./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-recursive-malloc/selectionSort_recursive.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-recursive-malloc/selectionSort_recursive.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 ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 14:33:21,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:33:21,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-20 14:33:21,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:33:21,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:33:21,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:33:21,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:33:21,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:33:21,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:33:21,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:33:21,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:33:21,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:33:21,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:33:21,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:33:21,898 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:33:21,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:33:21,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:33:21,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:33:21,898 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:33:21,898 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:33:21,898 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:33:21,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:33:21,900 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:33:21,900 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:33:21,900 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:33:21,900 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:33:21,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:33:21,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:33:21,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:33:21,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:33:21,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:33:21,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:33:21,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:33:21,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 14:33:21,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 14:33:21,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:33:21,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:33:21,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:33:21,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:33:21,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 [2024-11-20 14:33:22,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:33:22,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:33:22,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:33:22,142 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:33:22,142 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:33:22,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2024-11-20 14:33:23,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:33:23,620 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:33:23,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2024-11-20 14:33:23,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ec0b6308/56e01d2b44ac44eeae8599094103d69c/FLAG1f047070b [2024-11-20 14:33:23,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ec0b6308/56e01d2b44ac44eeae8599094103d69c [2024-11-20 14:33:23,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:33:23,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:33:23,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:33:23,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:33:23,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:33:23,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cadcbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23, skipping insertion in model container [2024-11-20 14:33:23,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,673 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:33:23,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:33:23,843 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 14:33:23,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:33:23,869 INFO L204 MainTranslator]: Completed translation [2024-11-20 14:33:23,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23 WrapperNode [2024-11-20 14:33:23,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:33:23,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 14:33:23,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 14:33:23,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 14:33:23,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,895 INFO L138 Inliner]: procedures = 11, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2024-11-20 14:33:23,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 14:33:23,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 14:33:23,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 14:33:23,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 14:33:23,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,916 INFO L175 MemorySlicer]: Split 7 memory accesses to 1 slices as follows [7]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-11-20 14:33:23,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 14:33:23,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 14:33:23,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 14:33:23,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 14:33:23,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (1/1) ... [2024-11-20 14:33:23,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:33:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:23,959 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 14:33:23,962 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 14:33:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 14:33:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 14:33:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 14:33:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 14:33:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 14:33:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure selectionSort [2024-11-20 14:33:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure selectionSort [2024-11-20 14:33:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 14:33:24,053 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 14:33:24,055 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 14:33:24,254 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-11-20 14:33:24,254 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 14:33:24,268 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 14:33:24,269 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 14:33:24,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:33:24 BoogieIcfgContainer [2024-11-20 14:33:24,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 14:33:24,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 14:33:24,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 14:33:24,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 14:33:24,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:33:23" (1/3) ... [2024-11-20 14:33:24,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b8e199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:33:24, skipping insertion in model container [2024-11-20 14:33:24,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:23" (2/3) ... [2024-11-20 14:33:24,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b8e199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:33:24, skipping insertion in model container [2024-11-20 14:33:24,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:33:24" (3/3) ... [2024-11-20 14:33:24,276 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionSort_recursive.i [2024-11-20 14:33:24,293 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 14:33:24,293 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-20 14:33:24,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 14:33:24,336 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;@3625b1d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 14:33:24,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-20 14:33:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:33:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 14:33:24,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:24,347 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 14:33:24,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash 925632, now seen corresponding path program 1 times [2024-11-20 14:33:24,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:24,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372002806] [2024-11-20 14:33:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:24,486 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 14:33:24,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372002806] [2024-11-20 14:33:24,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372002806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:24,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:24,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:33:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660837857] [2024-11-20 14:33:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:24,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:33:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:33:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:24,516 INFO L87 Difference]: Start difference. First operand has 50 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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 14:33:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:24,567 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-11-20 14:33:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:33:24,569 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 14:33:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:24,575 INFO L225 Difference]: With dead ends: 51 [2024-11-20 14:33:24,575 INFO L226 Difference]: Without dead ends: 48 [2024-11-20 14:33:24,577 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 14:33:24,580 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 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 14:33:24,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:24,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-20 14:33:24,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-20 14:33:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 45 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:33:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-20 14:33:24,613 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 4 [2024-11-20 14:33:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:24,614 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-20 14:33:24,614 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 14:33:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-20 14:33:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-20 14:33:24,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:24,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 14:33:24,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 14:33:24,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:24,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:24,617 INFO L85 PathProgramCache]: Analyzing trace with hash 28695942, now seen corresponding path program 1 times [2024-11-20 14:33:24,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:24,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161535666] [2024-11-20 14:33:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:24,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:24,694 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 14:33:24,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:24,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161535666] [2024-11-20 14:33:24,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161535666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:24,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:24,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:33:24,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106652229] [2024-11-20 14:33:24,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:24,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:33:24,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:24,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:33:24,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:24,701 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:24,751 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-11-20 14:33:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:33:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-20 14:33:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:24,765 INFO L225 Difference]: With dead ends: 46 [2024-11-20 14:33:24,765 INFO L226 Difference]: Without dead ends: 46 [2024-11-20 14:33:24,766 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 14:33:24,767 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 65 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 14:33:24,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 65 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-20 14:33:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-20 14:33:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 43 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:33:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-20 14:33:24,777 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 5 [2024-11-20 14:33:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:24,778 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-20 14:33:24,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-20 14:33:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-20 14:33:24,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:24,783 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 14:33:24,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 14:33:24,783 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:24,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash 28695943, now seen corresponding path program 1 times [2024-11-20 14:33:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:24,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989282088] [2024-11-20 14:33:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:24,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:25,041 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 14:33:25,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989282088] [2024-11-20 14:33:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989282088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:25,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:25,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:33:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145145570] [2024-11-20 14:33:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:25,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:33:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:33:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:25,044 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:25,116 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-11-20 14:33:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:33:25,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-20 14:33:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:25,117 INFO L225 Difference]: With dead ends: 50 [2024-11-20 14:33:25,117 INFO L226 Difference]: Without dead ends: 50 [2024-11-20 14:33:25,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:25,119 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:25,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-20 14:33:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-20 14:33:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 45 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:33:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-20 14:33:25,128 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 5 [2024-11-20 14:33:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:25,128 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-20 14:33:25,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-20 14:33:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 14:33:25,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:25,129 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:25,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 14:33:25,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:25,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1356498634, now seen corresponding path program 1 times [2024-11-20 14:33:25,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043149265] [2024-11-20 14:33:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:25,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:25,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043149265] [2024-11-20 14:33:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043149265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:25,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437011829] [2024-11-20 14:33:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:25,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:25,366 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 14:33:25,367 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 14:33:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:25,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 14:33:25,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:25,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-20 14:33:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:25,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437011829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:25,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-20 14:33:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081541682] [2024-11-20 14:33:25,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:25,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 14:33:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 14:33:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-20 14:33:25,929 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:26,098 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-11-20 14:33:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:33:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-20 14:33:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:26,099 INFO L225 Difference]: With dead ends: 49 [2024-11-20 14:33:26,099 INFO L226 Difference]: Without dead ends: 49 [2024-11-20 14:33:26,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-20 14:33:26,101 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:26,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 187 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-20 14:33:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2024-11-20 14:33:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 43 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:33:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-20 14:33:26,104 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2024-11-20 14:33:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:26,105 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-20 14:33:26,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-20 14:33:26,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 14:33:26,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:26,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:26,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 14:33:26,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:26,311 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting selectionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:26,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash -800805402, now seen corresponding path program 1 times [2024-11-20 14:33:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:26,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132783237] [2024-11-20 14:33:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:26,400 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 14:33:26,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132783237] [2024-11-20 14:33:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132783237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:26,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:26,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:33:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766999579] [2024-11-20 14:33:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:26,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:33:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:26,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:33:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:26,402 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:26,474 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-11-20 14:33:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:33:26,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 14:33:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:26,475 INFO L225 Difference]: With dead ends: 40 [2024-11-20 14:33:26,475 INFO L226 Difference]: Without dead ends: 40 [2024-11-20 14:33:26,476 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 14:33:26,476 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:26,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 49 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-20 14:33:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-20 14:33:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 37 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:33:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-20 14:33:26,481 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 14 [2024-11-20 14:33:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:26,481 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-20 14:33:26,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-20 14:33:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 14:33:26,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:26,481 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:26,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 14:33:26,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:26,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:26,483 INFO L85 PathProgramCache]: Analyzing trace with hash -800805401, now seen corresponding path program 1 times [2024-11-20 14:33:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:26,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028744051] [2024-11-20 14:33:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:26,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:26,594 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 14:33:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028744051] [2024-11-20 14:33:26,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028744051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423152103] [2024-11-20 14:33:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:26,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:26,600 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 14:33:26,601 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 14:33:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:26,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 14:33:26,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:26,689 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 14:33:26,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:26,736 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 14:33:26,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423152103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:26,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:26,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 14:33:26,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933522982] [2024-11-20 14:33:26,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:26,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 14:33:26,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:26,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 14:33:26,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:33:26,738 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:26,819 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2024-11-20 14:33:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:33:26,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 14:33:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:26,820 INFO L225 Difference]: With dead ends: 60 [2024-11-20 14:33:26,820 INFO L226 Difference]: Without dead ends: 60 [2024-11-20 14:33:26,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:33:26,821 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:26,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 297 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-20 14:33:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-11-20 14:33:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:33:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-11-20 14:33:26,825 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 14 [2024-11-20 14:33:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:26,826 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-11-20 14:33:26,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-11-20 14:33:26,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-20 14:33:26,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:26,826 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:26,833 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 14:33:27,027 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,SelfDestructingSolverStorable5 [2024-11-20 14:33:27,027 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:27,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:27,028 INFO L85 PathProgramCache]: Analyzing trace with hash 944839286, now seen corresponding path program 1 times [2024-11-20 14:33:27,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:27,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304129185] [2024-11-20 14:33:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:27,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:33:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:27,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304129185] [2024-11-20 14:33:27,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304129185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:27,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:27,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:33:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677322810] [2024-11-20 14:33:27,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:27,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:33:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:33:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:33:27,054 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:33:27,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:27,073 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-20 14:33:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:33:27,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-20 14:33:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:27,075 INFO L225 Difference]: With dead ends: 51 [2024-11-20 14:33:27,075 INFO L226 Difference]: Without dead ends: 51 [2024-11-20 14:33:27,076 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 14:33:27,076 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:27,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 77 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:27,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-20 14:33:27,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-20 14:33:27,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:33:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-11-20 14:33:27,080 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 15 [2024-11-20 14:33:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:27,080 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-11-20 14:33:27,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:33:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-11-20 14:33:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 14:33:27,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:27,081 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:27,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 14:33:27,081 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:27,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash -774753146, now seen corresponding path program 1 times [2024-11-20 14:33:27,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230250685] [2024-11-20 14:33:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:27,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:33:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230250685] [2024-11-20 14:33:27,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230250685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:27,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:27,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:33:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997220971] [2024-11-20 14:33:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:27,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:33:27,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:33:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:33:27,120 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:33:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:27,147 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-20 14:33:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:33:27,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-20 14:33:27,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:27,149 INFO L225 Difference]: With dead ends: 50 [2024-11-20 14:33:27,149 INFO L226 Difference]: Without dead ends: 50 [2024-11-20 14:33:27,149 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 14:33:27,149 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 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 14:33:27,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-20 14:33:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-20 14:33:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:33:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2024-11-20 14:33:27,155 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 16 [2024-11-20 14:33:27,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:27,155 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2024-11-20 14:33:27,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:33:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2024-11-20 14:33:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-20 14:33:27,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:27,156 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 14:33:27,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 14:33:27,156 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:27,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1508429111, now seen corresponding path program 1 times [2024-11-20 14:33:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:27,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313076296] [2024-11-20 14:33:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:27,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:33:27,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:27,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313076296] [2024-11-20 14:33:27,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313076296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:27,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:27,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:33:27,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128047358] [2024-11-20 14:33:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:27,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:33:27,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:33:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:27,234 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:33:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:27,264 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2024-11-20 14:33:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:33:27,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-20 14:33:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:27,266 INFO L225 Difference]: With dead ends: 49 [2024-11-20 14:33:27,266 INFO L226 Difference]: Without dead ends: 35 [2024-11-20 14:33:27,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:27,267 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:27,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 88 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-20 14:33:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-20 14:33:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 33 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-20 14:33:27,273 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 18 [2024-11-20 14:33:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:27,273 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-20 14:33:27,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:33:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-20 14:33:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-20 14:33:27,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:27,273 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:27,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 14:33:27,274 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:27,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1266237436, now seen corresponding path program 2 times [2024-11-20 14:33:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:27,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922998671] [2024-11-20 14:33:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:33:27,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:27,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922998671] [2024-11-20 14:33:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922998671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:27,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:27,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 14:33:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469164839] [2024-11-20 14:33:27,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:27,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 14:33:27,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 14:33:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:33:27,495 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:27,635 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-11-20 14:33:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:33:27,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 14:33:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:27,637 INFO L225 Difference]: With dead ends: 56 [2024-11-20 14:33:27,637 INFO L226 Difference]: Without dead ends: 56 [2024-11-20 14:33:27,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:33:27,637 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:27,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 57 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-20 14:33:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2024-11-20 14:33:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 39 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-20 14:33:27,641 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 18 [2024-11-20 14:33:27,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:27,641 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-20 14:33:27,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-20 14:33:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 14:33:27,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:27,642 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:27,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 14:33:27,645 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:27,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -598654859, now seen corresponding path program 1 times [2024-11-20 14:33:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:27,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652783357] [2024-11-20 14:33:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:27,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 14:33:27,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:27,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652783357] [2024-11-20 14:33:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652783357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:33:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826067346] [2024-11-20 14:33:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:27,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:33:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:33:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:33:27,740 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:27,846 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2024-11-20 14:33:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:33:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 14:33:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:27,847 INFO L225 Difference]: With dead ends: 71 [2024-11-20 14:33:27,847 INFO L226 Difference]: Without dead ends: 71 [2024-11-20 14:33:27,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:33:27,848 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 75 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:27,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 115 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-20 14:33:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2024-11-20 14:33:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 54 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-20 14:33:27,851 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 19 [2024-11-20 14:33:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:27,851 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-20 14:33:27,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-20 14:33:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 14:33:27,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:27,852 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:27,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 14:33:27,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:27,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash -598656271, now seen corresponding path program 1 times [2024-11-20 14:33:27,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:27,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171558950] [2024-11-20 14:33:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:27,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:27,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171558950] [2024-11-20 14:33:27,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171558950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825211549] [2024-11-20 14:33:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:27,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:27,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:27,956 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 14:33:27,958 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 14:33:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:27,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 14:33:27,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:28,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:28,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825211549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:28,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:28,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-20 14:33:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348658669] [2024-11-20 14:33:28,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:28,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 14:33:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 14:33:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-20 14:33:28,126 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:28,274 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2024-11-20 14:33:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 14:33:28,274 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 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 14:33:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:28,275 INFO L225 Difference]: With dead ends: 74 [2024-11-20 14:33:28,275 INFO L226 Difference]: Without dead ends: 74 [2024-11-20 14:33:28,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-20 14:33:28,275 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 104 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:28,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 156 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-20 14:33:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-11-20 14:33:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 53 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-20 14:33:28,278 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 19 [2024-11-20 14:33:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:28,279 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-20 14:33:28,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-20 14:33:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 14:33:28,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:28,280 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:28,290 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 14:33:28,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:28,481 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:28,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash 738349023, now seen corresponding path program 1 times [2024-11-20 14:33:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:28,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363744196] [2024-11-20 14:33:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363744196] [2024-11-20 14:33:28,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363744196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250770388] [2024-11-20 14:33:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:28,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:28,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:28,601 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 14:33:28,602 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 14:33:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:28,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 14:33:28,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:28,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:28,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250770388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:28,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:28,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2024-11-20 14:33:28,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971349677] [2024-11-20 14:33:28,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:28,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 14:33:28,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 14:33:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:33:28,781 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:28,946 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2024-11-20 14:33:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 14:33:28,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-20 14:33:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:28,947 INFO L225 Difference]: With dead ends: 116 [2024-11-20 14:33:28,947 INFO L226 Difference]: Without dead ends: 116 [2024-11-20 14:33:28,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2024-11-20 14:33:28,948 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 178 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:28,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 202 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-20 14:33:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2024-11-20 14:33:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 83 states have (on average 1.2771084337349397) internal successors, (106), 88 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2024-11-20 14:33:28,952 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 24 [2024-11-20 14:33:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:28,952 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2024-11-20 14:33:28,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2024-11-20 14:33:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 14:33:28,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:28,953 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:28,959 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 14:33:29,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:29,153 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:29,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:29,154 INFO L85 PathProgramCache]: Analyzing trace with hash 738347611, now seen corresponding path program 1 times [2024-11-20 14:33:29,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:29,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067789523] [2024-11-20 14:33:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 14:33:29,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:29,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067789523] [2024-11-20 14:33:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067789523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:29,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:29,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:33:29,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127597223] [2024-11-20 14:33:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:29,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:33:29,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:33:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:33:29,238 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:29,287 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2024-11-20 14:33:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:33:29,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-20 14:33:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:29,288 INFO L225 Difference]: With dead ends: 115 [2024-11-20 14:33:29,288 INFO L226 Difference]: Without dead ends: 115 [2024-11-20 14:33:29,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:33:29,289 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:29,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 83 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-20 14:33:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2024-11-20 14:33:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 95 states have (on average 1.263157894736842) internal successors, (120), 100 states have internal predecessors, (120), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2024-11-20 14:33:29,296 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 24 [2024-11-20 14:33:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:29,297 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2024-11-20 14:33:29,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2024-11-20 14:33:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 14:33:29,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:29,298 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:29,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 14:33:29,298 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:29,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash 882450652, now seen corresponding path program 1 times [2024-11-20 14:33:29,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:29,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322099647] [2024-11-20 14:33:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:29,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 14:33:29,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322099647] [2024-11-20 14:33:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322099647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251797773] [2024-11-20 14:33:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:29,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:29,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:29,429 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 14:33:29,430 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 14:33:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 14:33:29,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 14:33:29,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:29,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-20 14:33:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 14:33:29,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251797773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:29,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:29,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-20 14:33:29,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453161409] [2024-11-20 14:33:29,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:29,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 14:33:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:29,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 14:33:29,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-20 14:33:29,705 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 21 states, 20 states have (on average 2.95) internal successors, (59), 18 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:30,140 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2024-11-20 14:33:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 14:33:30,141 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 18 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-20 14:33:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:30,142 INFO L225 Difference]: With dead ends: 134 [2024-11-20 14:33:30,142 INFO L226 Difference]: Without dead ends: 134 [2024-11-20 14:33:30,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2024-11-20 14:33:30,143 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 194 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:30,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 116 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-20 14:33:30,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 84. [2024-11-20 14:33:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 79 states have internal predecessors, (93), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2024-11-20 14:33:30,148 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 26 [2024-11-20 14:33:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:30,148 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2024-11-20 14:33:30,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 18 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2024-11-20 14:33:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 14:33:30,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:30,149 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:30,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 14:33:30,353 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,SelfDestructingSolverStorable14 [2024-11-20 14:33:30,353 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:30,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:30,354 INFO L85 PathProgramCache]: Analyzing trace with hash -705711637, now seen corresponding path program 1 times [2024-11-20 14:33:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:30,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536147504] [2024-11-20 14:33:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:33:30,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536147504] [2024-11-20 14:33:30,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536147504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833735853] [2024-11-20 14:33:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:30,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:30,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:30,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:30,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 14:33:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 14:33:30,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:33:30,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:33:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833735853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:30,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:30,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2024-11-20 14:33:30,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266018900] [2024-11-20 14:33:30,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:30,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 14:33:30,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:30,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 14:33:30,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:33:30,709 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:30,788 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-11-20 14:33:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:33:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-20 14:33:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:30,789 INFO L225 Difference]: With dead ends: 76 [2024-11-20 14:33:30,789 INFO L226 Difference]: Without dead ends: 56 [2024-11-20 14:33:30,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-20 14:33:30,790 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:30,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 157 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-20 14:33:30,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2024-11-20 14:33:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 50 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2024-11-20 14:33:30,792 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 34 [2024-11-20 14:33:30,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:30,792 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2024-11-20 14:33:30,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2024-11-20 14:33:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 14:33:30,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:30,793 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:30,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 14:33:30,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 14:33:30,994 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:30,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:30,994 INFO L85 PathProgramCache]: Analyzing trace with hash 868782984, now seen corresponding path program 2 times [2024-11-20 14:33:30,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:30,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34503259] [2024-11-20 14:33:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:30,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:31,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34503259] [2024-11-20 14:33:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34503259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156803584] [2024-11-20 14:33:31,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:33:31,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:31,130 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:31,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 14:33:31,176 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:33:31,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:31,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 14:33:31,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:31,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:33:31,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156803584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:31,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:31,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-20 14:33:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072492600] [2024-11-20 14:33:31,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:31,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 14:33:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:31,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 14:33:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-20 14:33:31,347 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:31,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:31,535 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2024-11-20 14:33:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:33:31,535 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-20 14:33:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:31,536 INFO L225 Difference]: With dead ends: 65 [2024-11-20 14:33:31,536 INFO L226 Difference]: Without dead ends: 65 [2024-11-20 14:33:31,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-20 14:33:31,536 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 137 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:31,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 180 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-20 14:33:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2024-11-20 14:33:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 55 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2024-11-20 14:33:31,538 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 38 [2024-11-20 14:33:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:31,538 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2024-11-20 14:33:31,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:31,538 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2024-11-20 14:33:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 14:33:31,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:31,539 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:31,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 14:33:31,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:31,741 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:31,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2013709884, now seen corresponding path program 3 times [2024-11-20 14:33:31,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:31,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874282045] [2024-11-20 14:33:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:31,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 14:33:32,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:32,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874282045] [2024-11-20 14:33:32,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874282045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:32,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885886445] [2024-11-20 14:33:32,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 14:33:32,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:32,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:32,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:32,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 14:33:32,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 14:33:32,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:32,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 14:33:32,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:32,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:32,913 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 7 treesize of output 5 [2024-11-20 14:33:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885886445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:32,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:32,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-20 14:33:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211797087] [2024-11-20 14:33:32,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:32,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-20 14:33:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-20 14:33:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2024-11-20 14:33:32,944 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 23 states have internal predecessors, (94), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:33,639 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2024-11-20 14:33:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 14:33:33,639 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 23 states have internal predecessors, (94), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-20 14:33:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:33,640 INFO L225 Difference]: With dead ends: 86 [2024-11-20 14:33:33,640 INFO L226 Difference]: Without dead ends: 86 [2024-11-20 14:33:33,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=288, Invalid=1782, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 14:33:33,641 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 226 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:33,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 179 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:33:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-20 14:33:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2024-11-20 14:33:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 72 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2024-11-20 14:33:33,644 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 43 [2024-11-20 14:33:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:33,644 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2024-11-20 14:33:33,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 23 states have internal predecessors, (94), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2024-11-20 14:33:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 14:33:33,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:33,645 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:33,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 14:33:33,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 14:33:33,846 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:33,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1999503029, now seen corresponding path program 1 times [2024-11-20 14:33:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623252467] [2024-11-20 14:33:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:33,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 14:33:34,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:34,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623252467] [2024-11-20 14:33:34,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623252467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:34,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140558826] [2024-11-20 14:33:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:34,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:34,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:34,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:34,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 14:33:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:34,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 14:33:34,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 14:33:34,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:34,227 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 29 treesize of output 25 [2024-11-20 14:33:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 14:33:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140558826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:34,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:34,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-20 14:33:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409347421] [2024-11-20 14:33:34,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:34,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 14:33:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 14:33:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-20 14:33:34,324 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:34,601 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2024-11-20 14:33:34,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 14:33:34,601 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-20 14:33:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:34,602 INFO L225 Difference]: With dead ends: 120 [2024-11-20 14:33:34,602 INFO L226 Difference]: Without dead ends: 120 [2024-11-20 14:33:34,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 14:33:34,603 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 199 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:34,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 167 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-20 14:33:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 73. [2024-11-20 14:33:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 69 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2024-11-20 14:33:34,605 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 44 [2024-11-20 14:33:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:34,605 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2024-11-20 14:33:34,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2024-11-20 14:33:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 14:33:34,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:34,605 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:34,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 14:33:34,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:34,806 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:34,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash 502577562, now seen corresponding path program 4 times [2024-11-20 14:33:34,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:34,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123280704] [2024-11-20 14:33:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:34,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 14:33:34,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123280704] [2024-11-20 14:33:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123280704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658757599] [2024-11-20 14:33:34,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 14:33:34,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:34,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:34,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 14:33:35,034 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 14:33:35,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:35,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 14:33:35,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:35,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:35,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658757599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:35,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:35,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 17 [2024-11-20 14:33:35,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574373016] [2024-11-20 14:33:35,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:35,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 14:33:35,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:35,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 14:33:35,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:33:35,190 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:35,387 INFO L93 Difference]: Finished difference Result 203 states and 239 transitions. [2024-11-20 14:33:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 14:33:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-20 14:33:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:35,389 INFO L225 Difference]: With dead ends: 203 [2024-11-20 14:33:35,389 INFO L226 Difference]: Without dead ends: 203 [2024-11-20 14:33:35,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-11-20 14:33:35,389 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 80 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:35,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 243 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-20 14:33:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 152. [2024-11-20 14:33:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 1.2237762237762237) internal successors, (175), 145 states have internal predecessors, (175), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2024-11-20 14:33:35,392 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 48 [2024-11-20 14:33:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:35,392 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2024-11-20 14:33:35,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2024-11-20 14:33:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 14:33:35,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:35,393 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:35,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 14:33:35,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:35,594 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:35,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash -696665063, now seen corresponding path program 5 times [2024-11-20 14:33:35,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:35,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580179557] [2024-11-20 14:33:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:35,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 14:33:35,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580179557] [2024-11-20 14:33:35,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580179557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194629148] [2024-11-20 14:33:35,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 14:33:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:35,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:35,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:35,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 14:33:36,033 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-20 14:33:36,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:36,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 14:33:36,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 14:33:36,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:36,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-20 14:33:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 14:33:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194629148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:36,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:36,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-11-20 14:33:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236530094] [2024-11-20 14:33:36,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:36,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-20 14:33:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-20 14:33:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 14:33:36,711 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand has 35 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 29 states have internal predecessors, (131), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:37,347 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2024-11-20 14:33:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 14:33:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 29 states have internal predecessors, (131), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-20 14:33:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:37,348 INFO L225 Difference]: With dead ends: 181 [2024-11-20 14:33:37,349 INFO L226 Difference]: Without dead ends: 181 [2024-11-20 14:33:37,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=1651, Unknown=0, NotChecked=0, Total=1892 [2024-11-20 14:33:37,350 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 265 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:37,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 414 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:33:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-20 14:33:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2024-11-20 14:33:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 1.2167832167832169) internal successors, (174), 145 states have internal predecessors, (174), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2024-11-20 14:33:37,353 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 57 [2024-11-20 14:33:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:37,354 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2024-11-20 14:33:37,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 29 states have internal predecessors, (131), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2024-11-20 14:33:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 14:33:37,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:37,355 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:37,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 14:33:37,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-20 14:33:37,559 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:37,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1182884965, now seen corresponding path program 6 times [2024-11-20 14:33:37,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:37,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059193441] [2024-11-20 14:33:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:37,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 14:33:37,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059193441] [2024-11-20 14:33:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059193441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768127690] [2024-11-20 14:33:37,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 14:33:37,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:37,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:37,776 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:37,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 14:33:37,829 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 14:33:37,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:37,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 14:33:37,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-20 14:33:38,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-20 14:33:38,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768127690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:38,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:38,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 31 [2024-11-20 14:33:38,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389323389] [2024-11-20 14:33:38,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:38,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-20 14:33:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:38,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-20 14:33:38,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2024-11-20 14:33:38,340 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 27 states have internal predecessors, (107), 6 states have call successors, (6), 4 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:38,986 INFO L93 Difference]: Finished difference Result 238 states and 275 transitions. [2024-11-20 14:33:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-20 14:33:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 27 states have internal predecessors, (107), 6 states have call successors, (6), 4 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-20 14:33:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:38,987 INFO L225 Difference]: With dead ends: 238 [2024-11-20 14:33:38,987 INFO L226 Difference]: Without dead ends: 238 [2024-11-20 14:33:38,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=438, Invalid=2868, Unknown=0, NotChecked=0, Total=3306 [2024-11-20 14:33:38,988 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 176 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:38,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 210 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:33:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-20 14:33:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 191. [2024-11-20 14:33:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 181 states have (on average 1.1988950276243093) internal successors, (217), 182 states have internal predecessors, (217), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 225 transitions. [2024-11-20 14:33:38,996 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 225 transitions. Word has length 62 [2024-11-20 14:33:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:38,996 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 225 transitions. [2024-11-20 14:33:38,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 27 states have internal predecessors, (107), 6 states have call successors, (6), 4 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:38,999 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 225 transitions. [2024-11-20 14:33:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-20 14:33:39,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:39,001 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:39,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 14:33:39,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-20 14:33:39,204 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:39,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash 25599170, now seen corresponding path program 1 times [2024-11-20 14:33:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484293720] [2024-11-20 14:33:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:33:39,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:39,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484293720] [2024-11-20 14:33:39,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484293720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:39,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478969928] [2024-11-20 14:33:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:39,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:39,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:39,397 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:39,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 14:33:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:39,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 14:33:39,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 14:33:39,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 14:33:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478969928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:39,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:39,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 23 [2024-11-20 14:33:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583425239] [2024-11-20 14:33:39,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:39,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 14:33:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 14:33:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-11-20 14:33:39,755 INFO L87 Difference]: Start difference. First operand 191 states and 225 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 16 states have internal predecessors, (111), 6 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:39,877 INFO L93 Difference]: Finished difference Result 217 states and 251 transitions. [2024-11-20 14:33:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:33:39,877 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 16 states have internal predecessors, (111), 6 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-20 14:33:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:39,878 INFO L225 Difference]: With dead ends: 217 [2024-11-20 14:33:39,878 INFO L226 Difference]: Without dead ends: 176 [2024-11-20 14:33:39,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-20 14:33:39,879 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 70 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:39,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 368 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-20 14:33:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-20 14:33:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 167 states have (on average 1.1916167664670658) internal successors, (199), 168 states have internal predecessors, (199), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 206 transitions. [2024-11-20 14:33:39,882 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 206 transitions. Word has length 65 [2024-11-20 14:33:39,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:39,883 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 206 transitions. [2024-11-20 14:33:39,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 16 states have internal predecessors, (111), 6 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:39,883 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 206 transitions. [2024-11-20 14:33:39,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-20 14:33:39,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:39,883 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:39,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 14:33:40,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-20 14:33:40,084 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:40,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -697776251, now seen corresponding path program 2 times [2024-11-20 14:33:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:40,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927143978] [2024-11-20 14:33:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 38 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927143978] [2024-11-20 14:33:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927143978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:40,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025178285] [2024-11-20 14:33:40,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:33:40,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:40,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:40,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:40,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 14:33:40,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:33:40,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:40,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 14:33:40,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:40,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:40,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025178285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:40,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:40,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-20 14:33:40,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827386066] [2024-11-20 14:33:40,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:40,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 14:33:40,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:40,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 14:33:40,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-20 14:33:40,534 INFO L87 Difference]: Start difference. First operand 176 states and 206 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:40,700 INFO L93 Difference]: Finished difference Result 173 states and 203 transitions. [2024-11-20 14:33:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 14:33:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-20 14:33:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:40,700 INFO L225 Difference]: With dead ends: 173 [2024-11-20 14:33:40,701 INFO L226 Difference]: Without dead ends: 173 [2024-11-20 14:33:40,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2024-11-20 14:33:40,701 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 232 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:40,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 180 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-20 14:33:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2024-11-20 14:33:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 158 states have internal predecessors, (187), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 193 transitions. [2024-11-20 14:33:40,709 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 193 transitions. Word has length 69 [2024-11-20 14:33:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:40,709 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 193 transitions. [2024-11-20 14:33:40,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 193 transitions. [2024-11-20 14:33:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-20 14:33:40,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:40,710 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:40,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 14:33:40,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:40,911 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2024-11-20 14:33:40,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1808074787, now seen corresponding path program 3 times [2024-11-20 14:33:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:40,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819244474] [2024-11-20 14:33:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:40,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 14:33:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819244474] [2024-11-20 14:33:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819244474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999403301] [2024-11-20 14:33:41,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 14:33:41,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:41,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:41,102 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:33:41,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 14:33:41,155 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 14:33:41,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:41,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 14:33:41,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-20 14:33:41,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:41,265 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 29 treesize of output 25 [2024-11-20 14:33:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-20 14:33:41,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999403301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:41,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:41,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 19 [2024-11-20 14:33:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377922653] [2024-11-20 14:33:41,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:41,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 14:33:41,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:41,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 14:33:41,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-20 14:33:41,290 INFO L87 Difference]: Start difference. First operand 165 states and 193 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 17 states have internal predecessors, (100), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:41,841 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2024-11-20 14:33:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-20 14:33:41,841 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 17 states have internal predecessors, (100), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-20 14:33:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:41,842 INFO L225 Difference]: With dead ends: 268 [2024-11-20 14:33:41,842 INFO L226 Difference]: Without dead ends: 0 [2024-11-20 14:33:41,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1642, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 14:33:41,843 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 210 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:41,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 194 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:33:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-20 14:33:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-20 14:33:41,843 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 14:33:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-20 14:33:41,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2024-11-20 14:33:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:41,843 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 14:33:41,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 17 states have internal predecessors, (100), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 14:33:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-20 14:33:41,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-20 14:33:41,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-20 14:33:41,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-20 14:33:41,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (15 of 18 remaining) [2024-11-20 14:33:41,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (14 of 18 remaining) [2024-11-20 14:33:41,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (13 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (12 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-20 14:33:41,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-20 14:33:41,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-20 14:33:42,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:42,050 INFO L407 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:42,052 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 14:33:42,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:33:42 BoogieIcfgContainer [2024-11-20 14:33:42,054 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 14:33:42,055 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 14:33:42,055 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 14:33:42,055 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 14:33:42,055 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:33:24" (3/4) ... [2024-11-20 14:33:42,057 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 14:33:42,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure selectionSort [2024-11-20 14:33:42,063 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-20 14:33:42,063 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-20 14:33:42,063 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-20 14:33:42,063 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 14:33:42,151 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 14:33:42,151 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 14:33:42,151 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 14:33:42,152 INFO L158 Benchmark]: Toolchain (without parser) took 18505.12ms. Allocated memory was 182.5MB in the beginning and 222.3MB in the end (delta: 39.8MB). Free memory was 152.7MB in the beginning and 147.0MB in the end (delta: 5.7MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2024-11-20 14:33:42,152 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory was 87.9MB in the beginning and 87.8MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 14:33:42,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.95ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 141.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-20 14:33:42,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.96ms. Allocated memory is still 182.5MB. Free memory was 140.3MB in the beginning and 138.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 14:33:42,152 INFO L158 Benchmark]: Boogie Preprocessor took 32.46ms. Allocated memory is still 182.5MB. Free memory was 138.9MB in the beginning and 137.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 14:33:42,152 INFO L158 Benchmark]: RCFGBuilder took 339.65ms. Allocated memory is still 182.5MB. Free memory was 137.6MB in the beginning and 121.4MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-20 14:33:42,153 INFO L158 Benchmark]: TraceAbstraction took 17783.42ms. Allocated memory was 182.5MB in the beginning and 222.3MB in the end (delta: 39.8MB). Free memory was 121.4MB in the beginning and 151.7MB in the end (delta: -30.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2024-11-20 14:33:42,153 INFO L158 Benchmark]: Witness Printer took 96.45ms. Allocated memory is still 222.3MB. Free memory was 151.7MB in the beginning and 147.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 14:33:42,154 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory was 87.9MB in the beginning and 87.8MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.95ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 141.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.96ms. Allocated memory is still 182.5MB. Free memory was 140.3MB in the beginning and 138.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.46ms. Allocated memory is still 182.5MB. Free memory was 138.9MB in the beginning and 137.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 339.65ms. Allocated memory is still 182.5MB. Free memory was 137.6MB in the beginning and 121.4MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 17783.42ms. Allocated memory was 182.5MB in the beginning and 222.3MB in the end (delta: 39.8MB). Free memory was 121.4MB in the beginning and 151.7MB in the end (delta: -30.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Witness Printer took 96.45ms. Allocated memory is still 222.3MB. Free memory was 151.7MB in the beginning and 147.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 26]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 50 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 17.7s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2446 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2441 mSDsluCounter, 4066 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3384 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5641 IncrementalHoareTripleChecker+Invalid, 5731 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 682 mSDtfsCounter, 5641 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1592 GetRequests, 1077 SyntacticMatches, 40 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3070 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=22, InterpolantAutomatonStates: 310, 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, 25 MinimizatonAttempts, 350 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 1390 NumberOfCodeBlocks, 1301 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1961 ConstructedInterpolants, 0 QuantifiedInterpolants, 12599 SizeOfPredicates, 99 NumberOfNonLiveVariables, 2305 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 55 InterpolantComputations, 10 PerfectInterpolantSequences, 1218/1859 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 14:33:42,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE