./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loop-acceleration/array3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loop-acceleration/array3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:51:08,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:51:09,035 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:51:09,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:51:09,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:51:09,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:51:09,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:51:09,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:51:09,076 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:51:09,077 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:51:09,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:51:09,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:51:09,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:51:09,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:51:09,079 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:51:09,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:51:09,080 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:51:09,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:51:09,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:51:09,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:51:09,081 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:51:09,082 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:51:09,082 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:51:09,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:51:09,083 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:51:09,083 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:51:09,083 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:51:09,083 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:51:09,084 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:51:09,084 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:51:09,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:51:09,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:51:09,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:51:09,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:51:09,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:51:09,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:51:09,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:51:09,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:51:09,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:51:09,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:51:09,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:51:09,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:51:09,088 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea [2024-11-17 00:51:09,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:51:09,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:51:09,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:51:09,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:51:09,373 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:51:09,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array3.i [2024-11-17 00:51:10,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:51:11,006 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:51:11,007 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i [2024-11-17 00:51:11,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc22c9f4e/06ec6a1d39a847929474ae39bcfaf19c/FLAG612b2b50b [2024-11-17 00:51:11,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc22c9f4e/06ec6a1d39a847929474ae39bcfaf19c [2024-11-17 00:51:11,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:51:11,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:51:11,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:51:11,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:51:11,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:51:11,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2c1d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11, skipping insertion in model container [2024-11-17 00:51:11,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:51:11,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:51:11,330 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:51:11,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:51:11,364 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:51:11,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11 WrapperNode [2024-11-17 00:51:11,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:51:11,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:51:11,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:51:11,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:51:11,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,396 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2024-11-17 00:51:11,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:51:11,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:51:11,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:51:11,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:51:11,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,428 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 00:51:11,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,433 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:51:11,445 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:51:11,445 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:51:11,445 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:51:11,446 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (1/1) ... [2024-11-17 00:51:11,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:51:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:11,482 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) [2024-11-17 00:51:11,485 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 [2024-11-17 00:51:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:51:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:51:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:51:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 00:51:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:51:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:51:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:51:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:51:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:51:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:51:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:51:11,588 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:51:11,590 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:51:11,786 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-17 00:51:11,786 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:51:11,799 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:51:11,803 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:51:11,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:51:11 BoogieIcfgContainer [2024-11-17 00:51:11,804 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:51:11,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:51:11,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:51:11,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:51:11,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:51:11" (1/3) ... [2024-11-17 00:51:11,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd29864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:51:11, skipping insertion in model container [2024-11-17 00:51:11,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:51:11" (2/3) ... [2024-11-17 00:51:11,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd29864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:51:11, skipping insertion in model container [2024-11-17 00:51:11,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:51:11" (3/3) ... [2024-11-17 00:51:11,818 INFO L112 eAbstractionObserver]: Analyzing ICFG array3.i [2024-11-17 00:51:11,838 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:51:11,838 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-17 00:51:11,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:51:11,894 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;@4763355a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:51:11,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 00:51:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:51:11,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:11,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:51:11,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:11,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 64859934, now seen corresponding path program 1 times [2024-11-17 00:51:11,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:11,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472188071] [2024-11-17 00:51:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:12,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:12,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472188071] [2024-11-17 00:51:12,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472188071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:51:12,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:51:12,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:51:12,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253030002] [2024-11-17 00:51:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:51:12,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:51:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:51:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:51:12,198 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:12,241 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-17 00:51:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:51:12,244 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 [2024-11-17 00:51:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:12,249 INFO L225 Difference]: With dead ends: 26 [2024-11-17 00:51:12,249 INFO L226 Difference]: Without dead ends: 23 [2024-11-17 00:51:12,251 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 [2024-11-17 00:51:12,254 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:12,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 25 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:51:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-17 00:51:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-17 00:51:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-17 00:51:12,288 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 5 [2024-11-17 00:51:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:12,288 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-17 00:51:12,289 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) [2024-11-17 00:51:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-17 00:51:12,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:51:12,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:12,290 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:51:12,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:51:12,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:12,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:12,292 INFO L85 PathProgramCache]: Analyzing trace with hash 64859935, now seen corresponding path program 1 times [2024-11-17 00:51:12,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:12,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469447663] [2024-11-17 00:51:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:12,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:12,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469447663] [2024-11-17 00:51:12,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469447663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:51:12,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:51:12,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:51:12,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422743586] [2024-11-17 00:51:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:51:12,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:51:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:51:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:51:12,439 INFO L87 Difference]: Start difference. First operand 23 states and 25 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) [2024-11-17 00:51:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:12,477 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2024-11-17 00:51:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:51:12,478 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 [2024-11-17 00:51:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:12,479 INFO L225 Difference]: With dead ends: 27 [2024-11-17 00:51:12,479 INFO L226 Difference]: Without dead ends: 27 [2024-11-17 00:51:12,479 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 [2024-11-17 00:51:12,481 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:12,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:51:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-17 00:51:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-17 00:51:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-17 00:51:12,486 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 5 [2024-11-17 00:51:12,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:12,486 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-17 00:51:12,486 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) [2024-11-17 00:51:12,487 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-17 00:51:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-17 00:51:12,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:12,488 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-17 00:51:12,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:51:12,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:12,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1897113153, now seen corresponding path program 1 times [2024-11-17 00:51:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961828027] [2024-11-17 00:51:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961828027] [2024-11-17 00:51:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961828027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:12,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708700520] [2024-11-17 00:51:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:12,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:12,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:12,720 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) [2024-11-17 00:51:12,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:51:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:12,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 00:51:12,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:51:12,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:51:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:13,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:51:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:13,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708700520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:51:13,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:51:13,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-17 00:51:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667337742] [2024-11-17 00:51:13,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:51:13,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:51:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:51:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:51:13,135 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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) [2024-11-17 00:51:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:13,267 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-11-17 00:51:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:51:13,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 [2024-11-17 00:51:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:13,270 INFO L225 Difference]: With dead ends: 36 [2024-11-17 00:51:13,270 INFO L226 Difference]: Without dead ends: 36 [2024-11-17 00:51:13,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:51:13,272 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:13,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 73 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:51:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-17 00:51:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-17 00:51:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-17 00:51:13,279 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 9 [2024-11-17 00:51:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:13,279 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-17 00:51:13,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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) [2024-11-17 00:51:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-17 00:51:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:51:13,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:13,280 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 00:51:13,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:51:13,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:13,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:13,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2099150044, now seen corresponding path program 1 times [2024-11-17 00:51:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:13,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730264240] [2024-11-17 00:51:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:51:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730264240] [2024-11-17 00:51:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730264240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94241340] [2024-11-17 00:51:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:13,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:13,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:13,647 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) [2024-11-17 00:51:13,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:51:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:13,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:51:13,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:51:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:13,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:51:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94241340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:51:13,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:51:13,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 15 [2024-11-17 00:51:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506776884] [2024-11-17 00:51:13,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:51:13,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 00:51:13,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:13,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 00:51:13,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:51:13,903 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:14,153 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2024-11-17 00:51:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:51:14,154 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 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 23 [2024-11-17 00:51:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:14,156 INFO L225 Difference]: With dead ends: 110 [2024-11-17 00:51:14,156 INFO L226 Difference]: Without dead ends: 110 [2024-11-17 00:51:14,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:51:14,158 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 174 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:14,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 78 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:51:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-17 00:51:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2024-11-17 00:51:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 99 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2024-11-17 00:51:14,173 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 23 [2024-11-17 00:51:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:14,173 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2024-11-17 00:51:14,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2024-11-17 00:51:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-17 00:51:14,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:14,175 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:51:14,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 00:51:14,379 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,SelfDestructingSolverStorable3 [2024-11-17 00:51:14,380 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:14,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1377598187, now seen corresponding path program 1 times [2024-11-17 00:51:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:14,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639881939] [2024-11-17 00:51:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:14,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:51:14,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639881939] [2024-11-17 00:51:14,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639881939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388672598] [2024-11-17 00:51:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:14,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:14,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:14,648 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) [2024-11-17 00:51:14,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:51:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:14,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 00:51:14,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:51:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:51:14,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:51:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:51:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388672598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:51:15,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:51:15,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-17 00:51:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328069160] [2024-11-17 00:51:15,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:51:15,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 00:51:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 00:51:15,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-17 00:51:15,090 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:15,360 INFO L93 Difference]: Finished difference Result 218 states and 263 transitions. [2024-11-17 00:51:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 00:51:15,361 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-17 00:51:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:15,365 INFO L225 Difference]: With dead ends: 218 [2024-11-17 00:51:15,365 INFO L226 Difference]: Without dead ends: 218 [2024-11-17 00:51:15,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-17 00:51:15,368 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 244 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:15,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 145 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:51:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-17 00:51:15,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 196. [2024-11-17 00:51:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 1.2487046632124352) internal successors, (241), 195 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 241 transitions. [2024-11-17 00:51:15,387 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 241 transitions. Word has length 51 [2024-11-17 00:51:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:15,387 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 241 transitions. [2024-11-17 00:51:15,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 241 transitions. [2024-11-17 00:51:15,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-17 00:51:15,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:15,390 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:51:15,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 00:51:15,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:15,595 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:15,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash -496073597, now seen corresponding path program 2 times [2024-11-17 00:51:15,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:15,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055914049] [2024-11-17 00:51:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:15,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:51:16,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:16,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055914049] [2024-11-17 00:51:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055914049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933561907] [2024-11-17 00:51:16,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:51:16,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:16,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:16,351 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) [2024-11-17 00:51:16,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:51:16,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:51:16,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:51:16,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 00:51:16,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:51:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:51:16,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:51:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:51:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933561907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:51:17,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:51:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-17 00:51:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117527201] [2024-11-17 00:51:17,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:51:17,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-17 00:51:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-17 00:51:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-17 00:51:17,436 INFO L87 Difference]: Start difference. First operand 196 states and 241 transitions. Second operand has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:17,984 INFO L93 Difference]: Finished difference Result 434 states and 527 transitions. [2024-11-17 00:51:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-17 00:51:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 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 99 [2024-11-17 00:51:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:17,989 INFO L225 Difference]: With dead ends: 434 [2024-11-17 00:51:17,989 INFO L226 Difference]: Without dead ends: 434 [2024-11-17 00:51:17,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-17 00:51:17,990 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 840 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:17,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 232 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:51:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-17 00:51:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 388. [2024-11-17 00:51:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 385 states have (on average 1.2493506493506494) internal successors, (481), 387 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 481 transitions. [2024-11-17 00:51:18,011 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 481 transitions. Word has length 99 [2024-11-17 00:51:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:18,012 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 481 transitions. [2024-11-17 00:51:18,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 481 transitions. [2024-11-17 00:51:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-17 00:51:18,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:18,017 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:51:18,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 00:51:18,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:18,217 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:18,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:18,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1422583731, now seen corresponding path program 3 times [2024-11-17 00:51:18,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:18,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809408576] [2024-11-17 00:51:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:51:20,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:20,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809408576] [2024-11-17 00:51:20,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809408576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:20,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127732049] [2024-11-17 00:51:20,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:51:20,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:20,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:20,470 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) [2024-11-17 00:51:20,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:51:20,561 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:51:20,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:51:20,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 00:51:20,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:51:20,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:51:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-17 00:51:21,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:51:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-17 00:51:22,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127732049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:51:22,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:51:22,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 4, 4] total 55 [2024-11-17 00:51:22,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118432083] [2024-11-17 00:51:22,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:51:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-17 00:51:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-17 00:51:22,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=1680, Unknown=0, NotChecked=0, Total=2970 [2024-11-17 00:51:22,103 INFO L87 Difference]: Start difference. First operand 388 states and 481 transitions. Second operand has 55 states, 55 states have (on average 4.0) internal successors, (220), 55 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:24,470 INFO L93 Difference]: Finished difference Result 459 states and 512 transitions. [2024-11-17 00:51:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-17 00:51:24,471 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.0) internal successors, (220), 55 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2024-11-17 00:51:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:24,474 INFO L225 Difference]: With dead ends: 459 [2024-11-17 00:51:24,474 INFO L226 Difference]: Without dead ends: 459 [2024-11-17 00:51:24,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3781, Invalid=6521, Unknown=0, NotChecked=0, Total=10302 [2024-11-17 00:51:24,477 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1340 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:24,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 274 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:51:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-17 00:51:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 402. [2024-11-17 00:51:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 399 states have (on average 1.1353383458646618) internal successors, (453), 401 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 453 transitions. [2024-11-17 00:51:24,489 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 453 transitions. Word has length 195 [2024-11-17 00:51:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:24,490 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 453 transitions. [2024-11-17 00:51:24,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.0) internal successors, (220), 55 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:24,490 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 453 transitions. [2024-11-17 00:51:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-17 00:51:24,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:24,493 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:51:24,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 00:51:24,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:24,694 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:24,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2064955184, now seen corresponding path program 1 times [2024-11-17 00:51:24,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:24,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387575215] [2024-11-17 00:51:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:24,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-17 00:51:25,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387575215] [2024-11-17 00:51:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387575215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:51:25,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:51:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:51:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534083876] [2024-11-17 00:51:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:51:25,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:51:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:51:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:51:25,019 INFO L87 Difference]: Start difference. First operand 402 states and 453 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:25,046 INFO L93 Difference]: Finished difference Result 398 states and 449 transitions. [2024-11-17 00:51:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:51:25,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-17 00:51:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:25,049 INFO L225 Difference]: With dead ends: 398 [2024-11-17 00:51:25,049 INFO L226 Difference]: Without dead ends: 398 [2024-11-17 00:51:25,049 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 [2024-11-17 00:51:25,051 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:25,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 26 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:51:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-17 00:51:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-17 00:51:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 396 states have (on average 1.1338383838383839) internal successors, (449), 397 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 449 transitions. [2024-11-17 00:51:25,068 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 449 transitions. Word has length 201 [2024-11-17 00:51:25,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:25,070 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 449 transitions. [2024-11-17 00:51:25,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 449 transitions. [2024-11-17 00:51:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-17 00:51:25,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:25,075 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:51:25,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:51:25,076 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:25,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2064978025, now seen corresponding path program 1 times [2024-11-17 00:51:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:25,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595755552] [2024-11-17 00:51:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:27,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:27,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595755552] [2024-11-17 00:51:27,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595755552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:27,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293352727] [2024-11-17 00:51:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:27,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:27,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:27,160 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) [2024-11-17 00:51:27,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:51:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:27,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-17 00:51:27,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:51:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:27,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:51:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:30,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293352727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:51:30,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:51:30,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 99 [2024-11-17 00:51:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755003180] [2024-11-17 00:51:30,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:51:30,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-17 00:51:30,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-17 00:51:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2024-11-17 00:51:30,159 INFO L87 Difference]: Start difference. First operand 398 states and 449 transitions. Second operand has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:32,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:32,198 INFO L93 Difference]: Finished difference Result 880 states and 1025 transitions. [2024-11-17 00:51:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-17 00:51:32,198 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-17 00:51:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:32,201 INFO L225 Difference]: With dead ends: 880 [2024-11-17 00:51:32,201 INFO L226 Difference]: Without dead ends: 880 [2024-11-17 00:51:32,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2024-11-17 00:51:32,204 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1592 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:32,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 432 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:51:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-17 00:51:32,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 784. [2024-11-17 00:51:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 782 states have (on average 1.1879795396419437) internal successors, (929), 783 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 929 transitions. [2024-11-17 00:51:32,217 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 929 transitions. Word has length 201 [2024-11-17 00:51:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:32,218 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 929 transitions. [2024-11-17 00:51:32,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 929 transitions. [2024-11-17 00:51:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-17 00:51:32,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:32,224 INFO L215 NwaCegarLoop]: trace histogram [97, 96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:51:32,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:51:32,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:32,429 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:32,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2023621867, now seen corresponding path program 2 times [2024-11-17 00:51:32,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802269966] [2024-11-17 00:51:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 0 proven. 18432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:51:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802269966] [2024-11-17 00:51:39,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802269966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786460871] [2024-11-17 00:51:39,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:51:39,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:39,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:39,391 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) [2024-11-17 00:51:39,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:51:39,540 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 00:51:39,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:51:39,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:51:39,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:51:40,850 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#A~0#1.base_18| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_18| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_18|) 0))) is different from true [2024-11-17 00:51:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18432 trivial. 0 not checked. [2024-11-17 00:51:40,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:51:40,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786460871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:51:40,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:51:40,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [99] total 101 [2024-11-17 00:51:40,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846126340] [2024-11-17 00:51:40,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:51:40,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:51:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:51:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:51:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4855, Invalid=5048, Unknown=1, NotChecked=196, Total=10100 [2024-11-17 00:51:40,870 INFO L87 Difference]: Start difference. First operand 784 states and 929 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:51:40,884 INFO L93 Difference]: Finished difference Result 783 states and 928 transitions. [2024-11-17 00:51:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:51:40,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 397 [2024-11-17 00:51:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:51:40,888 INFO L225 Difference]: With dead ends: 783 [2024-11-17 00:51:40,888 INFO L226 Difference]: Without dead ends: 778 [2024-11-17 00:51:40,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4855, Invalid=5048, Unknown=1, NotChecked=196, Total=10100 [2024-11-17 00:51:40,891 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:51:40,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2024-11-17 00:51:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-11-17 00:51:40,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 588. [2024-11-17 00:51:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 1.0034071550255537) internal successors, (589), 587 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 589 transitions. [2024-11-17 00:51:40,905 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 589 transitions. Word has length 397 [2024-11-17 00:51:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:51:40,906 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 589 transitions. [2024-11-17 00:51:40,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:51:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 589 transitions. [2024-11-17 00:51:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2024-11-17 00:51:40,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:51:40,919 INFO L215 NwaCegarLoop]: trace histogram [97, 96, 96, 96, 50, 49, 49, 49, 1, 1, 1, 1, 1] [2024-11-17 00:51:40,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 00:51:41,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:41,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-17 00:51:41,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:51:41,121 INFO L85 PathProgramCache]: Analyzing trace with hash 54962023, now seen corresponding path program 4 times [2024-11-17 00:51:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:51:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039955798] [2024-11-17 00:51:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:51:41,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:51:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:51:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 23234 backedges. 0 proven. 18432 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-17 00:51:48,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:51:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039955798] [2024-11-17 00:51:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039955798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:51:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859712885] [2024-11-17 00:51:48,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 00:51:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:51:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:51:48,063 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) [2024-11-17 00:51:48,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process