./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/strspn.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/strspn.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 d2c6859ca90ff0da205f4fa2f88d8f61c0c2d9f9f437471b81ea8abc3f9fd19e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 14:29:45,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:29:45,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-20 14:29:45,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:29:45,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:29:45,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:29:45,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:29:45,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:29:45,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:29:45,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:29:45,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:29:45,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:29:45,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:29:45,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:29:45,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:29:45,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:29:45,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:29:45,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:29:45,655 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:29:45,656 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:29:45,656 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:29:45,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:29:45,659 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:29:45,659 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:29:45,660 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:29:45,660 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:29:45,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:29:45,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:29:45,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:29:45,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:29:45,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:29:45,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:29:45,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:29:45,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 14:29:45,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 14:29:45,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:29:45,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:29:45,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:29:45,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:29:45,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2c6859ca90ff0da205f4fa2f88d8f61c0c2d9f9f437471b81ea8abc3f9fd19e [2024-11-20 14:29:45,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:29:45,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:29:45,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:29:45,921 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:29:45,921 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:29:45,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/strspn.i [2024-11-20 14:29:47,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:29:47,556 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:29:47,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/strspn.i [2024-11-20 14:29:47,568 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf8683d5/8ffc68416b6246ea8bd62413dc754cb4/FLAGf78e5ad2e [2024-11-20 14:29:47,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cf8683d5/8ffc68416b6246ea8bd62413dc754cb4 [2024-11-20 14:29:47,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:29:47,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:29:47,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:29:47,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:29:47,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:29:47,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:47,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d2be19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47, skipping insertion in model container [2024-11-20 14:29:47,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:47,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:29:47,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:29:47,919 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 14:29:47,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:29:47,987 INFO L204 MainTranslator]: Completed translation [2024-11-20 14:29:47,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47 WrapperNode [2024-11-20 14:29:47,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:29:47,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 14:29:47,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 14:29:47,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 14:29:47,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,020 INFO L138 Inliner]: procedures = 113, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2024-11-20 14:29:48,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 14:29:48,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 14:29:48,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 14:29:48,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 14:29:48,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,048 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [4, 3]. 57 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2024-11-20 14:29:48,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 14:29:48,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 14:29:48,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 14:29:48,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 14:29:48,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (1/1) ... [2024-11-20 14:29:48,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:29:48,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:29:48,096 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) [2024-11-20 14:29:48,125 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 [2024-11-20 14:29:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 14:29:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 14:29:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 14:29:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 14:29:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 14:29:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 14:29:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 14:29:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 14:29:48,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 14:29:48,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 14:29:48,546 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-11-20 14:29:48,547 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 14:29:48,563 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 14:29:48,564 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 14:29:48,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:29:48 BoogieIcfgContainer [2024-11-20 14:29:48,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 14:29:48,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 14:29:48,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 14:29:48,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 14:29:48,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:29:47" (1/3) ... [2024-11-20 14:29:48,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d52f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:29:48, skipping insertion in model container [2024-11-20 14:29:48,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:29:47" (2/3) ... [2024-11-20 14:29:48,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d52f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:29:48, skipping insertion in model container [2024-11-20 14:29:48,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:29:48" (3/3) ... [2024-11-20 14:29:48,575 INFO L112 eAbstractionObserver]: Analyzing ICFG strspn.i [2024-11-20 14:29:48,592 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 14:29:48,592 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-11-20 14:29:48,643 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 14:29:48,652 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;@2f9dc0ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 14:29:48,652 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-20 14:29:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:48,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 14:29:48,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:48,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 14:29:48,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:48,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash 925677, now seen corresponding path program 1 times [2024-11-20 14:29:48,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:48,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429623533] [2024-11-20 14:29:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:48,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429623533] [2024-11-20 14:29:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429623533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:48,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:29:48,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941350497] [2024-11-20 14:29:48,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:48,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:29:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:48,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:29:48,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:29:48,866 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:48,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:48,920 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-20 14:29:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:29:48,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 14:29:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:48,931 INFO L225 Difference]: With dead ends: 42 [2024-11-20 14:29:48,931 INFO L226 Difference]: Without dead ends: 39 [2024-11-20 14:29:48,933 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 [2024-11-20 14:29:48,937 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:48,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-20 14:29:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-20 14:29:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-20 14:29:48,968 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 4 [2024-11-20 14:29:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:48,969 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-20 14:29:48,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:48,969 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-20 14:29:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 14:29:48,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:48,970 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 14:29:48,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 14:29:48,970 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:48,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2024-11-20 14:29:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:48,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429310699] [2024-11-20 14:29:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:48,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:49,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429310699] [2024-11-20 14:29:49,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429310699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:49,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:49,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:29:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490800007] [2024-11-20 14:29:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:49,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:29:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:29:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:29:49,091 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:49,138 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-20 14:29:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:29:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 14:29:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:49,142 INFO L225 Difference]: With dead ends: 38 [2024-11-20 14:29:49,142 INFO L226 Difference]: Without dead ends: 38 [2024-11-20 14:29:49,143 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 [2024-11-20 14:29:49,144 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:49,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-20 14:29:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-20 14:29:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.75) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-20 14:29:49,152 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 4 [2024-11-20 14:29:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:49,152 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-20 14:29:49,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-20 14:29:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 14:29:49,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:49,157 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 14:29:49,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 14:29:49,158 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:49,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2024-11-20 14:29:49,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:49,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512243177] [2024-11-20 14:29:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:49,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:49,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:49,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512243177] [2024-11-20 14:29:49,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512243177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:49,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:29:49,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187896869] [2024-11-20 14:29:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:49,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:29:49,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:29:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:29:49,374 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:49,425 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-11-20 14:29:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:29:49,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 14:29:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:49,427 INFO L225 Difference]: With dead ends: 37 [2024-11-20 14:29:49,427 INFO L226 Difference]: Without dead ends: 37 [2024-11-20 14:29:49,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:29:49,428 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:49,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-20 14:29:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-20 14:29:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 36 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) [2024-11-20 14:29:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-20 14:29:49,432 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 4 [2024-11-20 14:29:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:49,433 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-20 14:29:49,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-20 14:29:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-20 14:29:49,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:49,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:49,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 14:29:49,434 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:49,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782697, now seen corresponding path program 1 times [2024-11-20 14:29:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:49,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515236959] [2024-11-20 14:29:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515236959] [2024-11-20 14:29:49,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515236959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:49,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:49,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:29:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021245881] [2024-11-20 14:29:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:49,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:29:49,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:29:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:29:49,536 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:49,580 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-20 14:29:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:29:49,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-20 14:29:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:49,581 INFO L225 Difference]: With dead ends: 36 [2024-11-20 14:29:49,581 INFO L226 Difference]: Without dead ends: 36 [2024-11-20 14:29:49,582 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 [2024-11-20 14:29:49,583 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:49,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 56 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-20 14:29:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-20 14:29:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-20 14:29:49,591 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 7 [2024-11-20 14:29:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:49,592 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-20 14:29:49,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-20 14:29:49,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-20 14:29:49,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:49,593 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:49,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 14:29:49,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:49,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782698, now seen corresponding path program 1 times [2024-11-20 14:29:49,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:49,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890896304] [2024-11-20 14:29:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:49,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:49,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890896304] [2024-11-20 14:29:49,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890896304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:49,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:49,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:29:49,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184719479] [2024-11-20 14:29:49,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:49,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:29:49,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:49,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:29:49,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:29:49,781 INFO L87 Difference]: Start difference. First operand 36 states and 40 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) [2024-11-20 14:29:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:49,798 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-20 14:29:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:29:49,799 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 [2024-11-20 14:29:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:49,800 INFO L225 Difference]: With dead ends: 35 [2024-11-20 14:29:49,800 INFO L226 Difference]: Without dead ends: 35 [2024-11-20 14:29:49,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:29:49,801 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:49,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-20 14:29:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-20 14:29:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.625) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-20 14:29:49,810 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 7 [2024-11-20 14:29:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:49,810 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-20 14:29:49,810 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) [2024-11-20 14:29:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-20 14:29:49,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-20 14:29:49,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:49,811 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:49,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 14:29:49,812 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:49,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:49,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782696, now seen corresponding path program 1 times [2024-11-20 14:29:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:49,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597496223] [2024-11-20 14:29:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:49,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:49,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597496223] [2024-11-20 14:29:49,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597496223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:49,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:49,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:29:49,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480634026] [2024-11-20 14:29:49,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:49,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:29:49,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:49,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:29:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:29:49,924 INFO L87 Difference]: Start difference. First operand 35 states and 39 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) [2024-11-20 14:29:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:49,963 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-20 14:29:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:29:49,963 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 [2024-11-20 14:29:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:49,964 INFO L225 Difference]: With dead ends: 36 [2024-11-20 14:29:49,964 INFO L226 Difference]: Without dead ends: 35 [2024-11-20 14:29:49,964 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 [2024-11-20 14:29:49,965 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:49,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-20 14:29:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-20 14:29:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-20 14:29:49,970 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 7 [2024-11-20 14:29:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:49,971 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-20 14:29:49,971 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) [2024-11-20 14:29:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-20 14:29:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 14:29:49,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:49,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:49,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 14:29:49,972 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:49,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1151383917, now seen corresponding path program 1 times [2024-11-20 14:29:49,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:49,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803064134] [2024-11-20 14:29:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:49,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:50,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:50,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803064134] [2024-11-20 14:29:50,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803064134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:50,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:50,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:29:50,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252853400] [2024-11-20 14:29:50,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:50,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:29:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:29:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:29:50,109 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:50,168 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-20 14:29:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:29:50,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-20 14:29:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:50,169 INFO L225 Difference]: With dead ends: 33 [2024-11-20 14:29:50,169 INFO L226 Difference]: Without dead ends: 33 [2024-11-20 14:29:50,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:29:50,170 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:50,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:29:50,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-20 14:29:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-20 14:29:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.5) internal successors, (36), 32 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) [2024-11-20 14:29:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-20 14:29:50,177 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 9 [2024-11-20 14:29:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:50,178 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-20 14:29:50,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-20 14:29:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 14:29:50,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:50,178 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:50,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 14:29:50,179 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:50,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1151383918, now seen corresponding path program 1 times [2024-11-20 14:29:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756489327] [2024-11-20 14:29:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:50,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:50,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:50,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756489327] [2024-11-20 14:29:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756489327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:50,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:50,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:29:50,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467732990] [2024-11-20 14:29:50,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:50,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:29:50,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:50,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:29:50,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:50,407 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:50,488 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-20 14:29:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:29:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-20 14:29:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:50,490 INFO L225 Difference]: With dead ends: 54 [2024-11-20 14:29:50,490 INFO L226 Difference]: Without dead ends: 54 [2024-11-20 14:29:50,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:50,491 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:50,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 93 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:29:50,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-20 14:29:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2024-11-20 14:29:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-20 14:29:50,501 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 9 [2024-11-20 14:29:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:50,501 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-20 14:29:50,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-20 14:29:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-20 14:29:50,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:50,502 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:50,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 14:29:50,502 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:50,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1621618095, now seen corresponding path program 1 times [2024-11-20 14:29:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:50,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226525243] [2024-11-20 14:29:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:50,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226525243] [2024-11-20 14:29:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226525243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:50,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:50,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:29:50,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574786635] [2024-11-20 14:29:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:50,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:29:50,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:29:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:29:50,559 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2024-11-20 14:29:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:50,617 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-11-20 14:29:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:29:50,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 [2024-11-20 14:29:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:50,621 INFO L225 Difference]: With dead ends: 40 [2024-11-20 14:29:50,621 INFO L226 Difference]: Without dead ends: 40 [2024-11-20 14:29:50,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:50,622 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:50,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-20 14:29:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-20 14:29:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.411764705882353) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-11-20 14:29:50,630 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 11 [2024-11-20 14:29:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:50,630 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-11-20 14:29:50,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2024-11-20 14:29:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-11-20 14:29:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-20 14:29:50,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:50,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:50,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 14:29:50,631 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:50,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1621618094, now seen corresponding path program 1 times [2024-11-20 14:29:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:50,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296410811] [2024-11-20 14:29:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:50,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:50,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296410811] [2024-11-20 14:29:50,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296410811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:50,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:29:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578031219] [2024-11-20 14:29:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:50,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:29:50,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:50,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:29:50,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:50,824 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:50,904 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2024-11-20 14:29:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:29:50,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-20 14:29:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:50,905 INFO L225 Difference]: With dead ends: 58 [2024-11-20 14:29:50,905 INFO L226 Difference]: Without dead ends: 58 [2024-11-20 14:29:50,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:29:50,906 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:50,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 69 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:29:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-20 14:29:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2024-11-20 14:29:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 54 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2024-11-20 14:29:50,916 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 11 [2024-11-20 14:29:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:50,916 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2024-11-20 14:29:50,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2024-11-20 14:29:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-20 14:29:50,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:50,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:50,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 14:29:50,917 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:50,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:50,918 INFO L85 PathProgramCache]: Analyzing trace with hash 698119516, now seen corresponding path program 1 times [2024-11-20 14:29:50,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:50,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892166337] [2024-11-20 14:29:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:50,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:51,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:51,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892166337] [2024-11-20 14:29:51,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892166337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:51,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:51,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:29:51,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100506516] [2024-11-20 14:29:51,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:51,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:29:51,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:51,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:29:51,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:51,069 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2024-11-20 14:29:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:51,108 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2024-11-20 14:29:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:29:51,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 [2024-11-20 14:29:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:51,109 INFO L225 Difference]: With dead ends: 54 [2024-11-20 14:29:51,109 INFO L226 Difference]: Without dead ends: 51 [2024-11-20 14:29:51,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:51,110 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:51,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 79 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-20 14:29:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-20 14:29:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2024-11-20 14:29:51,114 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 13 [2024-11-20 14:29:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:51,115 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2024-11-20 14:29:51,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2024-11-20 14:29:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2024-11-20 14:29:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 14:29:51,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:51,115 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:51,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 14:29:51,116 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:51,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:51,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2039869639, now seen corresponding path program 1 times [2024-11-20 14:29:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:51,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313453862] [2024-11-20 14:29:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:51,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:51,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:51,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313453862] [2024-11-20 14:29:51,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313453862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:51,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:51,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:29:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434181873] [2024-11-20 14:29:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:51,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:29:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:29:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:29:51,144 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:51,156 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-11-20 14:29:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:29:51,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-20 14:29:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:51,158 INFO L225 Difference]: With dead ends: 55 [2024-11-20 14:29:51,158 INFO L226 Difference]: Without dead ends: 55 [2024-11-20 14:29:51,158 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 [2024-11-20 14:29:51,158 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:51,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-20 14:29:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-20 14:29:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-20 14:29:51,169 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 16 [2024-11-20 14:29:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:51,169 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-20 14:29:51,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-20 14:29:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-20 14:29:51,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:51,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:51,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 14:29:51,170 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:51,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1807941204, now seen corresponding path program 1 times [2024-11-20 14:29:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:51,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759705247] [2024-11-20 14:29:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:51,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:51,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759705247] [2024-11-20 14:29:51,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759705247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:29:51,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:29:51,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:29:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394982535] [2024-11-20 14:29:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:29:51,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:29:51,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:29:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:51,258 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:51,295 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-11-20 14:29:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:29:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-20 14:29:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:51,296 INFO L225 Difference]: With dead ends: 56 [2024-11-20 14:29:51,296 INFO L226 Difference]: Without dead ends: 53 [2024-11-20 14:29:51,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:29:51,297 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:51,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:29:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-20 14:29:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-20 14:29:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-11-20 14:29:51,304 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 18 [2024-11-20 14:29:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:51,305 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-11-20 14:29:51,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-11-20 14:29:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 14:29:51,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:51,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:51,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 14:29:51,305 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:51,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 454115273, now seen corresponding path program 1 times [2024-11-20 14:29:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489543308] [2024-11-20 14:29:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:51,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:51,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489543308] [2024-11-20 14:29:51,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489543308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:29:51,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510996066] [2024-11-20 14:29:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:51,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:29:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:29:51,768 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) [2024-11-20 14:29:51,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 14:29:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:51,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 14:29:51,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:29:51,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-20 14:29:52,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:29:52,120 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 18 treesize of output 19 [2024-11-20 14:29:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:52,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:29:52,686 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 13 treesize of output 11 [2024-11-20 14:29:52,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-20 14:29:52,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-20 14:29:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510996066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:29:52,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:29:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-20 14:29:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638571818] [2024-11-20 14:29:52,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:29:52,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 14:29:52,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 14:29:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-20 14:29:52,721 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:53,393 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2024-11-20 14:29:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:29:53,394 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-20 14:29:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:53,394 INFO L225 Difference]: With dead ends: 74 [2024-11-20 14:29:53,395 INFO L226 Difference]: Without dead ends: 70 [2024-11-20 14:29:53,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 14:29:53,396 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 119 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:53,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 135 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:29:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-20 14:29:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2024-11-20 14:29:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 1.183673469387755) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-11-20 14:29:53,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 19 [2024-11-20 14:29:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:53,399 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-11-20 14:29:53,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-11-20 14:29:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-20 14:29:53,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:53,400 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:53,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 14:29:53,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 14:29:53,601 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:53,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1683581738, now seen corresponding path program 1 times [2024-11-20 14:29:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148502588] [2024-11-20 14:29:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:54,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148502588] [2024-11-20 14:29:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148502588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:29:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256563076] [2024-11-20 14:29:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:54,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:29:54,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:29:54,158 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) [2024-11-20 14:29:54,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 14:29:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:54,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-20 14:29:54,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:29:54,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-20 14:29:54,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:29:54,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-20 14:29:54,335 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:29:54,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 14:29:54,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:29:54,733 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 18 treesize of output 19 [2024-11-20 14:29:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:55,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:29:55,395 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 20 treesize of output 12 [2024-11-20 14:29:55,719 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:29:55,721 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 15 treesize of output 11 [2024-11-20 14:29:55,728 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 14:29:55,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-20 14:29:55,736 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 13 treesize of output 11 [2024-11-20 14:29:55,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-20 14:29:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:55,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256563076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:29:55,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:29:55,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 38 [2024-11-20 14:29:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718610058] [2024-11-20 14:29:55,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:29:55,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-20 14:29:55,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-20 14:29:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2024-11-20 14:29:55,765 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 39 states, 38 states have (on average 1.5) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:29:56,621 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2024-11-20 14:29:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 14:29:56,625 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.5) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-20 14:29:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:29:56,625 INFO L225 Difference]: With dead ends: 78 [2024-11-20 14:29:56,625 INFO L226 Difference]: Without dead ends: 78 [2024-11-20 14:29:56,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=356, Invalid=1996, Unknown=0, NotChecked=0, Total=2352 [2024-11-20 14:29:56,626 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:29:56,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 177 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:29:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-20 14:29:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 55. [2024-11-20 14:29:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-20 14:29:56,630 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 21 [2024-11-20 14:29:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:29:56,630 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-20 14:29:56,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.5) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:29:56,630 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-20 14:29:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 14:29:56,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:29:56,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:29:56,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 14:29:56,831 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,SelfDestructingSolverStorable14 [2024-11-20 14:29:56,832 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:29:56,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:29:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1055062464, now seen corresponding path program 2 times [2024-11-20 14:29:56,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:29:56,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582250234] [2024-11-20 14:29:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:29:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:29:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:29:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:57,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:29:57,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582250234] [2024-11-20 14:29:57,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582250234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:29:57,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639950626] [2024-11-20 14:29:57,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:29:57,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:29:57,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:29:57,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:29:57,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 14:29:57,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:29:57,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:29:57,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 14:29:57,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:29:57,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-20 14:29:58,091 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-20 14:29:58,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2024-11-20 14:29:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:58,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:29:58,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-20 14:29:58,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-20 14:29:58,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2024-11-20 14:29:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:29:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639950626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:29:58,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:29:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 32 [2024-11-20 14:29:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911470505] [2024-11-20 14:29:58,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:29:58,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-20 14:29:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:29:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-20 14:29:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=938, Unknown=1, NotChecked=0, Total=1056 [2024-11-20 14:29:58,786 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:30:04,033 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2024-11-20 14:30:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 14:30:04,034 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-20 14:30:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:30:04,035 INFO L225 Difference]: With dead ends: 127 [2024-11-20 14:30:04,035 INFO L226 Difference]: Without dead ends: 127 [2024-11-20 14:30:04,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=470, Invalid=2493, Unknown=7, NotChecked=0, Total=2970 [2024-11-20 14:30:04,037 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 211 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:30:04,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 192 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 518 Invalid, 5 Unknown, 0 Unchecked, 2.4s Time] [2024-11-20 14:30:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-20 14:30:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103. [2024-11-20 14:30:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 102 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2024-11-20 14:30:04,045 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 27 [2024-11-20 14:30:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:30:04,045 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2024-11-20 14:30:04,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2024-11-20 14:30:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-20 14:30:04,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:30:04,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:30:04,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 14:30:04,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:30:04,249 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:30:04,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:30:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1896442818, now seen corresponding path program 2 times [2024-11-20 14:30:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:30:04,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473918127] [2024-11-20 14:30:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:30:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:30:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:30:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:30:04,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:30:04,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473918127] [2024-11-20 14:30:04,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473918127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:30:04,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829273068] [2024-11-20 14:30:04,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:30:04,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:30:04,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:30:04,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:30:04,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 14:30:04,957 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:30:04,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:30:04,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-20 14:30:04,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:30:04,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-20 14:30:05,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:30:05,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-20 14:30:05,056 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:30:05,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 14:30:06,100 INFO L349 Elim1Store]: treesize reduction 4, result has 82.6 percent of original size [2024-11-20 14:30:06,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 36 [2024-11-20 14:30:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:30:06,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:30:07,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:30:07,007 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 30 treesize of output 29 [2024-11-20 14:30:07,408 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 29 treesize of output 25 [2024-11-20 14:30:07,412 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:30:07,415 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 15 treesize of output 11 [2024-11-20 14:30:07,421 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 14:30:07,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-20 14:30:07,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2024-11-20 14:30:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:30:07,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829273068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:30:07,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:30:07,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 19] total 50 [2024-11-20 14:30:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335759065] [2024-11-20 14:30:07,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:30:07,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-20 14:30:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:30:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-20 14:30:07,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2249, Unknown=0, NotChecked=0, Total=2550 [2024-11-20 14:30:07,470 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand has 51 states, 50 states have (on average 1.84) internal successors, (92), 51 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:30:09,845 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2024-11-20 14:30:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-20 14:30:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.84) internal successors, (92), 51 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-20 14:30:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:30:09,846 INFO L225 Difference]: With dead ends: 149 [2024-11-20 14:30:09,846 INFO L226 Difference]: Without dead ends: 149 [2024-11-20 14:30:09,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1161, Invalid=5645, Unknown=0, NotChecked=0, Total=6806 [2024-11-20 14:30:09,849 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 103 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 14:30:09,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 178 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 14:30:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-20 14:30:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 55. [2024-11-20 14:30:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-20 14:30:09,852 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 33 [2024-11-20 14:30:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:30:09,852 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-20 14:30:09,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.84) internal successors, (92), 51 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-20 14:30:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 14:30:09,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:30:09,854 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:30:09,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 14:30:10,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 14:30:10,058 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-20 14:30:10,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:30:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash -644485211, now seen corresponding path program 3 times [2024-11-20 14:30:10,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:30:10,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375322571] [2024-11-20 14:30:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:30:10,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:30:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:30:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:30:10,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:30:10,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375322571] [2024-11-20 14:30:10,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375322571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:30:10,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034591531] [2024-11-20 14:30:10,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 14:30:10,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:30:10,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:30:10,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:30:10,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 14:30:10,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-20 14:30:10,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:30:10,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-20 14:30:10,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:30:10,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-20 14:30:12,014 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-20 14:30:12,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2024-11-20 14:30:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-20 14:30:12,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:30:25,490 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 66 treesize of output 56 [2024-11-20 14:30:25,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:30:25,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 176 [2024-11-20 14:30:25,662 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 15 treesize of output 11 [2024-11-20 14:30:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:30:25,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034591531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:30:25,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:30:25,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 26] total 52 [2024-11-20 14:30:25,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62356333] [2024-11-20 14:30:25,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:30:25,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-20 14:30:25,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:30:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-20 14:30:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2453, Unknown=2, NotChecked=0, Total=2756 [2024-11-20 14:30:25,784 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 53 states, 52 states have (on average 2.326923076923077) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:30:28,685 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2024-11-20 14:30:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-20 14:30:28,686 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.326923076923077) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 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 51 [2024-11-20 14:30:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:30:28,686 INFO L225 Difference]: With dead ends: 66 [2024-11-20 14:30:28,686 INFO L226 Difference]: Without dead ends: 0 [2024-11-20 14:30:28,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=951, Invalid=5367, Unknown=2, NotChecked=0, Total=6320 [2024-11-20 14:30:28,688 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 267 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 14:30:28,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 323 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 14:30:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-20 14:30:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-20 14:30:28,689 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) [2024-11-20 14:30:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-20 14:30:28,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2024-11-20 14:30:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:30:28,689 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 14:30:28,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.326923076923077) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:30:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-20 14:30:28,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-20 14:30:28,692 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2024-11-20 14:30:28,692 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2024-11-20 14:30:28,692 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-11-20 14:30:28,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-20 14:30:28,694 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-20 14:30:28,694 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 15 remaining) [2024-11-20 14:30:28,694 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-20 14:30:28,694 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-20 14:30:28,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 14:30:28,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 14:30:28,898 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:30:28,900 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 14:30:28,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:30:28 BoogieIcfgContainer [2024-11-20 14:30:28,902 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 14:30:28,903 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 14:30:28,903 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 14:30:28,903 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 14:30:28,903 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:29:48" (3/4) ... [2024-11-20 14:30:28,905 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 14:30:28,911 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-20 14:30:28,912 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-20 14:30:28,912 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-20 14:30:28,912 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 14:30:29,008 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 14:30:29,009 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 14:30:29,009 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 14:30:29,009 INFO L158 Benchmark]: Toolchain (without parser) took 41425.21ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 105.1MB in the beginning and 157.0MB in the end (delta: -52.0MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2024-11-20 14:30:29,010 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 117.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 14:30:29,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.39ms. Allocated memory is still 174.1MB. Free memory was 104.8MB in the beginning and 86.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-20 14:30:29,010 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.84ms. Allocated memory is still 174.1MB. Free memory was 86.1MB in the beginning and 84.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 14:30:29,010 INFO L158 Benchmark]: Boogie Preprocessor took 35.12ms. Allocated memory is still 174.1MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 14:30:29,011 INFO L158 Benchmark]: RCFGBuilder took 503.16ms. Allocated memory is still 174.1MB. Free memory was 82.0MB in the beginning and 132.0MB in the end (delta: -50.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-11-20 14:30:29,011 INFO L158 Benchmark]: TraceAbstraction took 40334.54ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 132.0MB in the beginning and 162.7MB in the end (delta: -30.7MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2024-11-20 14:30:29,012 INFO L158 Benchmark]: Witness Printer took 106.21ms. Allocated memory is still 260.0MB. Free memory was 162.3MB in the beginning and 157.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-20 14:30:29,014 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 117.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.39ms. Allocated memory is still 174.1MB. Free memory was 104.8MB in the beginning and 86.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.84ms. Allocated memory is still 174.1MB. Free memory was 86.1MB in the beginning and 84.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.12ms. Allocated memory is still 174.1MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.16ms. Allocated memory is still 174.1MB. Free memory was 82.0MB in the beginning and 132.0MB in the end (delta: -50.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * TraceAbstraction took 40334.54ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 132.0MB in the beginning and 162.7MB in the end (delta: -30.7MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. * Witness Printer took 106.21ms. Allocated memory is still 260.0MB. Free memory was 162.3MB in the beginning and 157.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: -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: 519]: 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, 41 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 40.3s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 916 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 916 mSDsluCounter, 1877 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1413 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3644 IncrementalHoareTripleChecker+Invalid, 3719 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 464 mSDtfsCounter, 3644 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 504 GetRequests, 168 SyntacticMatches, 11 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 25.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=16, InterpolantAutomatonStates: 170, 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, 18 MinimizatonAttempts, 175 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 545 ConstructedInterpolants, 142 QuantifiedInterpolants, 10125 SizeOfPredicates, 51 NumberOfNonLiveVariables, 780 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 28 InterpolantComputations, 13 PerfectInterpolantSequences, 55/335 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 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 14:30:29,069 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