: Without dead ends: 36 [2024-11-12 13:26:06,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:26:06,039 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:06,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:26:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-12 13:26:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2024-11-12 13:26:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-12 13:26:06,073 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 5 [2024-11-12 13:26:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:06,074 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-12 13:26:06,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-12 13:26:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-12 13:26:06,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:06,075 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 13:26:06,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 13:26:06,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:06,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:06,076 INFO L85 PathProgramCache]: Analyzing trace with hash 889631015, now seen corresponding path program 1 times [2024-11-12 13:26:06,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:06,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850094311] [2024-11-12 13:26:06,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:06,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:06,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:06,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850094311] [2024-11-12 13:26:06,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850094311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:06,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:26:06,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:26:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217493513] [2024-11-12 13:26:06,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:06,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:26:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:26:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:26:06,137 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:06,181 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-12 13:26:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:26:06,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-12 13:26:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:06,182 INFO L225 Difference]: With dead ends: 53 [2024-11-12 13:26:06,182 INFO L226 Difference]: Without dead ends: 53 [2024-11-12 13:26:06,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:26:06,184 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:06,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:26:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-12 13:26:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2024-11-12 13:26:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.48) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-12 13:26:06,187 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2024-11-12 13:26:06,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:06,188 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-12 13:26:06,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,188 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-12 13:26:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-12 13:26:06,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:06,188 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 13:26:06,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 13:26:06,189 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:06,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2024-11-12 13:26:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:06,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51326098] [2024-11-12 13:26:06,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51326098] [2024-11-12 13:26:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51326098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:06,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:26:06,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:26:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629176355] [2024-11-12 13:26:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:06,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:26:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:26:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:26:06,321 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:06,403 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-11-12 13:26:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:26:06,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-12 13:26:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:06,405 INFO L225 Difference]: With dead ends: 32 [2024-11-12 13:26:06,408 INFO L226 Difference]: Without dead ends: 32 [2024-11-12 13:26:06,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:26:06,409 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:06,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:26:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-12 13:26:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-12 13:26:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-12 13:26:06,414 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2024-11-12 13:26:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:06,418 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-12 13:26:06,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,419 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-12 13:26:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-12 13:26:06,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:06,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 13:26:06,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 13:26:06,420 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:06,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2024-11-12 13:26:06,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:06,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427330466] [2024-11-12 13:26:06,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:06,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:06,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:06,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427330466] [2024-11-12 13:26:06,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427330466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:26:06,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:26:06,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664215678] [2024-11-12 13:26:06,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:06,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:26:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:06,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:26:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:26:06,549 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:06,628 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-12 13:26:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:26:06,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-12 13:26:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:06,629 INFO L225 Difference]: With dead ends: 36 [2024-11-12 13:26:06,629 INFO L226 Difference]: Without dead ends: 36 [2024-11-12 13:26:06,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:26:06,630 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:06,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 31 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:06,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-12 13:26:06,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-12 13:26:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-12 13:26:06,638 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2024-11-12 13:26:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:06,638 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-12 13:26:06,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-12 13:26:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-12 13:26:06,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:06,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:06,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 13:26:06,639 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:06,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2024-11-12 13:26:06,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:06,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759759842] [2024-11-12 13:26:06,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:06,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:06,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:06,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759759842] [2024-11-12 13:26:06,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759759842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:06,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:26:06,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:26:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580844013] [2024-11-12 13:26:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:06,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:26:06,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:26:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:26:06,694 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:06,764 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-12 13:26:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:26:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-12 13:26:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:06,766 INFO L225 Difference]: With dead ends: 55 [2024-11-12 13:26:06,766 INFO L226 Difference]: Without dead ends: 55 [2024-11-12 13:26:06,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:26:06,770 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:06,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-12 13:26:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2024-11-12 13:26:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-12 13:26:06,774 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 7 [2024-11-12 13:26:06,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:06,774 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-12 13:26:06,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-12 13:26:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-12 13:26:06,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:06,779 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:06,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 13:26:06,779 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:06,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:06,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1480744241, now seen corresponding path program 1 times [2024-11-12 13:26:06,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:06,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80348439] [2024-11-12 13:26:06,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:06,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:06,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80348439] [2024-11-12 13:26:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80348439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903267477] [2024-11-12 13:26:06,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:06,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:06,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:06,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:06,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 13:26:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:06,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 13:26:06,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:06,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:06,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903267477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:06,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:06,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-12 13:26:06,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654792404] [2024-11-12 13:26:06,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:06,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 13:26:06,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 13:26:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-12 13:26:06,970 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:07,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:07,041 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2024-11-12 13:26:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:26:07,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-12 13:26:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:07,043 INFO L225 Difference]: With dead ends: 52 [2024-11-12 13:26:07,043 INFO L226 Difference]: Without dead ends: 52 [2024-11-12 13:26:07,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-12 13:26:07,047 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 83 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 [2024-11-12 13:26:07,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 83 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-12 13:26:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-12 13:26:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-12 13:26:07,052 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 10 [2024-11-12 13:26:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:07,052 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-12 13:26:07,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-12 13:26:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 13:26:07,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:07,053 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:07,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 13:26:07,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-12 13:26:07,255 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:07,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1341568839, now seen corresponding path program 1 times [2024-11-12 13:26:07,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:07,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380441679] [2024-11-12 13:26:07,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:07,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:07,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:07,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380441679] [2024-11-12 13:26:07,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380441679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:07,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614529372] [2024-11-12 13:26:07,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:07,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:07,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:07,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:07,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 13:26:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:07,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 13:26:07,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:07,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-12 13:26:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:07,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614529372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:07,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:07,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-12 13:26:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598717385] [2024-11-12 13:26:07,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:07,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 13:26:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 13:26:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-12 13:26:07,709 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:07,828 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-12 13:26:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 13:26:07,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-12 13:26:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:07,829 INFO L225 Difference]: With dead ends: 53 [2024-11-12 13:26:07,830 INFO L226 Difference]: Without dead ends: 53 [2024-11-12 13:26:07,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-12 13:26:07,830 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:07,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 59 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-12 13:26:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-11-12 13:26:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 48 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) [2024-11-12 13:26:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-12 13:26:07,838 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 11 [2024-11-12 13:26:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:07,838 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-12 13:26:07,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-12 13:26:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-12 13:26:07,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:07,838 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:07,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 13:26:08,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-12 13:26:08,040 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:08,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1361088610, now seen corresponding path program 1 times [2024-11-12 13:26:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:08,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831310221] [2024-11-12 13:26:08,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:08,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:08,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:08,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831310221] [2024-11-12 13:26:08,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831310221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:08,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950375876] [2024-11-12 13:26:08,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:08,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:08,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:08,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:08,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 13:26:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:08,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 13:26:08,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:08,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:08,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950375876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:08,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:08,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-12 13:26:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189104637] [2024-11-12 13:26:08,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:08,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 13:26:08,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 13:26:08,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-12 13:26:08,202 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:08,344 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2024-11-12 13:26:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:26:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 12 [2024-11-12 13:26:08,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:08,345 INFO L225 Difference]: With dead ends: 83 [2024-11-12 13:26:08,345 INFO L226 Difference]: Without dead ends: 83 [2024-11-12 13:26:08,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-11-12 13:26:08,346 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 106 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:08,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 31 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-12 13:26:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 48. [2024-11-12 13:26:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2024-11-12 13:26:08,349 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 12 [2024-11-12 13:26:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:08,350 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2024-11-12 13:26:08,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2024-11-12 13:26:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-12 13:26:08,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:08,350 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:08,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 13:26:08,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:08,555 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:08,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash 4840471, now seen corresponding path program 2 times [2024-11-12 13:26:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:08,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962489670] [2024-11-12 13:26:08,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 13:26:08,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962489670] [2024-11-12 13:26:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962489670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:26:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 13:26:08,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204574088] [2024-11-12 13:26:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:08,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 13:26:08,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 13:26:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:26:08,651 INFO L87 Difference]: Start difference. First operand 48 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) [2024-11-12 13:26:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:08,706 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-11-12 13:26:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:26:08,707 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 17 [2024-11-12 13:26:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:08,707 INFO L225 Difference]: With dead ends: 46 [2024-11-12 13:26:08,707 INFO L226 Difference]: Without dead ends: 46 [2024-11-12 13:26:08,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 13:26:08,708 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:08,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-12 13:26:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-12 13:26:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2024-11-12 13:26:08,713 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 17 [2024-11-12 13:26:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:08,713 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2024-11-12 13:26:08,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2024-11-12 13:26:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-12 13:26:08,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:08,714 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:08,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 13:26:08,714 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:08,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:08,714 INFO L85 PathProgramCache]: Analyzing trace with hash 4840472, now seen corresponding path program 1 times [2024-11-12 13:26:08,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:08,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012300195] [2024-11-12 13:26:08,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:08,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:08,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:08,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012300195] [2024-11-12 13:26:08,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012300195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:08,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:26:08,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:26:08,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494591481] [2024-11-12 13:26:08,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:08,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:26:08,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:26:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:26:08,873 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:08,896 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2024-11-12 13:26:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:26:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 17 [2024-11-12 13:26:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:08,897 INFO L225 Difference]: With dead ends: 76 [2024-11-12 13:26:08,897 INFO L226 Difference]: Without dead ends: 76 [2024-11-12 13:26:08,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:26:08,898 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:08,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 35 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:26:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-12 13:26:08,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2024-11-12 13:26:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-11-12 13:26:08,902 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 17 [2024-11-12 13:26:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:08,902 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-11-12 13:26:08,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-11-12 13:26:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-12 13:26:08,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:08,903 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:08,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 13:26:08,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:08,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:08,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1949815299, now seen corresponding path program 1 times [2024-11-12 13:26:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:08,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775935404] [2024-11-12 13:26:08,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:08,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:08,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775935404] [2024-11-12 13:26:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775935404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493601911] [2024-11-12 13:26:08,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:08,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:08,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:08,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:08,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 13:26:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:09,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 13:26:09,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:09,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:09,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-12 13:26:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:09,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493601911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:09,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:09,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-12 13:26:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105161699] [2024-11-12 13:26:09,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:09,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 13:26:09,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 13:26:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-12 13:26:09,207 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:09,275 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-11-12 13:26:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:26:09,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-12 13:26:09,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:09,276 INFO L225 Difference]: With dead ends: 79 [2024-11-12 13:26:09,276 INFO L226 Difference]: Without dead ends: 79 [2024-11-12 13:26:09,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:26:09,276 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 70 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:09,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 42 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:26:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-12 13:26:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-11-12 13:26:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2024-11-12 13:26:09,280 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 23 [2024-11-12 13:26:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:09,281 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2024-11-12 13:26:09,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2024-11-12 13:26:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-12 13:26:09,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:09,282 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-12 13:26:09,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 13:26:09,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:09,483 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:09,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 634835432, now seen corresponding path program 2 times [2024-11-12 13:26:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:09,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569892985] [2024-11-12 13:26:09,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:09,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:09,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569892985] [2024-11-12 13:26:09,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569892985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959858975] [2024-11-12 13:26:09,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:26:09,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:09,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:09,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:09,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 13:26:09,666 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:26:09,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:09,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 13:26:09,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:09,732 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 13:26:09,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959858975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:09,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 13:26:09,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-12 13:26:09,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607156067] [2024-11-12 13:26:09,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:09,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 13:26:09,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 13:26:09,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-12 13:26:09,733 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:09,793 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2024-11-12 13:26:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:26:09,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-12 13:26:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:09,794 INFO L225 Difference]: With dead ends: 65 [2024-11-12 13:26:09,794 INFO L226 Difference]: Without dead ends: 65 [2024-11-12 13:26:09,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-12 13:26:09,795 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:09,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 41 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:26:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-12 13:26:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2024-11-12 13:26:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2024-11-12 13:26:09,802 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 25 [2024-11-12 13:26:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:09,802 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2024-11-12 13:26:09,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2024-11-12 13:26:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 13:26:09,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:09,803 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:09,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 13:26:10,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-12 13:26:10,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:10,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1809865305, now seen corresponding path program 1 times [2024-11-12 13:26:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:10,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542383731] [2024-11-12 13:26:10,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:10,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:10,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542383731] [2024-11-12 13:26:10,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542383731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225495589] [2024-11-12 13:26:10,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:10,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:10,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:10,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:10,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 13:26:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:10,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 13:26:10,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:10,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:26:10,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225495589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:10,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:10,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-12 13:26:10,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796906694] [2024-11-12 13:26:10,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:10,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 13:26:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:10,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 13:26:10,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:26:10,214 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:10,336 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2024-11-12 13:26:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 13:26:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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) Word has length 26 [2024-11-12 13:26:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:10,337 INFO L225 Difference]: With dead ends: 137 [2024-11-12 13:26:10,337 INFO L226 Difference]: Without dead ends: 137 [2024-11-12 13:26:10,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-11-12 13:26:10,338 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:10,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 67 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-12 13:26:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2024-11-12 13:26:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.2109375) internal successors, (155), 132 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2024-11-12 13:26:10,342 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 26 [2024-11-12 13:26:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:10,342 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2024-11-12 13:26:10,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2024-11-12 13:26:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-12 13:26:10,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:10,343 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:10,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 13:26:10,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:10,544 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:10,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:10,545 INFO L85 PathProgramCache]: Analyzing trace with hash 164722723, now seen corresponding path program 1 times [2024-11-12 13:26:10,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:10,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231077033] [2024-11-12 13:26:10,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:10,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:10,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231077033] [2024-11-12 13:26:10,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231077033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:10,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259183450] [2024-11-12 13:26:10,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:10,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:10,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:10,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:10,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 13:26:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:10,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 13:26:10,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:10,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259183450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:10,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:10,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-12 13:26:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069277363] [2024-11-12 13:26:10,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:10,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 13:26:10,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 13:26:10,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-12 13:26:10,830 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:11,001 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2024-11-12 13:26:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:26:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-12 13:26:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:11,002 INFO L225 Difference]: With dead ends: 133 [2024-11-12 13:26:11,002 INFO L226 Difference]: Without dead ends: 133 [2024-11-12 13:26:11,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-12 13:26:11,003 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:11,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 64 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-12 13:26:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-12 13:26:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.1875) internal successors, (152), 132 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2024-11-12 13:26:11,007 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 34 [2024-11-12 13:26:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:11,007 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2024-11-12 13:26:11,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2024-11-12 13:26:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-12 13:26:11,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:11,008 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:11,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 13:26:11,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:11,209 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:11,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash 882673172, now seen corresponding path program 2 times [2024-11-12 13:26:11,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:11,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281076201] [2024-11-12 13:26:11,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:11,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-12 13:26:11,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281076201] [2024-11-12 13:26:11,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281076201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556705703] [2024-11-12 13:26:11,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:26:11,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:11,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:11,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:11,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 13:26:11,457 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:26:11,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:11,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 13:26:11,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:11,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-12 13:26:11,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-12 13:26:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-12 13:26:11,636 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-12 13:26:11,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556705703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:11,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:11,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2024-11-12 13:26:11,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228455662] [2024-11-12 13:26:11,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:11,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 13:26:11,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:11,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 13:26:11,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:26:11,776 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:11,850 INFO L93 Difference]: Finished difference Result 165 states and 180 transitions. [2024-11-12 13:26:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:26:11,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-12 13:26:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:11,851 INFO L225 Difference]: With dead ends: 165 [2024-11-12 13:26:11,851 INFO L226 Difference]: Without dead ends: 165 [2024-11-12 13:26:11,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:26:11,852 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 28 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:11,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 94 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-12 13:26:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2024-11-12 13:26:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.1688311688311688) internal successors, (180), 158 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 180 transitions. [2024-11-12 13:26:11,855 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 180 transitions. Word has length 39 [2024-11-12 13:26:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:11,856 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 180 transitions. [2024-11-12 13:26:11,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 180 transitions. [2024-11-12 13:26:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 13:26:11,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:11,857 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:11,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 13:26:12,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 13:26:12,061 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:12,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash -890031373, now seen corresponding path program 1 times [2024-11-12 13:26:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:12,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588469685] [2024-11-12 13:26:12,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:12,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 13:26:12,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588469685] [2024-11-12 13:26:12,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588469685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135299634] [2024-11-12 13:26:12,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:12,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:12,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:12,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 13:26:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:12,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 13:26:12,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 37 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 13:26:12,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 37 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 13:26:12,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135299634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:12,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:12,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2024-11-12 13:26:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215386751] [2024-11-12 13:26:12,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:12,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 13:26:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 13:26:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-12 13:26:12,429 INFO L87 Difference]: Start difference. First operand 159 states and 180 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:12,580 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2024-11-12 13:26:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 13:26:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 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 42 [2024-11-12 13:26:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:12,582 INFO L225 Difference]: With dead ends: 152 [2024-11-12 13:26:12,582 INFO L226 Difference]: Without dead ends: 152 [2024-11-12 13:26:12,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2024-11-12 13:26:12,583 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:12,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 87 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-12 13:26:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-11-12 13:26:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.1496598639455782) internal successors, (169), 151 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2024-11-12 13:26:12,586 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 42 [2024-11-12 13:26:12,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:12,586 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2024-11-12 13:26:12,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2024-11-12 13:26:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-12 13:26:12,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:12,588 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-12 13:26:12,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 13:26:12,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 13:26:12,792 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:12,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash 11435127, now seen corresponding path program 2 times [2024-11-12 13:26:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561738509] [2024-11-12 13:26:12,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:12,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 27 proven. 175 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-12 13:26:12,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:12,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561738509] [2024-11-12 13:26:12,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561738509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:12,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581282420] [2024-11-12 13:26:12,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:26:12,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:12,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:12,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:12,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 13:26:13,065 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:26:13,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:13,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 13:26:13,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 43 proven. 159 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-12 13:26:13,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 43 proven. 159 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-12 13:26:13,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581282420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:13,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:13,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2024-11-12 13:26:13,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653438486] [2024-11-12 13:26:13,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:13,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 13:26:13,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:13,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 13:26:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-12 13:26:13,310 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:13,535 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2024-11-12 13:26:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 13:26:13,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 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 64 [2024-11-12 13:26:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:13,536 INFO L225 Difference]: With dead ends: 150 [2024-11-12 13:26:13,536 INFO L226 Difference]: Without dead ends: 150 [2024-11-12 13:26:13,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2024-11-12 13:26:13,537 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:13,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 66 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-12 13:26:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-12 13:26:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1310344827586207) internal successors, (164), 149 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 164 transitions. [2024-11-12 13:26:13,540 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 164 transitions. Word has length 64 [2024-11-12 13:26:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:13,540 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 164 transitions. [2024-11-12 13:26:13,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 164 transitions. [2024-11-12 13:26:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-12 13:26:13,541 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:13,541 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-12 13:26:13,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 13:26:13,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 13:26:13,742 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:13,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:13,742 INFO L85 PathProgramCache]: Analyzing trace with hash -831517957, now seen corresponding path program 3 times [2024-11-12 13:26:13,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:13,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102368952] [2024-11-12 13:26:13,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:13,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 294 proven. 77 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-12 13:26:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102368952] [2024-11-12 13:26:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102368952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:13,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719923618] [2024-11-12 13:26:13,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:26:13,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:13,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:13,993 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:13,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 13:26:14,075 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-12 13:26:14,076 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:14,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 13:26:14,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 191 proven. 38 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-12 13:26:14,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 191 proven. 38 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-12 13:26:14,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719923618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:14,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:14,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 22 [2024-11-12 13:26:14,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478089893] [2024-11-12 13:26:14,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:14,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 13:26:14,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:14,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 13:26:14,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-11-12 13:26:14,269 INFO L87 Difference]: Start difference. First operand 150 states and 164 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:15,222 INFO L93 Difference]: Finished difference Result 220 states and 253 transitions. [2024-11-12 13:26:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-12 13:26:15,223 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-12 13:26:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:15,224 INFO L225 Difference]: With dead ends: 220 [2024-11-12 13:26:15,224 INFO L226 Difference]: Without dead ends: 220 [2024-11-12 13:26:15,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=604, Invalid=2152, Unknown=0, NotChecked=0, Total=2756 [2024-11-12 13:26:15,225 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 195 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:15,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 193 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:26:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-12 13:26:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2024-11-12 13:26:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.187192118226601) internal successors, (241), 207 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 241 transitions. [2024-11-12 13:26:15,228 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 241 transitions. Word has length 86 [2024-11-12 13:26:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:15,228 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 241 transitions. [2024-11-12 13:26:15,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 241 transitions. [2024-11-12 13:26:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-12 13:26:15,229 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:15,229 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-12 13:26:15,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 13:26:15,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 13:26:15,434 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:15,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:15,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1372184046, now seen corresponding path program 1 times [2024-11-12 13:26:15,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:15,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242831345] [2024-11-12 13:26:15,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-12 13:26:15,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242831345] [2024-11-12 13:26:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242831345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891097257] [2024-11-12 13:26:15,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:15,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:15,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:15,752 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:15,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 13:26:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:15,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 13:26:15,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:15,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-12 13:26:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-12 13:26:16,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-12 13:26:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891097257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:16,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-12 13:26:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627682257] [2024-11-12 13:26:16,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:16,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 13:26:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 13:26:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-12 13:26:16,696 INFO L87 Difference]: Start difference. First operand 208 states and 241 transitions. Second operand has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:16,974 INFO L93 Difference]: Finished difference Result 222 states and 245 transitions. [2024-11-12 13:26:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 13:26:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 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 92 [2024-11-12 13:26:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:16,976 INFO L225 Difference]: With dead ends: 222 [2024-11-12 13:26:16,978 INFO L226 Difference]: Without dead ends: 222 [2024-11-12 13:26:16,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2024-11-12 13:26:16,979 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 66 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:16,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 71 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:26:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-12 13:26:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2024-11-12 13:26:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1365853658536584) internal successors, (233), 209 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 233 transitions. [2024-11-12 13:26:16,984 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 233 transitions. Word has length 92 [2024-11-12 13:26:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:16,985 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 233 transitions. [2024-11-12 13:26:16,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 233 transitions. [2024-11-12 13:26:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-12 13:26:16,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:16,987 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:17,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-12 13:26:17,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:17,188 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:17,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash 448185099, now seen corresponding path program 2 times [2024-11-12 13:26:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:17,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348680517] [2024-11-12 13:26:17,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:17,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 269 proven. 150 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-12 13:26:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:17,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348680517] [2024-11-12 13:26:17,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348680517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:17,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069892822] [2024-11-12 13:26:17,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:26:17,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:17,661 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:17,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 13:26:17,743 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 13:26:17,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:17,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 13:26:17,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:18,565 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_23| Int) (|v_ULTIMATE.start_main_~#mask~0#1.base_18| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_18|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_23| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_18| 0)) (= v_DerPreprocessor_1 (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_23| v_DerPreprocessor_1) |v_ULTIMATE.start_main_~#mask~0#1.base_18| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#b~0#1.base_23|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_23|) 0))) is different from true [2024-11-12 13:26:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-12 13:26:18,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 13:26:18,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069892822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:18,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 13:26:18,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 17 [2024-11-12 13:26:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403074000] [2024-11-12 13:26:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:18,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 13:26:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 13:26:18,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=195, Unknown=1, NotChecked=28, Total=272 [2024-11-12 13:26:18,568 INFO L87 Difference]: Start difference. First operand 210 states and 233 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:18,592 INFO L93 Difference]: Finished difference Result 211 states and 233 transitions. [2024-11-12 13:26:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:26:18,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-12 13:26:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:18,593 INFO L225 Difference]: With dead ends: 211 [2024-11-12 13:26:18,593 INFO L226 Difference]: Without dead ends: 209 [2024-11-12 13:26:18,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=195, Unknown=1, NotChecked=28, Total=272 [2024-11-12 13:26:18,594 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:18,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2024-11-12 13:26:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-12 13:26:18,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-12 13:26:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.1176470588235294) internal successors, (228), 208 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 228 transitions. [2024-11-12 13:26:18,597 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 228 transitions. Word has length 102 [2024-11-12 13:26:18,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:18,597 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 228 transitions. [2024-11-12 13:26:18,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 228 transitions. [2024-11-12 13:26:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-12 13:26:18,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:18,598 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:18,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 13:26:18,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-12 13:26:18,802 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:18,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1008958684, now seen corresponding path program 1 times [2024-11-12 13:26:18,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:18,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774976906] [2024-11-12 13:26:18,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:18,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 279 proven. 140 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-12 13:26:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774976906] [2024-11-12 13:26:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774976906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134560796] [2024-11-12 13:26:19,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:19,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:19,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:19,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:19,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 13:26:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:19,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 13:26:19,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 191 proven. 238 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-12 13:26:19,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 191 proven. 238 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-12 13:26:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134560796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:19,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 26 [2024-11-12 13:26:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608764355] [2024-11-12 13:26:19,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:19,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 13:26:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 13:26:19,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-11-12 13:26:19,551 INFO L87 Difference]: Start difference. First operand 209 states and 228 transitions. Second operand has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:20,245 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2024-11-12 13:26:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 13:26:20,245 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 0 states have call successors, (0), 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 103 [2024-11-12 13:26:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:20,246 INFO L225 Difference]: With dead ends: 209 [2024-11-12 13:26:20,246 INFO L226 Difference]: Without dead ends: 209 [2024-11-12 13:26:20,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=410, Invalid=1570, Unknown=0, NotChecked=0, Total=1980 [2024-11-12 13:26:20,248 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 65 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:20,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 98 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 13:26:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-12 13:26:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-12 13:26:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.107843137254902) internal successors, (226), 208 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2024-11-12 13:26:20,251 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 103 [2024-11-12 13:26:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:20,251 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2024-11-12 13:26:20,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2024-11-12 13:26:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-12 13:26:20,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:20,252 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:20,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-12 13:26:20,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:20,453 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:20,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1018520203, now seen corresponding path program 2 times [2024-11-12 13:26:20,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:20,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718794318] [2024-11-12 13:26:20,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-12 13:26:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:20,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718794318] [2024-11-12 13:26:20,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718794318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:20,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050167844] [2024-11-12 13:26:20,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:26:20,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:20,752 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:20,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 13:26:20,856 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:26:20,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:20,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 13:26:20,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 40 proven. 283 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-12 13:26:21,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:21,370 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 [2024-11-12 13:26:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 40 proven. 283 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-12 13:26:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050167844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:21,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:21,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 19 [2024-11-12 13:26:21,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920406240] [2024-11-12 13:26:21,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:21,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 13:26:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 13:26:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-12 13:26:21,474 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:21,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:21,752 INFO L93 Difference]: Finished difference Result 281 states and 304 transitions. [2024-11-12 13:26:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 13:26:21,753 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 108 [2024-11-12 13:26:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:21,754 INFO L225 Difference]: With dead ends: 281 [2024-11-12 13:26:21,754 INFO L226 Difference]: Without dead ends: 281 [2024-11-12 13:26:21,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-11-12 13:26:21,755 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 206 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:21,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 231 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:26:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-12 13:26:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 216. [2024-11-12 13:26:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1042654028436019) internal successors, (233), 215 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 233 transitions. [2024-11-12 13:26:21,759 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 233 transitions. Word has length 108 [2024-11-12 13:26:21,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:21,759 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 233 transitions. [2024-11-12 13:26:21,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 233 transitions. [2024-11-12 13:26:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-12 13:26:21,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:21,760 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-12 13:26:21,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-12 13:26:21,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:21,965 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:21,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash 129325764, now seen corresponding path program 4 times [2024-11-12 13:26:21,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:21,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887226350] [2024-11-12 13:26:21,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 613 proven. 295 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-12 13:26:22,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:22,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887226350] [2024-11-12 13:26:22,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887226350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:22,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78270921] [2024-11-12 13:26:22,547 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 13:26:22,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:22,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:22,549 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:22,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 13:26:22,659 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 13:26:22,660 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:22,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 13:26:22,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 254 proven. 664 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-12 13:26:23,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 254 proven. 664 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-12 13:26:23,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78270921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:23,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:23,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 43 [2024-11-12 13:26:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589342803] [2024-11-12 13:26:23,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:23,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-12 13:26:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-12 13:26:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1382, Unknown=0, NotChecked=0, Total=1806 [2024-11-12 13:26:23,340 INFO L87 Difference]: Start difference. First operand 216 states and 233 transitions. Second operand has 43 states, 43 states have (on average 5.744186046511628) internal successors, (247), 43 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:24,458 INFO L93 Difference]: Finished difference Result 401 states and 438 transitions. [2024-11-12 13:26:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-12 13:26:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.744186046511628) internal successors, (247), 43 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-12 13:26:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:24,460 INFO L225 Difference]: With dead ends: 401 [2024-11-12 13:26:24,460 INFO L226 Difference]: Without dead ends: 401 [2024-11-12 13:26:24,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 214 SyntacticMatches, 5 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3347 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1964, Invalid=7738, Unknown=0, NotChecked=0, Total=9702 [2024-11-12 13:26:24,464 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 148 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:24,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 95 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 13:26:24,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-12 13:26:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 381. [2024-11-12 13:26:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 376 states have (on average 1.0904255319148937) internal successors, (410), 380 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 410 transitions. [2024-11-12 13:26:24,470 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 410 transitions. Word has length 121 [2024-11-12 13:26:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:24,470 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 410 transitions. [2024-11-12 13:26:24,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.744186046511628) internal successors, (247), 43 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 410 transitions. [2024-11-12 13:26:24,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-12 13:26:24,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:24,471 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1] [2024-11-12 13:26:24,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 13:26:24,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-12 13:26:24,676 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:24,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1920952833, now seen corresponding path program 3 times [2024-11-12 13:26:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:24,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692556931] [2024-11-12 13:26:24,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:24,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 295 proven. 603 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-12 13:26:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692556931] [2024-11-12 13:26:24,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692556931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:24,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680997798] [2024-11-12 13:26:24,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:26:24,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:24,952 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:24,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 13:26:25,036 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 13:26:25,036 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:25,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 13:26:25,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:25,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-12 13:26:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:26:25,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-12 13:26:25,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-12 13:26:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 10 proven. 413 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-12 13:26:26,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-12 13:26:26,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680997798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:26,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2024-11-12 13:26:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842383140] [2024-11-12 13:26:26,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:26,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 13:26:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:26,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 13:26:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2024-11-12 13:26:26,762 INFO L87 Difference]: Start difference. First operand 381 states and 410 transitions. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:29,187 INFO L93 Difference]: Finished difference Result 380 states and 401 transitions. [2024-11-12 13:26:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-12 13:26:29,188 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-12 13:26:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:29,189 INFO L225 Difference]: With dead ends: 380 [2024-11-12 13:26:29,189 INFO L226 Difference]: Without dead ends: 380 [2024-11-12 13:26:29,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1831, Invalid=5309, Unknown=0, NotChecked=0, Total=7140 [2024-11-12 13:26:29,190 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 199 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:29,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 131 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 13:26:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-12 13:26:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-12 13:26:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 376 states have (on average 1.0664893617021276) internal successors, (401), 379 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 401 transitions. [2024-11-12 13:26:29,195 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 401 transitions. Word has length 130 [2024-11-12 13:26:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:29,195 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 401 transitions. [2024-11-12 13:26:29,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 401 transitions. [2024-11-12 13:26:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-12 13:26:29,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:29,196 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 13:26:29,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-12 13:26:29,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:29,399 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:29,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1097568675, now seen corresponding path program 3 times [2024-11-12 13:26:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:29,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389373503] [2024-11-12 13:26:29,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-12 13:26:29,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389373503] [2024-11-12 13:26:29,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389373503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877763278] [2024-11-12 13:26:29,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:26:29,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:29,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:29,625 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:29,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 13:26:29,711 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 13:26:29,711 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:29,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 13:26:29,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:29,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:26:29,720 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 11 treesize of output 5 [2024-11-12 13:26:29,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-12 13:26:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2024-11-12 13:26:30,097 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 13:26:30,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877763278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:26:30,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 13:26:30,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-12 13:26:30,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845837564] [2024-11-12 13:26:30,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:26:30,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 13:26:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 13:26:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-12 13:26:30,099 INFO L87 Difference]: Start difference. First operand 380 states and 401 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:30,127 INFO L93 Difference]: Finished difference Result 379 states and 398 transitions. [2024-11-12 13:26:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:26:30,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 149 [2024-11-12 13:26:30,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:30,130 INFO L225 Difference]: With dead ends: 379 [2024-11-12 13:26:30,130 INFO L226 Difference]: Without dead ends: 379 [2024-11-12 13:26:30,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-12 13:26:30,131 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:30,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 33 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:26:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-12 13:26:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-11-12 13:26:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 376 states have (on average 1.0585106382978724) internal successors, (398), 378 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 398 transitions. [2024-11-12 13:26:30,136 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 398 transitions. Word has length 149 [2024-11-12 13:26:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:30,136 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 398 transitions. [2024-11-12 13:26:30,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 398 transitions. [2024-11-12 13:26:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-12 13:26:30,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:30,138 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:26:30,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-12 13:26:30,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:30,342 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:30,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1797778537, now seen corresponding path program 1 times [2024-11-12 13:26:30,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:30,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787481693] [2024-11-12 13:26:30,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:30,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-12 13:26:30,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:30,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787481693] [2024-11-12 13:26:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787481693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:30,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891698387] [2024-11-12 13:26:30,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:30,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:30,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:30,580 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:30,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 13:26:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:30,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-12 13:26:30,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-12 13:26:30,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 21 proven. 990 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-12 13:26:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891698387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:31,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 14] total 32 [2024-11-12 13:26:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535301666] [2024-11-12 13:26:31,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:31,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-12 13:26:31,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-12 13:26:31,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=681, Unknown=0, NotChecked=0, Total=992 [2024-11-12 13:26:31,453 INFO L87 Difference]: Start difference. First operand 379 states and 398 transitions. Second operand has 32 states, 32 states have (on average 7.46875) internal successors, (239), 32 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:32,343 INFO L93 Difference]: Finished difference Result 596 states and 627 transitions. [2024-11-12 13:26:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 13:26:32,343 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.46875) internal successors, (239), 32 states have internal predecessors, (239), 0 states have call successors, (0), 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 162 [2024-11-12 13:26:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:32,345 INFO L225 Difference]: With dead ends: 596 [2024-11-12 13:26:32,345 INFO L226 Difference]: Without dead ends: 596 [2024-11-12 13:26:32,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=471, Invalid=861, Unknown=0, NotChecked=0, Total=1332 [2024-11-12 13:26:32,346 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 326 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:32,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 423 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 13:26:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-12 13:26:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 590. [2024-11-12 13:26:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 587 states have (on average 1.0681431005110733) internal successors, (627), 589 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 627 transitions. [2024-11-12 13:26:32,351 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 627 transitions. Word has length 162 [2024-11-12 13:26:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:32,351 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 627 transitions. [2024-11-12 13:26:32,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.46875) internal successors, (239), 32 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 627 transitions. [2024-11-12 13:26:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-12 13:26:32,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:32,353 INFO L218 NwaCegarLoop]: trace histogram [49, 48, 48, 48, 48, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1] [2024-11-12 13:26:32,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-12 13:26:32,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:32,558 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:32,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash 763391400, now seen corresponding path program 5 times [2024-11-12 13:26:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:32,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817525174] [2024-11-12 13:26:32,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6332 backedges. 3818 proven. 1072 refuted. 0 times theorem prover too weak. 1442 trivial. 0 not checked. [2024-11-12 13:26:33,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:33,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817525174] [2024-11-12 13:26:33,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817525174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:33,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649551254] [2024-11-12 13:26:33,263 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 13:26:33,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:33,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:33,265 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:33,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-12 13:26:33,479 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-12 13:26:33,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:33,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 13:26:33,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6332 backedges. 4211 proven. 300 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2024-11-12 13:26:33,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6332 backedges. 4237 proven. 274 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2024-11-12 13:26:34,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649551254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:34,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:34,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 39 [2024-11-12 13:26:34,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500560476] [2024-11-12 13:26:34,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:34,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-12 13:26:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-12 13:26:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1232, Unknown=0, NotChecked=0, Total=1482 [2024-11-12 13:26:34,031 INFO L87 Difference]: Start difference. First operand 590 states and 627 transitions. Second operand has 39 states, 39 states have (on average 5.358974358974359) internal successors, (209), 39 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:35,007 INFO L93 Difference]: Finished difference Result 590 states and 620 transitions. [2024-11-12 13:26:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-12 13:26:35,008 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.358974358974359) internal successors, (209), 39 states have internal predecessors, (209), 0 states have call successors, (0), 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 301 [2024-11-12 13:26:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:35,009 INFO L225 Difference]: With dead ends: 590 [2024-11-12 13:26:35,009 INFO L226 Difference]: Without dead ends: 590 [2024-11-12 13:26:35,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 575 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1050, Invalid=3920, Unknown=0, NotChecked=0, Total=4970 [2024-11-12 13:26:35,011 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 73 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:35,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 228 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 13:26:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-12 13:26:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-12 13:26:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 587 states have (on average 1.0562180579216354) internal successors, (620), 589 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 620 transitions. [2024-11-12 13:26:35,018 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 620 transitions. Word has length 301 [2024-11-12 13:26:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:35,018 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 620 transitions. [2024-11-12 13:26:35,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.358974358974359) internal successors, (209), 39 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 620 transitions. [2024-11-12 13:26:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-12 13:26:35,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:35,021 INFO L218 NwaCegarLoop]: trace histogram [52, 51, 51, 51, 51, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1] [2024-11-12 13:26:35,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-12 13:26:35,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 13:26:35,221 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:35,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1134310783, now seen corresponding path program 6 times [2024-11-12 13:26:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:35,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718449561] [2024-11-12 13:26:35,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7097 backedges. 4379 proven. 1673 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2024-11-12 13:26:35,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:35,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718449561] [2024-11-12 13:26:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718449561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:35,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128157234] [2024-11-12 13:26:35,904 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 13:26:35,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:35,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:35,906 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:35,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-12 13:26:36,495 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-12 13:26:36,496 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:36,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 13:26:36,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7097 backedges. 5041 proven. 1392 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2024-11-12 13:26:36,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7097 backedges. 5041 proven. 1392 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2024-11-12 13:26:37,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128157234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:37,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:37,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 37 [2024-11-12 13:26:37,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017754552] [2024-11-12 13:26:37,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:37,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-12 13:26:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-12 13:26:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2024-11-12 13:26:37,276 INFO L87 Difference]: Start difference. First operand 590 states and 620 transitions. Second operand has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:38,590 INFO L93 Difference]: Finished difference Result 590 states and 609 transitions. [2024-11-12 13:26:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-12 13:26:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 0 states have call successors, (0), 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 316 [2024-11-12 13:26:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:38,595 INFO L225 Difference]: With dead ends: 590 [2024-11-12 13:26:38,596 INFO L226 Difference]: Without dead ends: 590 [2024-11-12 13:26:38,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 606 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1814, Invalid=5158, Unknown=0, NotChecked=0, Total=6972 [2024-11-12 13:26:38,598 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:38,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 192 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 13:26:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-12 13:26:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-12 13:26:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 587 states have (on average 1.0374787052810903) internal successors, (609), 589 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 609 transitions. [2024-11-12 13:26:38,604 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 609 transitions. Word has length 316 [2024-11-12 13:26:38,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:38,604 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 609 transitions. [2024-11-12 13:26:38,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:38,604 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 609 transitions. [2024-11-12 13:26:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-12 13:26:38,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:38,605 INFO L218 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 54, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1] [2024-11-12 13:26:38,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-12 13:26:38,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-12 13:26:38,810 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:38,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1065134024, now seen corresponding path program 7 times [2024-11-12 13:26:38,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639409236] [2024-11-12 13:26:38,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:38,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7907 backedges. 4223 proven. 1467 refuted. 0 times theorem prover too weak. 2217 trivial. 0 not checked. [2024-11-12 13:26:39,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:39,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639409236] [2024-11-12 13:26:39,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639409236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:39,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379371325] [2024-11-12 13:26:39,665 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 13:26:39,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:39,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:39,666 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:39,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-12 13:26:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:39,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 13:26:39,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 7907 backedges. 289 proven. 6974 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2024-11-12 13:26:40,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7907 backedges. 289 proven. 6974 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2024-11-12 13:26:40,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379371325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:40,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:40,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 22] total 44 [2024-11-12 13:26:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980155621] [2024-11-12 13:26:40,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:40,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-12 13:26:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:40,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-12 13:26:40,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2024-11-12 13:26:40,943 INFO L87 Difference]: Start difference. First operand 590 states and 609 transitions. Second operand has 44 states, 44 states have (on average 6.159090909090909) internal successors, (271), 44 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:42,277 INFO L93 Difference]: Finished difference Result 568 states and 580 transitions. [2024-11-12 13:26:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-12 13:26:42,278 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.159090909090909) internal successors, (271), 44 states have internal predecessors, (271), 0 states have call successors, (0), 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 331 [2024-11-12 13:26:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:42,279 INFO L225 Difference]: With dead ends: 568 [2024-11-12 13:26:42,279 INFO L226 Difference]: Without dead ends: 568 [2024-11-12 13:26:42,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 626 SyntacticMatches, 19 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3805 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2077, Invalid=9265, Unknown=0, NotChecked=0, Total=11342 [2024-11-12 13:26:42,282 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 146 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:42,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 83 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 13:26:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-12 13:26:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-12 13:26:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 565 states have (on average 1.0265486725663717) internal successors, (580), 567 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 580 transitions. [2024-11-12 13:26:42,288 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 580 transitions. Word has length 331 [2024-11-12 13:26:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:42,288 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 580 transitions. [2024-11-12 13:26:42,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.159090909090909) internal successors, (271), 44 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 580 transitions. [2024-11-12 13:26:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-12 13:26:42,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:42,290 INFO L218 NwaCegarLoop]: trace histogram [64, 63, 63, 63, 63, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-12 13:26:42,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-12 13:26:42,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-12 13:26:42,490 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:42,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash 223876524, now seen corresponding path program 8 times [2024-11-12 13:26:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:42,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400717298] [2024-11-12 13:26:42,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10728 backedges. 6456 proven. 3383 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2024-11-12 13:26:43,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:43,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400717298] [2024-11-12 13:26:43,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400717298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:43,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815499123] [2024-11-12 13:26:43,313 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:26:43,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:43,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:43,317 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:43,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-12 13:26:43,578 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:26:43,578 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:43,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 13:26:43,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10728 backedges. 7546 proven. 2293 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2024-11-12 13:26:44,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10728 backedges. 7546 proven. 2293 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2024-11-12 13:26:44,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815499123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:44,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:44,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 35 [2024-11-12 13:26:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760805464] [2024-11-12 13:26:44,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:44,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 13:26:44,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 13:26:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 13:26:44,510 INFO L87 Difference]: Start difference. First operand 568 states and 580 transitions. Second operand has 35 states, 35 states have (on average 6.771428571428571) internal successors, (237), 35 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:45,904 INFO L93 Difference]: Finished difference Result 574 states and 582 transitions. [2024-11-12 13:26:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-12 13:26:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.771428571428571) internal successors, (237), 35 states have internal predecessors, (237), 0 states have call successors, (0), 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 383 [2024-11-12 13:26:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:45,906 INFO L225 Difference]: With dead ends: 574 [2024-11-12 13:26:45,906 INFO L226 Difference]: Without dead ends: 574 [2024-11-12 13:26:45,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 737 SyntacticMatches, 17 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2261, Invalid=6481, Unknown=0, NotChecked=0, Total=8742 [2024-11-12 13:26:45,910 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 106 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:45,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 225 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 13:26:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-12 13:26:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2024-11-12 13:26:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 565 states have (on average 1.0194690265486726) internal successors, (576), 567 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 576 transitions. [2024-11-12 13:26:45,920 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 576 transitions. Word has length 383 [2024-11-12 13:26:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:45,920 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 576 transitions. [2024-11-12 13:26:45,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.771428571428571) internal successors, (237), 35 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 576 transitions. [2024-11-12 13:26:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-12 13:26:45,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:45,921 INFO L218 NwaCegarLoop]: trace histogram [65, 64, 64, 64, 64, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-12 13:26:45,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-12 13:26:46,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:46,122 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:46,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1903304557, now seen corresponding path program 9 times [2024-11-12 13:26:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:46,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129236632] [2024-11-12 13:26:46,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11054 backedges. 2907 proven. 245 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2024-11-12 13:26:46,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:46,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129236632] [2024-11-12 13:26:46,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129236632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653842310] [2024-11-12 13:26:46,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:26:46,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:46,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:46,598 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:46,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-12 13:26:46,907 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-12 13:26:46,907 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:46,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 13:26:46,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11054 backedges. 2907 proven. 245 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2024-11-12 13:26:46,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11054 backedges. 2907 proven. 245 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2024-11-12 13:26:47,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653842310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:47,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:47,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-12 13:26:47,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585343511] [2024-11-12 13:26:47,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:47,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 13:26:47,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:47,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 13:26:47,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-11-12 13:26:47,182 INFO L87 Difference]: Start difference. First operand 568 states and 576 transitions. Second operand has 25 states, 24 states have (on average 5.125) internal successors, (123), 25 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) [2024-11-12 13:26:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:26:49,806 INFO L93 Difference]: Finished difference Result 781 states and 858 transitions. [2024-11-12 13:26:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 13:26:49,807 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.125) internal successors, (123), 25 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) Word has length 388 [2024-11-12 13:26:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:26:49,810 INFO L225 Difference]: With dead ends: 781 [2024-11-12 13:26:49,810 INFO L226 Difference]: Without dead ends: 781 [2024-11-12 13:26:49,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 13:26:49,811 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 169 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:26:49,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 185 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:26:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-11-12 13:26:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 745. [2024-11-12 13:26:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 742 states have (on average 1.1078167115902966) internal successors, (822), 744 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:26:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 822 transitions. [2024-11-12 13:26:49,830 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 822 transitions. Word has length 388 [2024-11-12 13:26:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:26:49,830 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 822 transitions. [2024-11-12 13:26:49,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.125) internal successors, (123), 25 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) [2024-11-12 13:26:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 822 transitions. [2024-11-12 13:26:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-12 13:26:49,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:26:49,835 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 64, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-12 13:26:49,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-12 13:26:50,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:50,036 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:26:50,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:26:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1127100931, now seen corresponding path program 2 times [2024-11-12 13:26:50,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:26:50,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344485421] [2024-11-12 13:26:50,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:26:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:26:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:26:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11118 backedges. 0 proven. 3216 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2024-11-12 13:26:50,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:26:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344485421] [2024-11-12 13:26:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344485421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:26:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496960209] [2024-11-12 13:26:50,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:26:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:26:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:26:50,796 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:26:50,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-12 13:26:51,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:26:51,042 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:26:51,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 13:26:51,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:26:51,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-12 13:26:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11118 backedges. 235 proven. 10004 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2024-11-12 13:26:52,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:26:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 11118 backedges. 225 proven. 10014 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2024-11-12 13:26:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496960209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:26:55,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:26:55,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 23] total 57 [2024-11-12 13:26:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719167557] [2024-11-12 13:26:55,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:26:55,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-12 13:26:55,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:26:55,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-12 13:26:55,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=2756, Unknown=0, NotChecked=0, Total=3306 [2024-11-12 13:26:55,936 INFO L87 Difference]: Start difference. First operand 745 states and 822 transitions. Second operand has 58 states, 57 states have (on average 6.912280701754386) internal successors, (394), 58 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:07,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:27:07,303 INFO L93 Difference]: Finished difference Result 1874 states and 2056 transitions. [2024-11-12 13:27:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2024-11-12 13:27:07,303 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 6.912280701754386) internal successors, (394), 58 states have internal predecessors, (394), 0 states have call successors, (0), 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 389 [2024-11-12 13:27:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:27:07,310 INFO L225 Difference]: With dead ends: 1874 [2024-11-12 13:27:07,310 INFO L226 Difference]: Without dead ends: 1874 [2024-11-12 13:27:07,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41097 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=15760, Invalid=90842, Unknown=0, NotChecked=0, Total=106602 [2024-11-12 13:27:07,324 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 656 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-12 13:27:07,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 65 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-12 13:27:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2024-11-12 13:27:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1740. [2024-11-12 13:27:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1737 states have (on average 1.100748416810593) internal successors, (1912), 1739 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 1912 transitions. [2024-11-12 13:27:07,359 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 1912 transitions. Word has length 389 [2024-11-12 13:27:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:27:07,360 INFO L471 AbstractCegarLoop]: Abstraction has 1740 states and 1912 transitions. [2024-11-12 13:27:07,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 6.912280701754386) internal successors, (394), 58 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 1912 transitions. [2024-11-12 13:27:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-12 13:27:07,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:27:07,362 INFO L218 NwaCegarLoop]: trace histogram [87, 86, 86, 86, 86, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1] [2024-11-12 13:27:07,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-12 13:27:07,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-12 13:27:07,563 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:27:07,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:27:07,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1946589288, now seen corresponding path program 10 times [2024-11-12 13:27:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:27:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46089240] [2024-11-12 13:27:07,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:27:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:27:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:27:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 19642 backedges. 13122 proven. 1712 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2024-11-12 13:27:08,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:27:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46089240] [2024-11-12 13:27:08,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46089240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:27:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075685973] [2024-11-12 13:27:08,830 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 13:27:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:27:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:27:08,834 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:27:08,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-12 13:27:09,392 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 13:27:09,392 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:27:09,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 13:27:09,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:27:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 19642 backedges. 14476 proven. 3088 refuted. 0 times theorem prover too weak. 2078 trivial. 0 not checked. [2024-11-12 13:27:10,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:27:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 19642 backedges. 14476 proven. 3088 refuted. 0 times theorem prover too weak. 2078 trivial. 0 not checked. [2024-11-12 13:27:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075685973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:27:10,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:27:10,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 23] total 55 [2024-11-12 13:27:10,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582288578] [2024-11-12 13:27:10,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:27:10,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-12 13:27:10,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:27:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-12 13:27:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2462, Unknown=0, NotChecked=0, Total=2970 [2024-11-12 13:27:10,731 INFO L87 Difference]: Start difference. First operand 1740 states and 1912 transitions. Second operand has 55 states, 55 states have (on average 6.1454545454545455) internal successors, (338), 55 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:27:14,426 INFO L93 Difference]: Finished difference Result 1749 states and 1910 transitions. [2024-11-12 13:27:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-12 13:27:14,426 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 6.1454545454545455) internal successors, (338), 55 states have internal predecessors, (338), 0 states have call successors, (0), 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 505 [2024-11-12 13:27:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:27:14,430 INFO L225 Difference]: With dead ends: 1749 [2024-11-12 13:27:14,430 INFO L226 Difference]: Without dead ends: 1749 [2024-11-12 13:27:14,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 971 SyntacticMatches, 10 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4300 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3061, Invalid=13969, Unknown=0, NotChecked=0, Total=17030 [2024-11-12 13:27:14,435 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 122 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 5727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-12 13:27:14,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 299 Invalid, 5727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 5700 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-12 13:27:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2024-11-12 13:27:14,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1745. [2024-11-12 13:27:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1742 states have (on average 1.0941446613088404) internal successors, (1906), 1744 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 1906 transitions. [2024-11-12 13:27:14,450 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 1906 transitions. Word has length 505 [2024-11-12 13:27:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:27:14,451 INFO L471 AbstractCegarLoop]: Abstraction has 1745 states and 1906 transitions. [2024-11-12 13:27:14,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 6.1454545454545455) internal successors, (338), 55 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 1906 transitions. [2024-11-12 13:27:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2024-11-12 13:27:14,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:27:14,453 INFO L218 NwaCegarLoop]: trace histogram [88, 87, 87, 87, 87, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1] [2024-11-12 13:27:14,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-12 13:27:14,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-12 13:27:14,654 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:27:14,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:27:14,655 INFO L85 PathProgramCache]: Analyzing trace with hash -397371561, now seen corresponding path program 11 times [2024-11-12 13:27:14,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:27:14,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586721251] [2024-11-12 13:27:14,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:27:14,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:27:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:27:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20084 backedges. 1158 proven. 17761 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2024-11-12 13:27:16,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:27:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586721251] [2024-11-12 13:27:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586721251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:27:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674493103] [2024-11-12 13:27:16,708 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 13:27:16,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:27:16,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:27:16,710 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:27:16,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-12 13:27:18,871 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-11-12 13:27:18,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:27:18,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-12 13:27:18,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:27:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20084 backedges. 2292 proven. 16644 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-12 13:27:20,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:27:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 20084 backedges. 2292 proven. 16644 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-12 13:27:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674493103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:27:21,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:27:21,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39, 39] total 93 [2024-11-12 13:27:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590655095] [2024-11-12 13:27:21,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:27:21,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-12 13:27:21,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:27:21,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-12 13:27:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1879, Invalid=6677, Unknown=0, NotChecked=0, Total=8556 [2024-11-12 13:27:21,412 INFO L87 Difference]: Start difference. First operand 1745 states and 1906 transitions. Second operand has 93 states, 93 states have (on average 6.236559139784946) internal successors, (580), 93 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:27:34,118 INFO L93 Difference]: Finished difference Result 1622 states and 1737 transitions. [2024-11-12 13:27:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 394 states. [2024-11-12 13:27:34,119 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 6.236559139784946) internal successors, (580), 93 states have internal predecessors, (580), 0 states have call successors, (0), 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 510 [2024-11-12 13:27:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:27:34,124 INFO L225 Difference]: With dead ends: 1622 [2024-11-12 13:27:34,124 INFO L226 Difference]: Without dead ends: 1622 [2024-11-12 13:27:34,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1427 GetRequests, 961 SyntacticMatches, 12 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99844 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=41841, Invalid=165639, Unknown=0, NotChecked=0, Total=207480 [2024-11-12 13:27:34,133 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 398 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3218 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-12 13:27:34,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 125 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3218 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-12 13:27:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2024-11-12 13:27:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1577. [2024-11-12 13:27:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1574 states have (on average 1.0698856416772553) internal successors, (1684), 1576 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 1684 transitions. [2024-11-12 13:27:34,145 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 1684 transitions. Word has length 510 [2024-11-12 13:27:34,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:27:34,146 INFO L471 AbstractCegarLoop]: Abstraction has 1577 states and 1684 transitions. [2024-11-12 13:27:34,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 6.236559139784946) internal successors, (580), 93 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:27:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 1684 transitions. [2024-11-12 13:27:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-12 13:27:34,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:27:34,148 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 87, 87, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:27:34,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-12 13:27:34,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:27:34,353 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-12 13:27:34,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:27:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1103323680, now seen corresponding path program 2 times [2024-11-12 13:27:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:27:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422575049] [2024-11-12 13:27:34,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:27:34,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:27:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:27:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20499 backedges. 12253 proven. 6513 refuted. 0 times theorem prover too weak. 1733 trivial. 0 not checked. [2024-11-12 13:27:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:27:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422575049] [2024-11-12 13:27:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422575049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:27:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466465277] [2024-11-12 13:27:35,886 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:27:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:27:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:27:35,888 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:27:35,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-12 13:27:36,079 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 13:27:36,080 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:27:36,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 13:27:36,085 INFO L279 TraceCheckSpWp]: Computing forward predicates...