./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ef2b56a2f4ebf2e6f7f4ededf8760f087ff726b08e36644d8dcb52a8d087cd1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:01:42,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:01:42,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 18:01:42,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:01:42,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:01:42,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:01:42,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:01:42,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:01:42,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:01:42,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:01:42,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:01:42,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:01:42,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:01:42,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:01:42,655 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:01:42,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:01:42,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:01:42,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:01:42,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:01:42,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:01:42,656 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:01:42,659 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:01:42,659 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:01:42,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:01:42,660 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:01:42,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:01:42,660 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:01:42,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:01:42,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:01:42,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:01:42,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:01:42,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:01:42,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:01:42,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:01:42,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:01:42,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:01:42,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 18:01:42,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 18:01:42,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:01:42,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:01:42,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:01:42,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:01:42,665 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ef2b56a2f4ebf2e6f7f4ededf8760f087ff726b08e36644d8dcb52a8d087cd1 [2024-10-11 18:01:42,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:01:42,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:01:42,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:01:42,914 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:01:42,915 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:01:42,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2024-10-11 18:01:44,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:01:44,288 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:01:44,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2024-10-11 18:01:44,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/24ad9939f/212992fb277a40c1900c9f06daebc969/FLAG3edd31450 [2024-10-11 18:01:44,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/24ad9939f/212992fb277a40c1900c9f06daebc969 [2024-10-11 18:01:44,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:01:44,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:01:44,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:01:44,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:01:44,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:01:44,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d2e0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44, skipping insertion in model container [2024-10-11 18:01:44,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:01:44,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:01:44,484 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 18:01:44,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:01:44,511 INFO L204 MainTranslator]: Completed translation [2024-10-11 18:01:44,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44 WrapperNode [2024-10-11 18:01:44,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:01:44,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 18:01:44,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 18:01:44,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 18:01:44,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,536 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-10-11 18:01:44,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 18:01:44,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 18:01:44,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 18:01:44,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 18:01:44,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,545 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,554 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]. [2024-10-11 18:01:44,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 18:01:44,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 18:01:44,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 18:01:44,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 18:01:44,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (1/1) ... [2024-10-11 18:01:44,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:01:44,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:44,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 18:01:44,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 18:01:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 18:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 18:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 18:01:44,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 18:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 18:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 18:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 18:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 18:01:44,688 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 18:01:44,690 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 18:01:44,806 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-10-11 18:01:44,806 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 18:01:44,838 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 18:01:44,839 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 18:01:44,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:01:44 BoogieIcfgContainer [2024-10-11 18:01:44,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 18:01:44,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 18:01:44,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 18:01:44,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 18:01:44,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:01:44" (1/3) ... [2024-10-11 18:01:44,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb6d0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:01:44, skipping insertion in model container [2024-10-11 18:01:44,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:01:44" (2/3) ... [2024-10-11 18:01:44,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb6d0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:01:44, skipping insertion in model container [2024-10-11 18:01:44,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:01:44" (3/3) ... [2024-10-11 18:01:44,846 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6.c [2024-10-11 18:01:44,859 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 18:01:44,859 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 18:01:44,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 18:01:44,906 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;@7a692b25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 18:01:44,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-11 18:01:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-11 18:01:44,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:44,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-11 18:01:44,919 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)] === [2024-10-11 18:01:44,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 3138242, now seen corresponding path program 1 times [2024-10-11 18:01:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:44,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827152579] [2024-10-11 18:01:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:44,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:45,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:45,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827152579] [2024-10-11 18:01:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827152579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:45,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:01:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:01:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538828162] [2024-10-11 18:01:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:45,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:01:45,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:01:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:01:45,154 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:45,193 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-10-11 18:01:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:01:45,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-10-11 18:01:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:45,201 INFO L225 Difference]: With dead ends: 27 [2024-10-11 18:01:45,201 INFO L226 Difference]: Without dead ends: 26 [2024-10-11 18:01:45,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:01:45,206 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:45,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-11 18:01:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-10-11 18:01:45,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.8) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-10-11 18:01:45,230 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 4 [2024-10-11 18:01:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:45,231 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-10-11 18:01:45,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-10-11 18:01:45,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 18:01:45,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:45,231 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 18:01:45,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 18:01:45,232 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)] === [2024-10-11 18:01:45,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash 97249997, now seen corresponding path program 1 times [2024-10-11 18:01:45,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:45,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119978890] [2024-10-11 18:01:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:45,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:45,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119978890] [2024-10-11 18:01:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119978890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:01:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:01:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737875279] [2024-10-11 18:01:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:45,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:01:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:01:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:01:45,328 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2024-10-11 18:01:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:45,373 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-10-11 18:01:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:01:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 [2024-10-11 18:01:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:45,374 INFO L225 Difference]: With dead ends: 41 [2024-10-11 18:01:45,374 INFO L226 Difference]: Without dead ends: 41 [2024-10-11 18:01:45,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:01:45,375 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:45,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-11 18:01:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2024-10-11 18:01:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-10-11 18:01:45,380 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2024-10-11 18:01:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:45,380 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-10-11 18:01:45,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2024-10-11 18:01:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-10-11 18:01:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 18:01:45,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:45,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 18:01:45,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 18:01:45,383 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:45,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 97285474, now seen corresponding path program 1 times [2024-10-11 18:01:45,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253143121] [2024-10-11 18:01:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:45,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:45,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:45,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253143121] [2024-10-11 18:01:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253143121] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:45,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:01:45,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:01:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186417993] [2024-10-11 18:01:45,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:45,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:01:45,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:01:45,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:01:45,467 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 18:01:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:45,497 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-10-11 18:01:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:01:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2024-10-11 18:01:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:45,498 INFO L225 Difference]: With dead ends: 27 [2024-10-11 18:01:45,499 INFO L226 Difference]: Without dead ends: 27 [2024-10-11 18:01:45,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:01:45,501 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:45,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:45,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-11 18:01:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-10-11 18:01:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-10-11 18:01:45,508 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2024-10-11 18:01:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:45,509 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-10-11 18:01:45,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 18:01:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-10-11 18:01:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 18:01:45,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:45,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 18:01:45,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 18:01:45,512 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:45,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash 97285555, now seen corresponding path program 1 times [2024-10-11 18:01:45,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:45,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986631398] [2024-10-11 18:01:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:45,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:45,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986631398] [2024-10-11 18:01:45,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986631398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:45,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:01:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:01:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341367805] [2024-10-11 18:01:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:45,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:01:45,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:45,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:01:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:01:45,655 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 18:01:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:45,693 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-10-11 18:01:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:01:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2024-10-11 18:01:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:45,694 INFO L225 Difference]: With dead ends: 24 [2024-10-11 18:01:45,694 INFO L226 Difference]: Without dead ends: 24 [2024-10-11 18:01:45,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:01:45,695 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:45,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 17 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-11 18:01:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-11 18:01:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-10-11 18:01:45,701 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2024-10-11 18:01:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:45,701 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-10-11 18:01:45,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 18:01:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-10-11 18:01:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 18:01:45,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:45,702 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 18:01:45,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 18:01:45,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:45,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash 97285556, now seen corresponding path program 1 times [2024-10-11 18:01:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:45,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583190304] [2024-10-11 18:01:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:45,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:45,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:45,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583190304] [2024-10-11 18:01:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583190304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:45,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:01:45,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:01:45,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778687580] [2024-10-11 18:01:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:45,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:01:45,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:01:45,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:01:45,798 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 18:01:45,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:45,850 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-10-11 18:01:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:01:45,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2024-10-11 18:01:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:45,851 INFO L225 Difference]: With dead ends: 25 [2024-10-11 18:01:45,851 INFO L226 Difference]: Without dead ends: 25 [2024-10-11 18:01:45,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:01:45,852 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:45,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 17 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-11 18:01:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-10-11 18:01:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-10-11 18:01:45,855 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2024-10-11 18:01:45,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:45,855 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-10-11 18:01:45,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 18:01:45,856 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-10-11 18:01:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 18:01:45,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:45,856 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-11 18:01:45,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 18:01:45,857 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)] === [2024-10-11 18:01:45,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash -997809686, now seen corresponding path program 1 times [2024-10-11 18:01:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340610328] [2024-10-11 18:01:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:45,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340610328] [2024-10-11 18:01:45,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340610328] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:45,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246003559] [2024-10-11 18:01:45,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:45,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:45,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:45,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 18:01:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:45,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 18:01:45,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:45,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:46,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246003559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:46,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-11 18:01:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600907788] [2024-10-11 18:01:46,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:46,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 18:01:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 18:01:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:01:46,029 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:46,093 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-10-11 18:01:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:01:46,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 18:01:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:46,095 INFO L225 Difference]: With dead ends: 36 [2024-10-11 18:01:46,095 INFO L226 Difference]: Without dead ends: 36 [2024-10-11 18:01:46,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:01:46,098 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:46,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-11 18:01:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-10-11 18:01:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-10-11 18:01:46,105 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 7 [2024-10-11 18:01:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:46,106 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-10-11 18:01:46,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-10-11 18:01:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 18:01:46,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:46,107 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:01:46,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 18:01:46,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:46,312 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:46,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash -867329222, now seen corresponding path program 1 times [2024-10-11 18:01:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640709440] [2024-10-11 18:01:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:46,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:46,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640709440] [2024-10-11 18:01:46,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640709440] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:46,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109414748] [2024-10-11 18:01:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:46,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:46,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:46,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:46,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 18:01:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:46,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 18:01:46,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:46,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:46,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109414748] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:46,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:46,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-11 18:01:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738849590] [2024-10-11 18:01:46,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:46,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 18:01:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 18:01:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:01:46,465 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:46,499 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-10-11 18:01:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:01:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-11 18:01:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:46,500 INFO L225 Difference]: With dead ends: 33 [2024-10-11 18:01:46,500 INFO L226 Difference]: Without dead ends: 33 [2024-10-11 18:01:46,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:01:46,501 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:46,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-11 18:01:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-10-11 18:01:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 32 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) [2024-10-11 18:01:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-10-11 18:01:46,505 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2024-10-11 18:01:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:46,505 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-10-11 18:01:46,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-10-11 18:01:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 18:01:46,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:46,506 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-11 18:01:46,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 18:01:46,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:46,707 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:46,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash -867329140, now seen corresponding path program 1 times [2024-10-11 18:01:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119038500] [2024-10-11 18:01:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119038500] [2024-10-11 18:01:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119038500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177484907] [2024-10-11 18:01:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:46,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:46,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 18:01:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:46,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 18:01:46,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:46,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-10-11 18:01:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:47,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:47,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177484907] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:47,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:47,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-10-11 18:01:47,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101203868] [2024-10-11 18:01:47,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:47,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 18:01:47,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:47,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 18:01:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-11 18:01:47,096 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:47,194 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-10-11 18:01:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:01:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-11 18:01:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:47,195 INFO L225 Difference]: With dead ends: 34 [2024-10-11 18:01:47,195 INFO L226 Difference]: Without dead ends: 34 [2024-10-11 18:01:47,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-10-11 18:01:47,196 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 25 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 [2024-10-11 18:01:47,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 25 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-11 18:01:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-10-11 18:01:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-10-11 18:01:47,200 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 8 [2024-10-11 18:01:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:47,202 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-10-11 18:01:47,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-10-11 18:01:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 18:01:47,203 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:47,203 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2024-10-11 18:01:47,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 18:01:47,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:47,403 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:47,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1487159490, now seen corresponding path program 2 times [2024-10-11 18:01:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:47,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779122469] [2024-10-11 18:01:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:47,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779122469] [2024-10-11 18:01:47,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779122469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411487934] [2024-10-11 18:01:47,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:01:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:47,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:47,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 18:01:47,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 18:01:47,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:01:47,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 18:01:47,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:47,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411487934] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:47,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:47,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-11 18:01:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846305021] [2024-10-11 18:01:47,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:47,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 18:01:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 18:01:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-10-11 18:01:47,706 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:47,899 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2024-10-11 18:01:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 18:01:47,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-11 18:01:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:47,900 INFO L225 Difference]: With dead ends: 57 [2024-10-11 18:01:47,900 INFO L226 Difference]: Without dead ends: 57 [2024-10-11 18:01:47,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-10-11 18:01:47,901 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:47,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 68 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:01:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-11 18:01:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2024-10-11 18:01:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2024-10-11 18:01:47,908 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 16 [2024-10-11 18:01:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:47,908 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2024-10-11 18:01:47,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2024-10-11 18:01:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 18:01:47,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:47,908 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2024-10-11 18:01:47,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 18:01:48,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 18:01:48,110 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:48,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1142696094, now seen corresponding path program 2 times [2024-10-11 18:01:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522198414] [2024-10-11 18:01:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:48,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:48,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:48,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522198414] [2024-10-11 18:01:48,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522198414] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135589317] [2024-10-11 18:01:48,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:01:48,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:48,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:48,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 18:01:48,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 18:01:48,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:01:48,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 18:01:48,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:48,311 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 18:01:48,313 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-10-11 18:01:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 18:01:48,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:01:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135589317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:48,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:01:48,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [7] total 8 [2024-10-11 18:01:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112508732] [2024-10-11 18:01:48,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:48,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:01:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:01:48,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:01:48,414 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:48,432 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-10-11 18:01:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:01:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-11 18:01:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:48,433 INFO L225 Difference]: With dead ends: 49 [2024-10-11 18:01:48,435 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 18:01:48,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:01:48,435 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:48,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 18:01:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-11 18:01:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2024-10-11 18:01:48,440 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2024-10-11 18:01:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:48,441 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2024-10-11 18:01:48,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-10-11 18:01:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 18:01:48,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:48,444 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2024-10-11 18:01:48,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 18:01:48,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 18:01:48,645 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:48,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1142696093, now seen corresponding path program 1 times [2024-10-11 18:01:48,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:48,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897901910] [2024-10-11 18:01:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:48,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:48,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897901910] [2024-10-11 18:01:48,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897901910] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274974364] [2024-10-11 18:01:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:48,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:48,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:48,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:48,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 18:01:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:48,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:01:48,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:48,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274974364] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:49,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:49,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-11 18:01:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453328628] [2024-10-11 18:01:49,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:49,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 18:01:49,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 18:01:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-10-11 18:01:49,083 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:49,147 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-10-11 18:01:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 18:01:49,147 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-11 18:01:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:49,148 INFO L225 Difference]: With dead ends: 49 [2024-10-11 18:01:49,148 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 18:01:49,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-10-11 18:01:49,149 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:49,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:01:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 18:01:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-11 18:01:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-10-11 18:01:49,152 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 17 [2024-10-11 18:01:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:49,153 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-10-11 18:01:49,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-10-11 18:01:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 18:01:49,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:49,154 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2024-10-11 18:01:49,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 18:01:49,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 18:01:49,355 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:49,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:49,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1142696012, now seen corresponding path program 2 times [2024-10-11 18:01:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:49,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129478508] [2024-10-11 18:01:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:49,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129478508] [2024-10-11 18:01:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129478508] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46010341] [2024-10-11 18:01:49,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:01:49,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:49,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:49,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:49,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 18:01:49,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 18:01:49,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:01:49,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 18:01:49,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:49,587 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 [2024-10-11 18:01:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:49,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:49,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46010341] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:49,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-11 18:01:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953360383] [2024-10-11 18:01:49,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:49,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 18:01:49,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 18:01:49,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-10-11 18:01:49,904 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:50,233 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2024-10-11 18:01:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 18:01:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) Word has length 17 [2024-10-11 18:01:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:50,235 INFO L225 Difference]: With dead ends: 50 [2024-10-11 18:01:50,235 INFO L226 Difference]: Without dead ends: 50 [2024-10-11 18:01:50,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-10-11 18:01:50,236 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 47 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:50,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 45 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:01:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-11 18:01:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-11 18:01:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-10-11 18:01:50,239 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 17 [2024-10-11 18:01:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:50,239 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-10-11 18:01:50,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-10-11 18:01:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 18:01:50,240 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:50,240 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2024-10-11 18:01:50,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 18:01:50,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:50,446 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:50,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:50,447 INFO L85 PathProgramCache]: Analyzing trace with hash -572232254, now seen corresponding path program 3 times [2024-10-11 18:01:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:50,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870788426] [2024-10-11 18:01:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:50,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:50,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:50,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870788426] [2024-10-11 18:01:50,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870788426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:50,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925913591] [2024-10-11 18:01:50,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 18:01:50,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:50,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:50,660 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:50,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 18:01:50,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 18:01:50,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:01:50,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 18:01:50,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-11 18:01:50,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-11 18:01:51,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925913591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:51,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:51,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 20 [2024-10-11 18:01:51,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376342649] [2024-10-11 18:01:51,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:51,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 18:01:51,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 18:01:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-10-11 18:01:51,152 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 21 states, 20 states have (on average 2.5) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:51,479 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-10-11 18:01:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 18:01:51,480 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 21 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 34 [2024-10-11 18:01:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:51,480 INFO L225 Difference]: With dead ends: 55 [2024-10-11 18:01:51,480 INFO L226 Difference]: Without dead ends: 55 [2024-10-11 18:01:51,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=960, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 18:01:51,481 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 139 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:51,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 73 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:01:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-11 18:01:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-10-11 18:01:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2024-10-11 18:01:51,484 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 34 [2024-10-11 18:01:51,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:51,484 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2024-10-11 18:01:51,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2024-10-11 18:01:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 18:01:51,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:51,485 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1] [2024-10-11 18:01:51,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 18:01:51,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 18:01:51,685 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)] === [2024-10-11 18:01:51,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -559330717, now seen corresponding path program 2 times [2024-10-11 18:01:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:51,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812768034] [2024-10-11 18:01:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:51,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:51,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812768034] [2024-10-11 18:01:51,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812768034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:51,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019670836] [2024-10-11 18:01:51,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:01:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:51,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:51,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:51,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 18:01:51,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 18:01:51,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:01:51,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 18:01:51,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:52,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-10-11 18:01:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:01:52,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-10-11 18:01:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 18:01:52,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:01:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019670836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:52,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:01:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [13] total 14 [2024-10-11 18:01:52,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858456651] [2024-10-11 18:01:52,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:52,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:01:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:01:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-11 18:01:52,245 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:52,269 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2024-10-11 18:01:52,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:01:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-11 18:01:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:52,270 INFO L225 Difference]: With dead ends: 85 [2024-10-11 18:01:52,271 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 18:01:52,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-11 18:01:52,272 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:52,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:01:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 18:01:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-10-11 18:01:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.1125) internal successors, (89), 83 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2024-10-11 18:01:52,277 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 35 [2024-10-11 18:01:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:52,277 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2024-10-11 18:01:52,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2024-10-11 18:01:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 18:01:52,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:52,278 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1] [2024-10-11 18:01:52,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 18:01:52,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:52,483 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:52,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash -559330636, now seen corresponding path program 3 times [2024-10-11 18:01:52,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327409196] [2024-10-11 18:01:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327409196] [2024-10-11 18:01:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327409196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424856636] [2024-10-11 18:01:52,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 18:01:52,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:52,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:52,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:52,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 18:01:52,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 18:01:52,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:01:52,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 18:01:52,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:52,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-10-11 18:01:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-11 18:01:53,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-11 18:01:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424856636] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:53,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:53,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 20 [2024-10-11 18:01:53,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089086600] [2024-10-11 18:01:53,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:53,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 18:01:53,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:53,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 18:01:53,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-10-11 18:01:53,386 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:54,217 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2024-10-11 18:01:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 18:01:54,217 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-11 18:01:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:54,218 INFO L225 Difference]: With dead ends: 95 [2024-10-11 18:01:54,218 INFO L226 Difference]: Without dead ends: 95 [2024-10-11 18:01:54,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=461, Invalid=1795, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 18:01:54,219 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 131 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:54,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 67 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 18:01:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-11 18:01:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2024-10-11 18:01:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 78 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) [2024-10-11 18:01:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-10-11 18:01:54,229 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 35 [2024-10-11 18:01:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:54,229 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-10-11 18:01:54,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-10-11 18:01:54,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 18:01:54,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:54,230 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:01:54,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 18:01:54,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 18:01:54,435 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:54,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2093587059, now seen corresponding path program 1 times [2024-10-11 18:01:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:54,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312824657] [2024-10-11 18:01:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:54,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 18:01:54,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:54,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312824657] [2024-10-11 18:01:54,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312824657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:54,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294277838] [2024-10-11 18:01:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:54,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:54,522 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:54,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 18:01:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:54,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 18:01:54,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 1 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:54,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 1 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294277838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:54,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:54,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 13, 13] total 27 [2024-10-11 18:01:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262606479] [2024-10-11 18:01:54,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:54,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 18:01:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 18:01:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2024-10-11 18:01:54,970 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 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) [2024-10-11 18:01:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:55,866 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2024-10-11 18:01:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-11 18:01:55,866 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-11 18:01:55,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:55,867 INFO L225 Difference]: With dead ends: 153 [2024-10-11 18:01:55,867 INFO L226 Difference]: Without dead ends: 153 [2024-10-11 18:01:55,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1752, Invalid=3360, Unknown=0, NotChecked=0, Total=5112 [2024-10-11 18:01:55,869 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 227 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:55,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 20 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:01:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-10-11 18:01:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2024-10-11 18:01:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 149 states have (on average 1.0469798657718121) internal successors, (156), 151 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2024-10-11 18:01:55,874 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 39 [2024-10-11 18:01:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:55,874 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2024-10-11 18:01:55,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 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) [2024-10-11 18:01:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2024-10-11 18:01:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 18:01:55,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:55,875 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:01:55,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 18:01:56,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 18:01:56,075 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:56,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash -932253426, now seen corresponding path program 1 times [2024-10-11 18:01:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:56,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440890602] [2024-10-11 18:01:56,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:56,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 1 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:56,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440890602] [2024-10-11 18:01:56,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440890602] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810596567] [2024-10-11 18:01:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:56,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:56,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:56,576 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:56,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 18:01:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:56,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 18:01:56,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 1 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:57,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 1 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:01:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810596567] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:58,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2024-10-11 18:01:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770351045] [2024-10-11 18:01:58,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:58,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-10-11 18:01:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-10-11 18:01:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2050, Invalid=2920, Unknown=0, NotChecked=0, Total=4970 [2024-10-11 18:01:58,123 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand has 71 states, 71 states have (on average 3.0) internal successors, (213), 71 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:58,252 INFO L93 Difference]: Finished difference Result 212 states and 216 transitions. [2024-10-11 18:01:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 18:01:58,252 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.0) internal successors, (213), 71 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-11 18:01:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:58,253 INFO L225 Difference]: With dead ends: 212 [2024-10-11 18:01:58,253 INFO L226 Difference]: Without dead ends: 212 [2024-10-11 18:01:58,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2050, Invalid=2920, Unknown=0, NotChecked=0, Total=4970 [2024-10-11 18:01:58,255 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:58,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:01:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-11 18:01:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-10-11 18:01:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 1.0334928229665072) internal successors, (216), 211 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 216 transitions. [2024-10-11 18:01:58,260 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 216 transitions. Word has length 77 [2024-10-11 18:01:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:58,261 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 216 transitions. [2024-10-11 18:01:58,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.0) internal successors, (213), 71 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 216 transitions. [2024-10-11 18:01:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-11 18:01:58,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:58,262 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:01:58,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 18:01:58,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 18:01:58,467 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:58,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:58,467 INFO L85 PathProgramCache]: Analyzing trace with hash 209634830, now seen corresponding path program 2 times [2024-10-11 18:01:58,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:58,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874923516] [2024-10-11 18:01:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:58,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-10-11 18:01:58,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:58,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874923516] [2024-10-11 18:01:58,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874923516] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720575341] [2024-10-11 18:01:58,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:01:58,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:58,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:58,602 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:58,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 18:01:58,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 18:01:58,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:01:58,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 18:01:58,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:59,150 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#mask~0#1.base_17| Int) (|v_ULTIMATE.start_main_~#b~0#1.base_26| 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_17|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_26|) 0) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_26| v_DerPreprocessor_1) |v_ULTIMATE.start_main_~#mask~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#b~0#1.base_26|) v_DerPreprocessor_1) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_26| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_17| 0)))) is different from true [2024-10-11 18:01:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-10-11 18:01:59,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:01:59,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720575341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:01:59,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:01:59,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-10-11 18:01:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841695415] [2024-10-11 18:01:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:01:59,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:01:59,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:01:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2024-10-11 18:01:59,153 INFO L87 Difference]: Start difference. First operand 212 states and 216 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:01:59,175 INFO L93 Difference]: Finished difference Result 213 states and 216 transitions. [2024-10-11 18:01:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:01:59,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-11 18:01:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:01:59,176 INFO L225 Difference]: With dead ends: 213 [2024-10-11 18:01:59,176 INFO L226 Difference]: Without dead ends: 212 [2024-10-11 18:01:59,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2024-10-11 18:01:59,177 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:01:59,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2024-10-11 18:01:59,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-11 18:01:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-10-11 18:01:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 1.0287081339712918) internal successors, (215), 211 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 215 transitions. [2024-10-11 18:01:59,180 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 215 transitions. Word has length 107 [2024-10-11 18:01:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:01:59,180 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 215 transitions. [2024-10-11 18:01:59,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:01:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 215 transitions. [2024-10-11 18:01:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-11 18:01:59,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:01:59,182 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:01:59,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 18:01:59,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 18:01:59,383 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:01:59,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:01:59,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2091249601, now seen corresponding path program 1 times [2024-10-11 18:01:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:01:59,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909164603] [2024-10-11 18:01:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:59,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:01:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2024-10-11 18:01:59,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:01:59,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909164603] [2024-10-11 18:01:59,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909164603] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:01:59,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666748547] [2024-10-11 18:01:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:01:59,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:01:59,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:01:59,529 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:01:59,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 18:01:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:01:59,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 18:01:59,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:01:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2024-10-11 18:01:59,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:01:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2024-10-11 18:01:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666748547] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:01:59,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:01:59,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 10 [2024-10-11 18:01:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900943347] [2024-10-11 18:01:59,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:01:59,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 18:01:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:01:59,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 18:01:59,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-10-11 18:01:59,979 INFO L87 Difference]: Start difference. First operand 212 states and 215 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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) [2024-10-11 18:02:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:00,065 INFO L93 Difference]: Finished difference Result 421 states and 430 transitions. [2024-10-11 18:02:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:02:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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) Word has length 108 [2024-10-11 18:02:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:00,067 INFO L225 Difference]: With dead ends: 421 [2024-10-11 18:02:00,067 INFO L226 Difference]: Without dead ends: 421 [2024-10-11 18:02:00,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:02:00,068 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:00,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 24 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:02:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-11 18:02:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-10-11 18:02:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 418 states have (on average 1.0287081339712918) internal successors, (430), 420 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 430 transitions. [2024-10-11 18:02:00,072 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 430 transitions. Word has length 108 [2024-10-11 18:02:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:00,073 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 430 transitions. [2024-10-11 18:02:00,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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) [2024-10-11 18:02:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 430 transitions. [2024-10-11 18:02:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-11 18:02:00,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:00,075 INFO L215 NwaCegarLoop]: trace histogram [64, 64, 64, 2, 2, 2, 1, 1, 1] [2024-10-11 18:02:00,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 18:02:00,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:00,275 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:02:00,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1002599432, now seen corresponding path program 1 times [2024-10-11 18:02:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:02:00,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704917990] [2024-10-11 18:02:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:00,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:02:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 3140 refuted. 0 times theorem prover too weak. 3040 trivial. 0 not checked. [2024-10-11 18:02:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:02:00,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704917990] [2024-10-11 18:02:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704917990] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:00,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588828848] [2024-10-11 18:02:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:00,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:00,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:02:00,722 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:02:00,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 18:02:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:00,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 18:02:00,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:00,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-10-11 18:02:00,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-10-11 18:02:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 3140 refuted. 0 times theorem prover too weak. 3040 trivial. 0 not checked. [2024-10-11 18:02:01,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 3140 refuted. 0 times theorem prover too weak. 3040 trivial. 0 not checked. [2024-10-11 18:02:02,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588828848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:02:02,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:02:02,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 2] total 7 [2024-10-11 18:02:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796861212] [2024-10-11 18:02:02,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:02,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:02:02,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:02:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:02:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-10-11 18:02:02,164 INFO L87 Difference]: Start difference. First operand 421 states and 430 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:02,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:02,235 INFO L93 Difference]: Finished difference Result 720 states and 732 transitions. [2024-10-11 18:02:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:02:02,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-10-11 18:02:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:02,238 INFO L225 Difference]: With dead ends: 720 [2024-10-11 18:02:02,245 INFO L226 Difference]: Without dead ends: 720 [2024-10-11 18:02:02,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-10-11 18:02:02,245 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:02,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:02:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-10-11 18:02:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2024-10-11 18:02:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 717 states have (on average 1.0209205020920502) internal successors, (732), 719 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 732 transitions. [2024-10-11 18:02:02,252 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 732 transitions. Word has length 201 [2024-10-11 18:02:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:02,253 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 732 transitions. [2024-10-11 18:02:02,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 732 transitions. [2024-10-11 18:02:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-10-11 18:02:02,256 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:02,256 INFO L215 NwaCegarLoop]: trace histogram [128, 128, 128, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:02,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 18:02:02,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:02,457 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)] === [2024-10-11 18:02:02,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash -179340048, now seen corresponding path program 2 times [2024-10-11 18:02:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:02:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928140000] [2024-10-11 18:02:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:02,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:02:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24926 backedges. 0 proven. 18844 refuted. 0 times theorem prover too weak. 6082 trivial. 0 not checked. [2024-10-11 18:02:03,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:02:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928140000] [2024-10-11 18:02:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928140000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919805873] [2024-10-11 18:02:03,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:02:03,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:03,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:02:03,208 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:02:03,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 18:02:03,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 18:02:03,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:02:03,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 18:02:03,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 24926 backedges. 3140 proven. 12564 refuted. 0 times theorem prover too weak. 9222 trivial. 0 not checked. [2024-10-11 18:02:04,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:05,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-11 18:02:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 24926 backedges. 3140 proven. 12564 refuted. 0 times theorem prover too weak. 9222 trivial. 0 not checked. [2024-10-11 18:02:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919805873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:02:05,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:02:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-10-11 18:02:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705224134] [2024-10-11 18:02:05,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:05,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 18:02:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:02:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 18:02:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-10-11 18:02:05,784 INFO L87 Difference]: Start difference. First operand 720 states and 732 transitions. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:06,001 INFO L93 Difference]: Finished difference Result 725 states and 737 transitions. [2024-10-11 18:02:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 18:02:06,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2024-10-11 18:02:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:06,003 INFO L225 Difference]: With dead ends: 725 [2024-10-11 18:02:06,003 INFO L226 Difference]: Without dead ends: 725 [2024-10-11 18:02:06,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2024-10-11 18:02:06,004 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 96 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:06,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 82 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:02:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-10-11 18:02:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 723. [2024-10-11 18:02:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 720 states have (on average 1.0194444444444444) internal successors, (734), 722 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 734 transitions. [2024-10-11 18:02:06,013 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 734 transitions. Word has length 408 [2024-10-11 18:02:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:06,014 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 734 transitions. [2024-10-11 18:02:06,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 734 transitions. [2024-10-11 18:02:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-10-11 18:02:06,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:06,019 INFO L215 NwaCegarLoop]: trace histogram [160, 160, 160, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1] [2024-10-11 18:02:06,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 18:02:06,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 18:02:06,220 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)] === [2024-10-11 18:02:06,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash -278848377, now seen corresponding path program 3 times [2024-10-11 18:02:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:02:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461305431] [2024-10-11 18:02:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:02:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 39012 backedges. 0 proven. 31405 refuted. 0 times theorem prover too weak. 7607 trivial. 0 not checked. [2024-10-11 18:02:07,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:02:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461305431] [2024-10-11 18:02:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461305431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727555350] [2024-10-11 18:02:07,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 18:02:07,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:07,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:02:07,136 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:02:07,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 18:02:07,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 18:02:07,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:02:07,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 18:02:07,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:07,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-11 18:02:07,328 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 [2024-10-11 18:02:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 39012 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 39007 trivial. 0 not checked. [2024-10-11 18:02:08,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727555350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:08,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:02:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-10-11 18:02:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107483499] [2024-10-11 18:02:08,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:08,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:02:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:02:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:02:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:02:08,629 INFO L87 Difference]: Start difference. First operand 723 states and 734 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:08,687 INFO L93 Difference]: Finished difference Result 721 states and 730 transitions. [2024-10-11 18:02:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:02:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2024-10-11 18:02:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:08,692 INFO L225 Difference]: With dead ends: 721 [2024-10-11 18:02:08,692 INFO L226 Difference]: Without dead ends: 721 [2024-10-11 18:02:08,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-10-11 18:02:08,693 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:08,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 15 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:02:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-10-11 18:02:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 522. [2024-10-11 18:02:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 1.0134357005758157) internal successors, (528), 521 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 528 transitions. [2024-10-11 18:02:08,702 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 528 transitions. Word has length 511 [2024-10-11 18:02:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:08,703 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 528 transitions. [2024-10-11 18:02:08,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 528 transitions. [2024-10-11 18:02:08,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2024-10-11 18:02:08,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:08,712 INFO L215 NwaCegarLoop]: trace histogram [160, 160, 160, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:08,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 18:02:08,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:08,913 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:02:08,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1420546934, now seen corresponding path program 1 times [2024-10-11 18:02:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:02:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294223443] [2024-10-11 18:02:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:02:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 39040 backedges. 0 proven. 31405 refuted. 0 times theorem prover too weak. 7635 trivial. 0 not checked. [2024-10-11 18:02:09,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:02:09,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294223443] [2024-10-11 18:02:09,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294223443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:09,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092468910] [2024-10-11 18:02:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:09,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:09,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:02:09,717 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:02:09,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 18:02:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:10,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 2027 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-11 18:02:10,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 39040 backedges. 0 proven. 32890 refuted. 0 times theorem prover too weak. 6150 trivial. 0 not checked. [2024-10-11 18:02:11,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:02:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 39040 backedges. 453 proven. 31445 refuted. 0 times theorem prover too weak. 7142 trivial. 0 not checked. [2024-10-11 18:02:12,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092468910] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:02:12,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:02:12,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 34, 13] total 47 [2024-10-11 18:02:12,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429266039] [2024-10-11 18:02:12,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:02:12,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-11 18:02:12,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:02:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-11 18:02:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=1689, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 18:02:12,156 INFO L87 Difference]: Start difference. First operand 522 states and 528 transitions. Second operand has 48 states, 48 states have (on average 3.7916666666666665) internal successors, (182), 47 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:13,664 INFO L93 Difference]: Finished difference Result 1243 states and 1256 transitions. [2024-10-11 18:02:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-11 18:02:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.7916666666666665) internal successors, (182), 47 states have internal predecessors, (182), 0 states have call successors, (0), 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 521 [2024-10-11 18:02:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:13,669 INFO L225 Difference]: With dead ends: 1243 [2024-10-11 18:02:13,669 INFO L226 Difference]: Without dead ends: 1243 [2024-10-11 18:02:13,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1001 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=783, Invalid=1973, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 18:02:13,670 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 126 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:13,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 143 Invalid, 3558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-11 18:02:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2024-10-11 18:02:13,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1243. [2024-10-11 18:02:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 1.0112721417069244) internal successors, (1256), 1242 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1256 transitions. [2024-10-11 18:02:13,682 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1256 transitions. Word has length 521 [2024-10-11 18:02:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:13,683 INFO L471 AbstractCegarLoop]: Abstraction has 1243 states and 1256 transitions. [2024-10-11 18:02:13,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.7916666666666665) internal successors, (182), 47 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1256 transitions. [2024-10-11 18:02:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2024-10-11 18:02:13,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:02:13,691 INFO L215 NwaCegarLoop]: trace histogram [384, 384, 384, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:13,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 18:02:13,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 18:02:13,895 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-11 18:02:13,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:02:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 363410059, now seen corresponding path program 2 times [2024-10-11 18:02:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:02:13,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153805759] [2024-10-11 18:02:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:02:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:02:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:02:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 225702 backedges. 0 proven. 207252 refuted. 0 times theorem prover too weak. 18450 trivial. 0 not checked. [2024-10-11 18:02:16,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:02:16,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153805759] [2024-10-11 18:02:16,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153805759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:02:16,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282967419] [2024-10-11 18:02:16,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:02:16,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:16,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:02:16,408 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:02:16,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 18:02:16,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 18:02:16,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:02:16,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 18:02:16,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:02:21,661 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#mask~0#1.base_18| Int) (|v_ULTIMATE.start_main_~#b~0#1.base_27| Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_18|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27|) 0) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27| v_DerPreprocessor_3) |v_ULTIMATE.start_main_~#mask~0#1.base_18| v_DerPreprocessor_4) |v_ULTIMATE.start_main_~#b~0#1.base_27|) v_DerPreprocessor_3) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_18| 0)))) is different from true [2024-10-11 18:02:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 225702 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 225690 trivial. 0 not checked. [2024-10-11 18:02:21,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:02:21,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282967419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:02:21,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:02:21,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 17 [2024-10-11 18:02:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840672216] [2024-10-11 18:02:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:02:21,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:02:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:02:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:02:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2024-10-11 18:02:21,673 INFO L87 Difference]: Start difference. First operand 1243 states and 1256 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:02:21,695 INFO L93 Difference]: Finished difference Result 1242 states and 1255 transitions. [2024-10-11 18:02:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:02:21,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1242 [2024-10-11 18:02:21,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:02:21,697 INFO L225 Difference]: With dead ends: 1242 [2024-10-11 18:02:21,697 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 18:02:21,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1239 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2024-10-11 18:02:21,698 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:02:21,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2024-10-11 18:02:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 18:02:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 18:02:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 18:02:21,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1242 [2024-10-11 18:02:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:02:21,699 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 18:02:21,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:02:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 18:02:21,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 18:02:21,702 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (7 of 8 remaining) [2024-10-11 18:02:21,702 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-10-11 18:02:21,702 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-10-11 18:02:21,702 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2024-10-11 18:02:21,702 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-10-11 18:02:21,702 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-10-11 18:02:21,703 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-10-11 18:02:21,703 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-10-11 18:02:21,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-11 18:02:21,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:02:21,909 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:02:21,911 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 18:02:21,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:02:21 BoogieIcfgContainer [2024-10-11 18:02:21,913 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 18:02:21,913 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 18:02:21,913 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 18:02:21,913 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 18:02:21,914 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:01:44" (3/4) ... [2024-10-11 18:02:21,915 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 18:02:21,920 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-10-11 18:02:21,920 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 18:02:21,920 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 18:02:21,921 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 18:02:21,983 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 18:02:21,984 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 18:02:21,984 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 18:02:21,984 INFO L158 Benchmark]: Toolchain (without parser) took 37671.29ms. Allocated memory was 184.5MB in the beginning and 891.3MB in the end (delta: 706.7MB). Free memory was 126.2MB in the beginning and 501.0MB in the end (delta: -374.8MB). Peak memory consumption was 336.2MB. Max. memory is 16.1GB. [2024-10-11 18:02:21,984 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:02:21,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.48ms. Allocated memory is still 184.5MB. Free memory was 126.2MB in the beginning and 114.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 18:02:21,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.94ms. Allocated memory is still 184.5MB. Free memory was 114.8MB in the beginning and 113.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 18:02:21,985 INFO L158 Benchmark]: Boogie Preprocessor took 31.65ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 111.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 18:02:21,985 INFO L158 Benchmark]: RCFGBuilder took 270.94ms. Allocated memory is still 184.5MB. Free memory was 111.1MB in the beginning and 96.0MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 18:02:21,985 INFO L158 Benchmark]: TraceAbstraction took 37071.62ms. Allocated memory was 184.5MB in the beginning and 891.3MB in the end (delta: 706.7MB). Free memory was 95.6MB in the beginning and 505.2MB in the end (delta: -409.6MB). Peak memory consumption was 300.5MB. Max. memory is 16.1GB. [2024-10-11 18:02:21,986 INFO L158 Benchmark]: Witness Printer took 70.68ms. Allocated memory is still 891.3MB. Free memory was 505.2MB in the beginning and 501.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 18:02:21,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.48ms. Allocated memory is still 184.5MB. Free memory was 126.2MB in the beginning and 114.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.94ms. Allocated memory is still 184.5MB. Free memory was 114.8MB in the beginning and 113.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.65ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 111.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.94ms. Allocated memory is still 184.5MB. Free memory was 111.1MB in the beginning and 96.0MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 37071.62ms. Allocated memory was 184.5MB in the beginning and 891.3MB in the end (delta: 706.7MB). Free memory was 95.6MB in the beginning and 505.2MB in the end (delta: -409.6MB). Peak memory consumption was 300.5MB. Max. memory is 16.1GB. * Witness Printer took 70.68ms. Allocated memory is still 891.3MB. Free memory was 505.2MB in the beginning and 501.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 37.0s, OverallIterations: 24, TraceHistogramMax: 384, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1021 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1021 mSDsluCounter, 932 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 32 IncrementalHoareTripleChecker+Unchecked, 672 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6062 IncrementalHoareTripleChecker+Invalid, 6225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 260 mSDtfsCounter, 6062 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5153 GetRequests, 4697 SyntacticMatches, 2 SemanticMatches, 454 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 3518 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1243occurred in iteration=23, InterpolantAutomatonStates: 293, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 255 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 6840 NumberOfCodeBlocks, 4909 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 8279 ConstructedInterpolants, 20 QuantifiedInterpolants, 76766 SizeOfPredicates, 25 NumberOfNonLiveVariables, 6233 ConjunctsInSsa, 311 ConjunctsInUnsatCore, 57 InterpolantComputations, 10 PerfectInterpolantSequences, 360394/751609 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 18:02:22,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE