./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loop-acceleration/array3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loop-acceleration/array3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 07:05:14,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 07:05:14,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 07:05:14,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 07:05:14,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 07:05:14,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 07:05:14,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 07:05:14,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 07:05:14,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 07:05:14,790 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 07:05:14,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 07:05:14,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 07:05:14,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 07:05:14,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 07:05:14,792 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 07:05:14,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 07:05:14,793 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 07:05:14,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 07:05:14,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 07:05:14,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 07:05:14,793 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 07:05:14,794 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 07:05:14,799 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 07:05:14,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 07:05:14,800 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 07:05:14,800 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 07:05:14,800 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 07:05:14,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 07:05:14,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 07:05:14,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 07:05:14,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 07:05:14,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 07:05:14,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 07:05:14,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 07:05:14,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 07:05:14,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 07:05:14,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 07:05:14,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 07:05:14,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 07:05:14,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 07:05:14,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 07:05:14,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 07:05:14,803 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea [2024-11-19 07:05:15,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 07:05:15,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 07:05:15,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 07:05:15,033 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 07:05:15,034 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 07:05:15,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array3.i [2024-11-19 07:05:16,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 07:05:16,535 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 07:05:16,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i [2024-11-19 07:05:16,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9863b83a4/78fd10667b314aabba06de756531de7a/FLAG92634da81 [2024-11-19 07:05:16,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9863b83a4/78fd10667b314aabba06de756531de7a [2024-11-19 07:05:16,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 07:05:16,570 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 07:05:16,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 07:05:16,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 07:05:16,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 07:05:16,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f56b400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16, skipping insertion in model container [2024-11-19 07:05:16,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 07:05:16,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 07:05:16,725 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 07:05:16,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 07:05:16,749 INFO L204 MainTranslator]: Completed translation [2024-11-19 07:05:16,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16 WrapperNode [2024-11-19 07:05:16,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 07:05:16,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 07:05:16,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 07:05:16,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 07:05:16,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,773 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2024-11-19 07:05:16,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 07:05:16,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 07:05:16,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 07:05:16,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 07:05:16,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,792 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 07:05:16,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 07:05:16,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 07:05:16,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 07:05:16,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 07:05:16,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (1/1) ... [2024-11-19 07:05:16,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 07:05:16,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:16,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 07:05:16,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 07:05:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 07:05:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 07:05:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 07:05:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 07:05:16,952 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 07:05:16,955 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 07:05:17,100 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-19 07:05:17,100 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 07:05:17,111 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 07:05:17,111 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 07:05:17,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:05:17 BoogieIcfgContainer [2024-11-19 07:05:17,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 07:05:17,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 07:05:17,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 07:05:17,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 07:05:17,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:05:16" (1/3) ... [2024-11-19 07:05:17,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af13980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:05:17, skipping insertion in model container [2024-11-19 07:05:17,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:16" (2/3) ... [2024-11-19 07:05:17,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af13980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:05:17, skipping insertion in model container [2024-11-19 07:05:17,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:05:17" (3/3) ... [2024-11-19 07:05:17,118 INFO L112 eAbstractionObserver]: Analyzing ICFG array3.i [2024-11-19 07:05:17,130 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 07:05:17,131 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 07:05:17,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 07:05:17,169 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;@3dbe866c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 07:05:17,169 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 07:05:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 20 states have (on average 1.65) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 07:05:17,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:17,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 07:05:17,178 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:17,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:17,182 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-19 07:05:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:17,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208419129] [2024-11-19 07:05:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:17,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:17,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208419129] [2024-11-19 07:05:17,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208419129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:05:17,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:05:17,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:05:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598961264] [2024-11-19 07:05:17,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:05:17,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:05:17,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:17,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:05:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:05:17,456 INFO L87 Difference]: Start difference. First operand has 27 states, 20 states have (on average 1.65) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-19 07:05:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:17,484 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2024-11-19 07:05:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:05:17,487 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 [2024-11-19 07:05:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:17,492 INFO L225 Difference]: With dead ends: 24 [2024-11-19 07:05:17,492 INFO L226 Difference]: Without dead ends: 22 [2024-11-19 07:05:17,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:05:17,496 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:17,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:05:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-19 07:05:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-19 07:05:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-19 07:05:17,521 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 4 [2024-11-19 07:05:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:17,522 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-19 07:05:17,522 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) [2024-11-19 07:05:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-19 07:05:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 07:05:17,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:17,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 07:05:17,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 07:05:17,525 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:17,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-19 07:05:17,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:17,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709121161] [2024-11-19 07:05:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:17,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:17,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:17,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709121161] [2024-11-19 07:05:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709121161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:05:17,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:05:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:05:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831092965] [2024-11-19 07:05:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:05:17,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:05:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:17,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:05:17,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:05:17,654 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. 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) [2024-11-19 07:05:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:17,690 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-19 07:05:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:05:17,691 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 [2024-11-19 07:05:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:17,691 INFO L225 Difference]: With dead ends: 26 [2024-11-19 07:05:17,691 INFO L226 Difference]: Without dead ends: 26 [2024-11-19 07:05:17,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:05:17,692 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:17,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:05:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-19 07:05:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-19 07:05:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-19 07:05:17,699 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 4 [2024-11-19 07:05:17,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:17,699 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-19 07:05:17,699 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) [2024-11-19 07:05:17,700 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-19 07:05:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 07:05:17,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:17,700 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:17,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 07:05:17,700 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:17,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2024-11-19 07:05:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:17,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891197365] [2024-11-19 07:05:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:17,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:17,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:17,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891197365] [2024-11-19 07:05:17,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891197365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:05:17,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867500035] [2024-11-19 07:05:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:17,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:17,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:17,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 07:05:17,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 07:05:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:17,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 07:05:17,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:05:18,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 07:05:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:18,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:05:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867500035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:05:18,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:05:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-19 07:05:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047819060] [2024-11-19 07:05:18,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:05:18,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 07:05:18,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 07:05:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 07:05:18,131 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:18,209 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-19 07:05:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 07:05:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 07:05:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:18,210 INFO L225 Difference]: With dead ends: 34 [2024-11-19 07:05:18,211 INFO L226 Difference]: Without dead ends: 34 [2024-11-19 07:05:18,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-19 07:05:18,212 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:18,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 52 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:05:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-19 07:05:18,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-19 07:05:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2024-11-19 07:05:18,215 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 8 [2024-11-19 07:05:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:18,216 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2024-11-19 07:05:18,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2024-11-19 07:05:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 07:05:18,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:18,217 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-19 07:05:18,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 07:05:18,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:18,422 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:18,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash 519338591, now seen corresponding path program 1 times [2024-11-19 07:05:18,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:18,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843544245] [2024-11-19 07:05:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 07:05:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843544245] [2024-11-19 07:05:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843544245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:05:18,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:05:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 07:05:18,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039602522] [2024-11-19 07:05:18,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:05:18,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 07:05:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 07:05:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:05:18,559 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:18,583 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-19 07:05:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 07:05:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-19 07:05:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:18,584 INFO L225 Difference]: With dead ends: 39 [2024-11-19 07:05:18,584 INFO L226 Difference]: Without dead ends: 39 [2024-11-19 07:05:18,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:05:18,585 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:18,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:05:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-19 07:05:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-11-19 07:05:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-19 07:05:18,591 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 21 [2024-11-19 07:05:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:18,591 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-19 07:05:18,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:18,592 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-19 07:05:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 07:05:18,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:18,592 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:18,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 07:05:18,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:18,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1096066870, now seen corresponding path program 1 times [2024-11-19 07:05:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984968865] [2024-11-19 07:05:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 07:05:18,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984968865] [2024-11-19 07:05:18,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984968865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:05:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008645425] [2024-11-19 07:05:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:18,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:18,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:18,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 07:05:18,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 07:05:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:18,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 07:05:18,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:05:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 07:05:18,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:05:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 07:05:18,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008645425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:05:18,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:05:18,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 07:05:18,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729378357] [2024-11-19 07:05:18,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:05:18,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 07:05:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 07:05:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 07:05:18,897 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:19,010 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2024-11-19 07:05:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 07:05:19,011 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-19 07:05:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:19,013 INFO L225 Difference]: With dead ends: 107 [2024-11-19 07:05:19,014 INFO L226 Difference]: Without dead ends: 107 [2024-11-19 07:05:19,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 07:05:19,018 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 106 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:19,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 63 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:05:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-19 07:05:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2024-11-19 07:05:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 96 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2024-11-19 07:05:19,025 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 25 [2024-11-19 07:05:19,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:19,025 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2024-11-19 07:05:19,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:19,026 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2024-11-19 07:05:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 07:05:19,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:19,026 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:19,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 07:05:19,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:19,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:19,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 625418724, now seen corresponding path program 2 times [2024-11-19 07:05:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:19,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511337452] [2024-11-19 07:05:19,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 07:05:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:19,252 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 07:05:19,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:05:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 07:05:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511337452] [2024-11-19 07:05:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511337452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:05:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905931237] [2024-11-19 07:05:19,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 07:05:19,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:19,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:19,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 07:05:19,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 07:05:19,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 07:05:19,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:05:19,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 07:05:19,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:05:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 07:05:19,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:05:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 07:05:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905931237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:05:19,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:05:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-19 07:05:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209495166] [2024-11-19 07:05:19,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:05:19,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 07:05:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 07:05:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 07:05:19,796 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:19,991 INFO L93 Difference]: Finished difference Result 215 states and 260 transitions. [2024-11-19 07:05:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 07:05:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-19 07:05:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:19,993 INFO L225 Difference]: With dead ends: 215 [2024-11-19 07:05:19,993 INFO L226 Difference]: Without dead ends: 215 [2024-11-19 07:05:19,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 07:05:19,994 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 330 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:19,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 96 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 07:05:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-19 07:05:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 193. [2024-11-19 07:05:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.2526315789473683) internal successors, (238), 192 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2024-11-19 07:05:20,003 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 49 [2024-11-19 07:05:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:20,003 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2024-11-19 07:05:20,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2024-11-19 07:05:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-19 07:05:20,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:20,005 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:20,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 07:05:20,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:20,210 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:20,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1805457728, now seen corresponding path program 3 times [2024-11-19 07:05:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:20,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490982389] [2024-11-19 07:05:20,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 07:05:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:20,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 07:05:20,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:05:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-19 07:05:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490982389] [2024-11-19 07:05:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490982389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:05:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506064649] [2024-11-19 07:05:20,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 07:05:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:20,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 07:05:20,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 07:05:20,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 07:05:20,350 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:05:20,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 07:05:20,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:05:20,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 07:05:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-19 07:05:20,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:05:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-19 07:05:20,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506064649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:05:20,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:05:20,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 07:05:20,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904195497] [2024-11-19 07:05:20,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:05:20,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 07:05:20,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 07:05:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-19 07:05:20,985 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:21,070 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2024-11-19 07:05:21,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 07:05:21,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 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) Word has length 97 [2024-11-19 07:05:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:21,071 INFO L225 Difference]: With dead ends: 196 [2024-11-19 07:05:21,072 INFO L226 Difference]: Without dead ends: 196 [2024-11-19 07:05:21,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-19 07:05:21,072 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:21,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 51 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:05:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-19 07:05:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 119. [2024-11-19 07:05:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.0603448275862069) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2024-11-19 07:05:21,085 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 97 [2024-11-19 07:05:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:21,085 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2024-11-19 07:05:21,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2024-11-19 07:05:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-19 07:05:21,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:21,086 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:21,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 07:05:21,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:21,287 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:21,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:21,288 INFO L85 PathProgramCache]: Analyzing trace with hash 132966792, now seen corresponding path program 1 times [2024-11-19 07:05:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:21,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597979003] [2024-11-19 07:05:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:21,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:21,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597979003] [2024-11-19 07:05:21,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597979003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:05:21,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443915790] [2024-11-19 07:05:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:21,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:21,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:21,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 07:05:21,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 07:05:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:21,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 07:05:21,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:05:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:22,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:05:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:22,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443915790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:05:22,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:05:22,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-19 07:05:22,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827467305] [2024-11-19 07:05:22,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:05:22,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 07:05:22,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 07:05:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 07:05:22,929 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 49 states, 49 states have (on average 3.938775510204082) internal successors, (193), 49 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:23,348 INFO L93 Difference]: Finished difference Result 431 states and 520 transitions. [2024-11-19 07:05:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-19 07:05:23,349 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.938775510204082) internal successors, (193), 49 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-19 07:05:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:23,350 INFO L225 Difference]: With dead ends: 431 [2024-11-19 07:05:23,351 INFO L226 Difference]: Without dead ends: 431 [2024-11-19 07:05:23,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 07:05:23,352 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 602 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:23,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 215 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 07:05:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-19 07:05:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 215. [2024-11-19 07:05:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 212 states have (on average 1.0330188679245282) internal successors, (219), 214 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2024-11-19 07:05:23,360 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 98 [2024-11-19 07:05:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:23,361 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2024-11-19 07:05:23,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.938775510204082) internal successors, (193), 49 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2024-11-19 07:05:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-19 07:05:23,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:23,363 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:23,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 07:05:23,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:23,567 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:23,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash 708037072, now seen corresponding path program 2 times [2024-11-19 07:05:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280560499] [2024-11-19 07:05:23,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 07:05:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:23,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 07:05:23,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:05:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-19 07:05:23,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:23,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280560499] [2024-11-19 07:05:23,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280560499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:05:23,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:05:23,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 07:05:23,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505856409] [2024-11-19 07:05:23,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:05:23,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 07:05:23,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 07:05:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:05:23,617 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:23,625 INFO L93 Difference]: Finished difference Result 214 states and 218 transitions. [2024-11-19 07:05:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 07:05:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-11-19 07:05:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:23,627 INFO L225 Difference]: With dead ends: 214 [2024-11-19 07:05:23,627 INFO L226 Difference]: Without dead ends: 212 [2024-11-19 07:05:23,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:05:23,627 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:23,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 32 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:05:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-19 07:05:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-19 07:05:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.0285714285714285) 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) [2024-11-19 07:05:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 216 transitions. [2024-11-19 07:05:23,633 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 216 transitions. Word has length 194 [2024-11-19 07:05:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:23,633 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 216 transitions. [2024-11-19 07:05:23,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 216 transitions. [2024-11-19 07:05:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 07:05:23,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:23,639 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:23,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 07:05:23,639 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:23,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash 473911727, now seen corresponding path program 1 times [2024-11-19 07:05:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918936726] [2024-11-19 07:05:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-19 07:05:23,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918936726] [2024-11-19 07:05:23,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918936726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:05:23,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:05:23,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 07:05:23,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911880192] [2024-11-19 07:05:23,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:05:23,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 07:05:23,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:23,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 07:05:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:05:23,880 INFO L87 Difference]: Start difference. First operand 212 states and 216 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:23,895 INFO L93 Difference]: Finished difference Result 214 states and 217 transitions. [2024-11-19 07:05:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 07:05:23,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2024-11-19 07:05:23,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:23,896 INFO L225 Difference]: With dead ends: 214 [2024-11-19 07:05:23,896 INFO L226 Difference]: Without dead ends: 212 [2024-11-19 07:05:23,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:05:23,897 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:23,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:05:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-19 07:05:23,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-19 07:05:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.0238095238095237) 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) [2024-11-19 07:05:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 215 transitions. [2024-11-19 07:05:23,901 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 215 transitions. Word has length 195 [2024-11-19 07:05:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:23,901 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 215 transitions. [2024-11-19 07:05:23,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 215 transitions. [2024-11-19 07:05:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-19 07:05:23,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:23,903 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:05:23,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 07:05:23,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:23,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 321671238, now seen corresponding path program 1 times [2024-11-19 07:05:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160976862] [2024-11-19 07:05:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-19 07:05:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160976862] [2024-11-19 07:05:24,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160976862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:05:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606555439] [2024-11-19 07:05:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:05:24,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:24,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:24,118 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 07:05:24,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 07:05:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:05:24,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 07:05:24,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:05:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 07:05:25,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:05:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 07:05:27,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606555439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:05:27,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:05:27,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 49, 49] total 98 [2024-11-19 07:05:27,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593276215] [2024-11-19 07:05:27,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:05:27,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-19 07:05:27,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:05:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-19 07:05:27,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2024-11-19 07:05:27,545 INFO L87 Difference]: Start difference. First operand 212 states and 215 transitions. Second operand has 98 states, 98 states have (on average 4.071428571428571) internal successors, (399), 98 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:05:29,391 INFO L93 Difference]: Finished difference Result 860 states and 1043 transitions. [2024-11-19 07:05:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-19 07:05:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.071428571428571) internal successors, (399), 98 states have internal predecessors, (399), 0 states have call successors, (0), 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 199 [2024-11-19 07:05:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:05:29,393 INFO L225 Difference]: With dead ends: 860 [2024-11-19 07:05:29,393 INFO L226 Difference]: Without dead ends: 766 [2024-11-19 07:05:29,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2024-11-19 07:05:29,395 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1649 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 07:05:29,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 332 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 07:05:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-11-19 07:05:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 765. [2024-11-19 07:05:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 763 states have (on average 1.1218872870249017) internal successors, (856), 764 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:29,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 856 transitions. [2024-11-19 07:05:29,406 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 856 transitions. Word has length 199 [2024-11-19 07:05:29,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:05:29,406 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 856 transitions. [2024-11-19 07:05:29,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.071428571428571) internal successors, (399), 98 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:05:29,407 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 856 transitions. [2024-11-19 07:05:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-19 07:05:29,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:05:29,410 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-19 07:05:29,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 07:05:29,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:29,615 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-19 07:05:29,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:05:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 327242733, now seen corresponding path program 4 times [2024-11-19 07:05:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:05:29,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352221731] [2024-11-19 07:05:29,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 07:05:29,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:05:29,853 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 07:05:29,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:05:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17606 backedges. 17298 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:05:36,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:05:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352221731] [2024-11-19 07:05:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352221731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:05:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192733720] [2024-11-19 07:05:36,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 07:05:36,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:05:36,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:05:36,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 07:05:36,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process