./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-15/cstrchr_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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/termination-15/cstrchr_reverse_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash c2261b8075e5a5018e09c71b2ef98f1a55d20ac7ba7a361137d9c5ebaba61150 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 07:38:17,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:38:17,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-09 07:38:17,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:38:17,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:38:17,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:38:17,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:38:17,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:38:17,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 07:38:17,175 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 07:38:17,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:38:17,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:38:17,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:38:17,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:38:17,180 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 07:38:17,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:38:17,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:38:17,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:38:17,181 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:38:17,181 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:38:17,182 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:38:17,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:38:17,186 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:38:17,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:38:17,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:38:17,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:38:17,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:38:17,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:38:17,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:38:17,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:38:17,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:38:17,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:38:17,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:38:17,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 07:38:17,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:38:17,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:38:17,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 07:38:17,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 07:38:17,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:38:17,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2261b8075e5a5018e09c71b2ef98f1a55d20ac7ba7a361137d9c5ebaba61150 [2024-11-09 07:38:17,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:38:17,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:38:17,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:38:17,514 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:38:17,515 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:38:17,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrchr_reverse_alloca.i [2024-11-09 07:38:18,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:38:19,220 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:38:19,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrchr_reverse_alloca.i [2024-11-09 07:38:19,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e5fbd288/084bd66c53c344a8b2fea1ccaca44df2/FLAG94b55b0d1 [2024-11-09 07:38:19,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e5fbd288/084bd66c53c344a8b2fea1ccaca44df2 [2024-11-09 07:38:19,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:38:19,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:38:19,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:38:19,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:38:19,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:38:19,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b751ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19, skipping insertion in model container [2024-11-09 07:38:19,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:38:19,667 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:38:19,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:38:19,685 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:38:19,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:38:19,804 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:38:19,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19 WrapperNode [2024-11-09 07:38:19,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:38:19,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:38:19,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:38:19,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:38:19,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,866 INFO L138 Inliner]: procedures = 152, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-09 07:38:19,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:38:19,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:38:19,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:38:19,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:38:19,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,901 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1]. [2024-11-09 07:38:19,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:38:19,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:38:19,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:38:19,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:38:19,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (1/1) ... [2024-11-09 07:38:19,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:38:19,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:38:19,956 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) [2024-11-09 07:38:19,960 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 [2024-11-09 07:38:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 07:38:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 07:38:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:38:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:38:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:38:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:38:20,088 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:38:20,091 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:38:20,282 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-09 07:38:20,283 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:38:20,294 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:38:20,295 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 07:38:20,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:38:20 BoogieIcfgContainer [2024-11-09 07:38:20,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:38:20,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:38:20,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:38:20,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:38:20,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:38:19" (1/3) ... [2024-11-09 07:38:20,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362fe465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:38:20, skipping insertion in model container [2024-11-09 07:38:20,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:19" (2/3) ... [2024-11-09 07:38:20,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362fe465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:38:20, skipping insertion in model container [2024-11-09 07:38:20,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:38:20" (3/3) ... [2024-11-09 07:38:20,306 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrchr_reverse_alloca.i [2024-11-09 07:38:20,320 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:38:20,320 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-09 07:38:20,352 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:38:20,358 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;@36a65c3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:38:20,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-09 07:38:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:38:20,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:20,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:38:20,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:20,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 28693828, now seen corresponding path program 1 times [2024-11-09 07:38:20,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:20,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486375636] [2024-11-09 07:38:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:20,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:20,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486375636] [2024-11-09 07:38:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486375636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:20,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:38:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729171532] [2024-11-09 07:38:20,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:20,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:38:20,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:20,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:38:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:38:20,702 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:20,768 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-09 07:38:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:38:20,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 07:38:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:20,778 INFO L225 Difference]: With dead ends: 26 [2024-11-09 07:38:20,778 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 07:38:20,780 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 [2024-11-09 07:38:20,784 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:20,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:38:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 07:38:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 07:38:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.625) 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) [2024-11-09 07:38:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-09 07:38:20,842 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 5 [2024-11-09 07:38:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:20,842 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-09 07:38:20,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:20,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-09 07:38:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:38:20,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:20,848 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:38:20,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:38:20,848 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:20,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash 28693829, now seen corresponding path program 1 times [2024-11-09 07:38:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:20,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881510781] [2024-11-09 07:38:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:21,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881510781] [2024-11-09 07:38:21,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881510781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:21,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:21,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:38:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951112238] [2024-11-09 07:38:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:21,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:38:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:38:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:38:21,151 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:21,211 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2024-11-09 07:38:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:38:21,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 07:38:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:21,213 INFO L225 Difference]: With dead ends: 27 [2024-11-09 07:38:21,213 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 07:38:21,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:38:21,215 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:21,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 59 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:38:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 07:38:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-09 07:38:21,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-09 07:38:21,220 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 5 [2024-11-09 07:38:21,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:21,220 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-09 07:38:21,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,221 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-09 07:38:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:38:21,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:21,221 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:38:21,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:38:21,222 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:21,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 28695751, now seen corresponding path program 1 times [2024-11-09 07:38:21,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:21,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486445155] [2024-11-09 07:38:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:21,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:21,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:21,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486445155] [2024-11-09 07:38:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486445155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:21,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:38:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86209130] [2024-11-09 07:38:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:21,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:38:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:21,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:38:21,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:38:21,415 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:21,474 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-09 07:38:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:38:21,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 07:38:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:21,476 INFO L225 Difference]: With dead ends: 25 [2024-11-09 07:38:21,476 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 07:38:21,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:38:21,478 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:21,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 71 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:38:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 07:38:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-09 07:38:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-09 07:38:21,485 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 5 [2024-11-09 07:38:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:21,485 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-09 07:38:21,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-09 07:38:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:38:21,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:21,486 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:21,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:38:21,486 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:21,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1804964393, now seen corresponding path program 1 times [2024-11-09 07:38:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864975547] [2024-11-09 07:38:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864975547] [2024-11-09 07:38:21,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864975547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:21,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:21,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:38:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707202512] [2024-11-09 07:38:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:21,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:38:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:38:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:38:21,573 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:21,626 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-11-09 07:38:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:38:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:38:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:21,628 INFO L225 Difference]: With dead ends: 20 [2024-11-09 07:38:21,628 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 07:38:21,629 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 [2024-11-09 07:38:21,630 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:21,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:38:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 07:38:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 07:38:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 19 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) [2024-11-09 07:38:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-09 07:38:21,636 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2024-11-09 07:38:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:21,636 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-09 07:38:21,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-09 07:38:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:38:21,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:21,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:21,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:38:21,637 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:21,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1804964394, now seen corresponding path program 1 times [2024-11-09 07:38:21,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:21,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875501291] [2024-11-09 07:38:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:21,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875501291] [2024-11-09 07:38:21,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875501291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:21,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:21,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:38:21,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580445246] [2024-11-09 07:38:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:21,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:38:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:38:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:38:21,807 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:21,874 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-09 07:38:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:38:21,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:38:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:21,875 INFO L225 Difference]: With dead ends: 22 [2024-11-09 07:38:21,875 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 07:38:21,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:38:21,877 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:21,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:38:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 07:38:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 07:38:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) 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) [2024-11-09 07:38:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-09 07:38:21,884 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2024-11-09 07:38:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:21,885 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-09 07:38:21,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-09 07:38:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:38:21,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:21,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:21,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:38:21,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:21,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1806811436, now seen corresponding path program 1 times [2024-11-09 07:38:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:21,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856993137] [2024-11-09 07:38:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:21,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856993137] [2024-11-09 07:38:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856993137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:22,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:38:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707270159] [2024-11-09 07:38:22,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:22,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:38:22,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:38:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:38:22,215 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:22,270 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-09 07:38:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:38:22,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:38:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:22,273 INFO L225 Difference]: With dead ends: 23 [2024-11-09 07:38:22,273 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 07:38:22,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:38:22,277 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:22,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:38:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 07:38:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2024-11-09 07:38:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-09 07:38:22,284 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 7 [2024-11-09 07:38:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:22,285 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-09 07:38:22,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-09 07:38:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:38:22,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:22,286 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:22,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:38:22,286 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:22,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:22,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1531298047, now seen corresponding path program 1 times [2024-11-09 07:38:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618378162] [2024-11-09 07:38:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:22,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:22,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618378162] [2024-11-09 07:38:22,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618378162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:22,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:22,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:38:22,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127894161] [2024-11-09 07:38:22,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:22,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:38:22,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:38:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:38:22,321 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:22,338 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-11-09 07:38:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:38:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 07:38:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:22,340 INFO L225 Difference]: With dead ends: 20 [2024-11-09 07:38:22,340 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 07:38:22,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:38:22,341 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:22,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:38:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 07:38:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 07:38:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 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) [2024-11-09 07:38:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-09 07:38:22,347 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2024-11-09 07:38:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:22,348 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-09 07:38:22,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-09 07:38:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 07:38:22,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:22,349 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:22,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:38:22,349 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:22,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:22,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1590499358, now seen corresponding path program 1 times [2024-11-09 07:38:22,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:22,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870118296] [2024-11-09 07:38:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:22,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870118296] [2024-11-09 07:38:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870118296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:38:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801202063] [2024-11-09 07:38:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:22,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:38:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:38:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:38:22,593 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:22,679 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-09 07:38:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:38:22,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 07:38:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:22,680 INFO L225 Difference]: With dead ends: 29 [2024-11-09 07:38:22,681 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 07:38:22,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:38:22,682 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:22,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:38:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 07:38:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2024-11-09 07:38:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-09 07:38:22,690 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 13 [2024-11-09 07:38:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:22,690 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-09 07:38:22,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-09 07:38:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 07:38:22,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:22,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:22,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:38:22,693 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:22,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2003403360, now seen corresponding path program 1 times [2024-11-09 07:38:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:22,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664421442] [2024-11-09 07:38:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:23,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:23,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664421442] [2024-11-09 07:38:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664421442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:38:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174413027] [2024-11-09 07:38:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:38:23,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:38:23,017 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) [2024-11-09 07:38:23,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:38:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:23,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 07:38:23,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:38:23,188 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 [2024-11-09 07:38:23,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:38:23,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:38:23,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-09 07:38:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:23,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:38:23,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 07:38:23,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 07:38:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174413027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:38:23,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:38:23,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-09 07:38:23,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319946385] [2024-11-09 07:38:23,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:38:23,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 07:38:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:23,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 07:38:23,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:38:23,728 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:24,065 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-11-09 07:38:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:38:24,066 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 07:38:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:24,068 INFO L225 Difference]: With dead ends: 45 [2024-11-09 07:38:24,068 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 07:38:24,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-09 07:38:24,069 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:24,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 94 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:38:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 07:38:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2024-11-09 07:38:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-09 07:38:24,078 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 13 [2024-11-09 07:38:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:24,078 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-09 07:38:24,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-09 07:38:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:38:24,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:24,079 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:24,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:38:24,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:38:24,280 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:24,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2053675818, now seen corresponding path program 1 times [2024-11-09 07:38:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:24,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661109589] [2024-11-09 07:38:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:24,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661109589] [2024-11-09 07:38:24,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661109589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:24,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:24,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:38:24,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546007468] [2024-11-09 07:38:24,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:24,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:38:24,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:38:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:38:24,365 INFO L87 Difference]: Start difference. First operand 32 states and 36 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) [2024-11-09 07:38:24,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:24,383 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-09 07:38:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:38:24,383 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 14 [2024-11-09 07:38:24,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:24,384 INFO L225 Difference]: With dead ends: 31 [2024-11-09 07:38:24,385 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 07:38:24,385 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 [2024-11-09 07:38:24,385 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:24,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:38:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 07:38:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 07:38:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2024-11-09 07:38:24,388 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2024-11-09 07:38:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:24,388 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2024-11-09 07:38:24,388 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) [2024-11-09 07:38:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2024-11-09 07:38:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:38:24,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:38:24,390 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:24,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 07:38:24,391 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-09 07:38:24,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:38:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1985024788, now seen corresponding path program 2 times [2024-11-09 07:38:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:38:24,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937389115] [2024-11-09 07:38:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:38:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:38:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:38:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:24,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:38:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937389115] [2024-11-09 07:38:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937389115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:38:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701702784] [2024-11-09 07:38:24,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:38:24,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:38:24,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:38:24,808 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) [2024-11-09 07:38:24,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:38:24,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:38:24,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:38:24,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 07:38:24,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:38:24,883 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 [2024-11-09 07:38:24,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:38:24,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:38:24,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-09 07:38:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:25,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:38:25,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 07:38:25,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 07:38:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:38:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701702784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:38:25,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:38:25,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-09 07:38:25,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616739940] [2024-11-09 07:38:25,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:38:25,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 07:38:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:38:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 07:38:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:38:25,520 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:38:25,812 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2024-11-09 07:38:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:38:25,812 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 07:38:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:38:25,813 INFO L225 Difference]: With dead ends: 24 [2024-11-09 07:38:25,813 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:38:25,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=933, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 07:38:25,814 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:38:25,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 58 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:38:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:38:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:38:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:38:25,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2024-11-09 07:38:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:38:25,816 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:38:25,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:38:25,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:38:25,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-09 07:38:25,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-09 07:38:25,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-09 07:38:25,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-09 07:38:25,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-09 07:38:25,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-09 07:38:25,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-09 07:38:25,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-09 07:38:25,821 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-09 07:38:25,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:38:26,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 07:38:26,029 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:38:26,031 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:38:26,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:38:26 BoogieIcfgContainer [2024-11-09 07:38:26,035 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:38:26,036 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:38:26,036 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:38:26,036 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:38:26,037 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:38:20" (3/4) ... [2024-11-09 07:38:26,040 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 07:38:26,048 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 07:38:26,049 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 07:38:26,049 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 07:38:26,049 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:38:26,138 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 07:38:26,139 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 07:38:26,139 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:38:26,140 INFO L158 Benchmark]: Toolchain (without parser) took 6875.13ms. Allocated memory was 167.8MB in the beginning and 281.0MB in the end (delta: 113.2MB). Free memory was 94.7MB in the beginning and 157.7MB in the end (delta: -63.0MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2024-11-09 07:38:26,140 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 167.8MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:38:26,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.23ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 135.6MB in the end (delta: -41.1MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2024-11-09 07:38:26,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.28ms. Allocated memory was 167.8MB in the beginning and 232.8MB in the end (delta: 65.0MB). Free memory was 135.5MB in the beginning and 202.0MB in the end (delta: -66.4MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-11-09 07:38:26,141 INFO L158 Benchmark]: Boogie Preprocessor took 48.25ms. Allocated memory is still 232.8MB. Free memory was 202.0MB in the beginning and 200.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:38:26,141 INFO L158 Benchmark]: RCFGBuilder took 378.14ms. Allocated memory is still 232.8MB. Free memory was 200.9MB in the beginning and 187.1MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 07:38:26,142 INFO L158 Benchmark]: TraceAbstraction took 5736.29ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 186.0MB in the beginning and 162.4MB in the end (delta: 23.6MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2024-11-09 07:38:26,142 INFO L158 Benchmark]: Witness Printer took 103.36ms. Allocated memory is still 281.0MB. Free memory was 162.4MB in the beginning and 157.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 07:38:26,143 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 167.8MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.23ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 135.6MB in the end (delta: -41.1MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.28ms. Allocated memory was 167.8MB in the beginning and 232.8MB in the end (delta: 65.0MB). Free memory was 135.5MB in the beginning and 202.0MB in the end (delta: -66.4MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.25ms. Allocated memory is still 232.8MB. Free memory was 202.0MB in the beginning and 200.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 378.14ms. Allocated memory is still 232.8MB. Free memory was 200.9MB in the beginning and 187.1MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5736.29ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 186.0MB in the beginning and 162.4MB in the end (delta: 23.6MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. * Witness Printer took 103.36ms. Allocated memory is still 281.0MB. Free memory was 162.4MB in the beginning and 157.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 370]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111 mSDsluCounter, 519 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 637 IncrementalHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 165 mSDtfsCounter, 637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=9, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 155 ConstructedInterpolants, 7 QuantifiedInterpolants, 1446 SizeOfPredicates, 8 NumberOfNonLiveVariables, 176 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 3/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 07:38:26,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE