./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-examples/standard_strcpy_original-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-examples/standard_strcpy_original-1.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 25419aae3fa6b25817a0bb63109cdb8dd339b767b8ddb876acb37423139730d4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:29:25,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:29:25,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 18:29:25,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:29:25,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:29:25,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:29:25,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:29:25,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:29:25,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:29:25,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:29:25,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:29:25,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:29:25,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:29:25,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:29:25,405 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:29:25,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:29:25,406 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:29:25,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:29:25,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:29:25,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:29:25,409 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:29:25,413 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:29:25,413 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:29:25,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:29:25,413 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:29:25,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:29:25,413 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:29:25,414 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:29:25,414 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:29:25,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:29:25,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:29:25,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:29:25,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:29:25,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:29:25,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:29:25,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:29:25,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:29:25,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:29:25,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:29:25,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:29:25,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:29:25,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:29:25,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25419aae3fa6b25817a0bb63109cdb8dd339b767b8ddb876acb37423139730d4 [2024-11-22 18:29:25,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:29:25,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:29:25,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:29:25,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:29:25,679 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:29:25,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2024-11-22 18:29:26,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:29:27,035 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:29:27,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2024-11-22 18:29:27,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e9b9a0/ae1cf372394a461a85de309dea834a2c/FLAG75cdf10fc [2024-11-22 18:29:27,059 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e9b9a0/ae1cf372394a461a85de309dea834a2c [2024-11-22 18:29:27,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:29:27,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:29:27,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:29:27,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:29:27,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:29:27,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc9a475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27, skipping insertion in model container [2024-11-22 18:29:27,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:29:27,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:29:27,242 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:29:27,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:29:27,266 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:29:27,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27 WrapperNode [2024-11-22 18:29:27,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:29:27,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:29:27,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:29:27,268 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:29:27,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,295 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-22 18:29:27,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:29:27,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:29:27,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:29:27,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:29:27,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,313 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-22 18:29:27,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:29:27,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:29:27,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:29:27,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:29:27,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (1/1) ... [2024-11-22 18:29:27,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:29:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:27,347 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) [2024-11-22 18:29:27,350 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 [2024-11-22 18:29:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 18:29:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 18:29:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 18:29:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 18:29:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 18:29:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 18:29:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 18:29:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 18:29:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:29:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:29:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 18:29:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 18:29:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 18:29:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:29:27,447 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:29:27,449 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:29:27,684 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-22 18:29:27,684 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:29:27,694 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:29:27,695 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 18:29:27,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:29:27 BoogieIcfgContainer [2024-11-22 18:29:27,695 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:29:27,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:29:27,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:29:27,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:29:27,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:29:27" (1/3) ... [2024-11-22 18:29:27,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e11b66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:29:27, skipping insertion in model container [2024-11-22 18:29:27,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:29:27" (2/3) ... [2024-11-22 18:29:27,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e11b66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:29:27, skipping insertion in model container [2024-11-22 18:29:27,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:29:27" (3/3) ... [2024-11-22 18:29:27,705 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-1.i [2024-11-22 18:29:27,719 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:29:27,720 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-22 18:29:27,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:29:27,768 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;@7c4db6d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:29:27,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-22 18:29:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 43 states have internal predecessors, (51), 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) [2024-11-22 18:29:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-22 18:29:27,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:27,777 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-22 18:29:27,778 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:27,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-22 18:29:27,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:27,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124490838] [2024-11-22 18:29:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:28,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124490838] [2024-11-22 18:29:28,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124490838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:28,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:29:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462156387] [2024-11-22 18:29:28,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:28,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:29:28,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:29:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:28,048 INFO L87 Difference]: Start difference. First operand has 44 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:28,091 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2024-11-22 18:29:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:29:28,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-22 18:29:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:28,099 INFO L225 Difference]: With dead ends: 38 [2024-11-22 18:29:28,100 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 18:29:28,102 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 [2024-11-22 18:29:28,104 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:28,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 18:29:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-22 18:29:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.52) 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) [2024-11-22 18:29:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-22 18:29:28,127 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 4 [2024-11-22 18:29:28,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:28,127 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-22 18:29:28,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-22 18:29:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-22 18:29:28,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:28,128 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-22 18:29:28,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:29:28,128 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:28,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-22 18:29:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037362910] [2024-11-22 18:29:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:28,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:28,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037362910] [2024-11-22 18:29:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037362910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:28,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:28,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:29:28,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838499998] [2024-11-22 18:29:28,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:28,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:29:28,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:29:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:28,249 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:28,302 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-22 18:29:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:29:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-22 18:29:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:28,303 INFO L225 Difference]: With dead ends: 40 [2024-11-22 18:29:28,303 INFO L226 Difference]: Without dead ends: 40 [2024-11-22 18:29:28,303 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 [2024-11-22 18:29:28,304 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:28,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 49 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-22 18:29:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-22 18:29:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-11-22 18:29:28,313 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 4 [2024-11-22 18:29:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:28,313 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-11-22 18:29:28,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-11-22 18:29:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 18:29:28,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:28,314 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:28,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:29:28,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:28,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2024-11-22 18:29:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948751662] [2024-11-22 18:29:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:28,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:28,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948751662] [2024-11-22 18:29:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948751662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451499483] [2024-11-22 18:29:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:28,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:28,459 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) [2024-11-22 18:29:28,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:29:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:28,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 18:29:28,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:28,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-22 18:29:28,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:29:28,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-22 18:29:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:28,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:28,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451499483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:28,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:28,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 18:29:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580303671] [2024-11-22 18:29:28,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:28,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:29:28,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:28,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:29:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:29:28,761 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:28,854 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2024-11-22 18:29:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:29:28,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-22 18:29:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:28,857 INFO L225 Difference]: With dead ends: 48 [2024-11-22 18:29:28,857 INFO L226 Difference]: Without dead ends: 48 [2024-11-22 18:29:28,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:29:28,858 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:28,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 54 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-22 18:29:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-22 18:29:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 47 states have internal predecessors, (52), 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) [2024-11-22 18:29:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-22 18:29:28,864 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 8 [2024-11-22 18:29:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:28,865 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-22 18:29:28,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-22 18:29:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 18:29:28,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:28,866 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 18:29:28,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 18:29:29,066 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 [2024-11-22 18:29:29,067 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:29,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -4646106, now seen corresponding path program 1 times [2024-11-22 18:29:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:29,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887545950] [2024-11-22 18:29:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887545950] [2024-11-22 18:29:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887545950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:29,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916085352] [2024-11-22 18:29:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:29,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:29,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:29,174 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) [2024-11-22 18:29:29,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:29:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:29,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:29:29,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:29,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916085352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:29,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:29,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-22 18:29:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310873077] [2024-11-22 18:29:29,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:29,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 18:29:29,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 18:29:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:29:29,290 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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) [2024-11-22 18:29:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:29,475 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2024-11-22 18:29:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 18:29:29,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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) Word has length 13 [2024-11-22 18:29:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:29,477 INFO L225 Difference]: With dead ends: 187 [2024-11-22 18:29:29,477 INFO L226 Difference]: Without dead ends: 187 [2024-11-22 18:29:29,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-22 18:29:29,478 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 366 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:29,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 120 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-22 18:29:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 57. [2024-11-22 18:29:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.25) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-11-22 18:29:29,486 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 13 [2024-11-22 18:29:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:29,486 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-11-22 18:29:29,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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) [2024-11-22 18:29:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-11-22 18:29:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:29:29,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:29,486 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2024-11-22 18:29:29,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 18:29:29,687 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 [2024-11-22 18:29:29,687 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:29,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:29,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2024-11-22 18:29:29,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:29,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153301733] [2024-11-22 18:29:29,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:29,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:29,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:29,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153301733] [2024-11-22 18:29:29,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153301733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684246383] [2024-11-22 18:29:29,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:29,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:29,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:29,872 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) [2024-11-22 18:29:29,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:29:29,910 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:29,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:29,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 18:29:29,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:29,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-22 18:29:29,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:29:29,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-22 18:29:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:30,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:29:30,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684246383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:30,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:29:30,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2024-11-22 18:29:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51569648] [2024-11-22 18:29:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:30,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:29:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:29:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:29:30,098 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:30,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:30,158 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2024-11-22 18:29:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:29:30,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-22 18:29:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:30,159 INFO L225 Difference]: With dead ends: 56 [2024-11-22 18:29:30,159 INFO L226 Difference]: Without dead ends: 56 [2024-11-22 18:29:30,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:29:30,160 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:30,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-22 18:29:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-22 18:29:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-11-22 18:29:30,163 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 20 [2024-11-22 18:29:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:30,163 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-11-22 18:29:30,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-11-22 18:29:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 18:29:30,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:30,164 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:30,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 18:29:30,368 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 [2024-11-22 18:29:30,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:30,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1934674516, now seen corresponding path program 1 times [2024-11-22 18:29:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100762753] [2024-11-22 18:29:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 18:29:30,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:30,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100762753] [2024-11-22 18:29:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100762753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:30,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:30,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:29:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750223616] [2024-11-22 18:29:30,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:30,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:29:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:29:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:29:30,413 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-22 18:29:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:30,427 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-22 18:29:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:29:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 32 [2024-11-22 18:29:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:30,428 INFO L225 Difference]: With dead ends: 54 [2024-11-22 18:29:30,428 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 18:29:30,428 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 [2024-11-22 18:29:30,428 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:30,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 18:29:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-22 18:29:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 53 states have internal predecessors, (56), 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) [2024-11-22 18:29:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-22 18:29:30,432 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 32 [2024-11-22 18:29:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:30,432 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-22 18:29:30,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-22 18:29:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-22 18:29:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 18:29:30,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:30,433 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:30,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 18:29:30,433 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:30,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1934674515, now seen corresponding path program 1 times [2024-11-22 18:29:30,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:30,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071670144] [2024-11-22 18:29:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:30,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 18:29:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071670144] [2024-11-22 18:29:30,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071670144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:30,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:30,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:30,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679124127] [2024-11-22 18:29:30,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:30,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:30,529 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-22 18:29:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:30,562 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2024-11-22 18:29:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:30,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 32 [2024-11-22 18:29:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:30,564 INFO L225 Difference]: With dead ends: 70 [2024-11-22 18:29:30,564 INFO L226 Difference]: Without dead ends: 70 [2024-11-22 18:29:30,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:30,565 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:30,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:30,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-22 18:29:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2024-11-22 18:29:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 58 states have internal predecessors, (63), 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) [2024-11-22 18:29:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-22 18:29:30,569 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 32 [2024-11-22 18:29:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:30,569 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-22 18:29:30,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-22 18:29:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-22 18:29:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-22 18:29:30,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:30,570 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:30,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:29:30,570 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:30,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 498629567, now seen corresponding path program 1 times [2024-11-22 18:29:30,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:30,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987389816] [2024-11-22 18:29:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:30,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:30,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:30,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987389816] [2024-11-22 18:29:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987389816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868363866] [2024-11-22 18:29:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:30,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:30,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:30,670 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) [2024-11-22 18:29:30,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:29:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:30,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 18:29:30,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:30,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868363866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:30,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:30,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-22 18:29:30,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140687385] [2024-11-22 18:29:30,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:30,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 18:29:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:30,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 18:29:30,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:29:30,887 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:31,140 INFO L93 Difference]: Finished difference Result 364 states and 432 transitions. [2024-11-22 18:29:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 18:29:31,140 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-22 18:29:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:31,142 INFO L225 Difference]: With dead ends: 364 [2024-11-22 18:29:31,144 INFO L226 Difference]: Without dead ends: 364 [2024-11-22 18:29:31,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:29:31,145 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 654 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:31,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 202 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:29:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-22 18:29:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 91. [2024-11-22 18:29:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 90 states have internal predecessors, (95), 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) [2024-11-22 18:29:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2024-11-22 18:29:31,155 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 34 [2024-11-22 18:29:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:31,155 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2024-11-22 18:29:31,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2024-11-22 18:29:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 18:29:31,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:31,158 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:31,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 18:29:31,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:31,359 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:31,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash -618447913, now seen corresponding path program 2 times [2024-11-22 18:29:31,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:31,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736787565] [2024-11-22 18:29:31,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:31,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:31,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:31,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736787565] [2024-11-22 18:29:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736787565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:31,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968888414] [2024-11-22 18:29:31,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:31,641 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) [2024-11-22 18:29:31,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:29:31,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:29:31,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:31,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 18:29:31,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:31,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:29:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968888414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:32,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:32,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-22 18:29:32,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636131505] [2024-11-22 18:29:32,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:32,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 18:29:32,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 18:29:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 18:29:32,080 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 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) [2024-11-22 18:29:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:32,621 INFO L93 Difference]: Finished difference Result 748 states and 896 transitions. [2024-11-22 18:29:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 18:29:32,621 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 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 66 [2024-11-22 18:29:32,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:32,623 INFO L225 Difference]: With dead ends: 748 [2024-11-22 18:29:32,623 INFO L226 Difference]: Without dead ends: 748 [2024-11-22 18:29:32,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 18:29:32,624 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1302 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:32,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 428 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 18:29:32,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-11-22 18:29:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 155. [2024-11-22 18:29:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 149 states have (on average 1.0671140939597314) internal successors, (159), 154 states have internal predecessors, (159), 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) [2024-11-22 18:29:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2024-11-22 18:29:32,632 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 66 [2024-11-22 18:29:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:32,632 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2024-11-22 18:29:32,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 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) [2024-11-22 18:29:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2024-11-22 18:29:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-22 18:29:32,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:32,633 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:32,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 18:29:32,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:32,838 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:32,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1529191431, now seen corresponding path program 3 times [2024-11-22 18:29:32,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:32,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978531675] [2024-11-22 18:29:32,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:29:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:32,860 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 18:29:32,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-22 18:29:32,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978531675] [2024-11-22 18:29:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978531675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113280248] [2024-11-22 18:29:32,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:29:32,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:32,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:32,922 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) [2024-11-22 18:29:32,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 18:29:32,986 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 18:29:32,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:32,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 18:29:32,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 88 proven. 1 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-11-22 18:29:33,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:33,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-22 18:29:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-11-22 18:29:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113280248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:33,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:33,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 16 [2024-11-22 18:29:33,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188447185] [2024-11-22 18:29:33,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:33,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 18:29:33,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:33,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 18:29:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:29:33,376 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 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) [2024-11-22 18:29:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:33,518 INFO L93 Difference]: Finished difference Result 206 states and 217 transitions. [2024-11-22 18:29:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 18:29:33,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 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 130 [2024-11-22 18:29:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:33,520 INFO L225 Difference]: With dead ends: 206 [2024-11-22 18:29:33,520 INFO L226 Difference]: Without dead ends: 206 [2024-11-22 18:29:33,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2024-11-22 18:29:33,520 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 386 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:33,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 67 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:29:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-22 18:29:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 186. [2024-11-22 18:29:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.1166666666666667) internal successors, (201), 185 states have internal predecessors, (201), 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) [2024-11-22 18:29:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 201 transitions. [2024-11-22 18:29:33,525 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 201 transitions. Word has length 130 [2024-11-22 18:29:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:33,525 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 201 transitions. [2024-11-22 18:29:33,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 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) [2024-11-22 18:29:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 201 transitions. [2024-11-22 18:29:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-22 18:29:33,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:33,526 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:33,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 18:29:33,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:33,731 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:33,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash 112643812, now seen corresponding path program 1 times [2024-11-22 18:29:33,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:33,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011053268] [2024-11-22 18:29:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:34,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011053268] [2024-11-22 18:29:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011053268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906283074] [2024-11-22 18:29:34,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:34,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:34,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:34,512 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) [2024-11-22 18:29:34,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 18:29:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:34,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 18:29:34,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:34,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:29:35,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906283074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:35,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:35,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2024-11-22 18:29:35,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198469881] [2024-11-22 18:29:35,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:35,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-22 18:29:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-22 18:29:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-22 18:29:35,730 INFO L87 Difference]: Start difference. First operand 186 states and 201 transitions. Second operand has 65 states, 65 states have (on average 3.9692307692307693) internal successors, (258), 65 states have internal predecessors, (258), 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) [2024-11-22 18:29:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:37,491 INFO L93 Difference]: Finished difference Result 1516 states and 1818 transitions. [2024-11-22 18:29:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-22 18:29:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.9692307692307693) internal successors, (258), 65 states have internal predecessors, (258), 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 131 [2024-11-22 18:29:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:37,496 INFO L225 Difference]: With dead ends: 1516 [2024-11-22 18:29:37,496 INFO L226 Difference]: Without dead ends: 1516 [2024-11-22 18:29:37,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-22 18:29:37,498 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4200 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:37,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4200 Valid, 844 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 18:29:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2024-11-22 18:29:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 314. [2024-11-22 18:29:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 308 states have (on average 1.0681818181818181) internal successors, (329), 313 states have internal predecessors, (329), 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) [2024-11-22 18:29:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 329 transitions. [2024-11-22 18:29:37,511 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 329 transitions. Word has length 131 [2024-11-22 18:29:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:37,512 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 329 transitions. [2024-11-22 18:29:37,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.9692307692307693) internal successors, (258), 65 states have internal predecessors, (258), 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) [2024-11-22 18:29:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 329 transitions. [2024-11-22 18:29:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-22 18:29:37,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:37,518 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:37,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 18:29:37,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:37,719 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:37,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1594268292, now seen corresponding path program 2 times [2024-11-22 18:29:37,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:37,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080764435] [2024-11-22 18:29:37,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:37,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:37,751 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 18:29:37,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-22 18:29:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:37,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080764435] [2024-11-22 18:29:37,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080764435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:29:37,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:29:37,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:29:37,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777977201] [2024-11-22 18:29:37,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:29:37,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:29:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:29:37,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:37,814 INFO L87 Difference]: Start difference. First operand 314 states and 329 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:37,836 INFO L93 Difference]: Finished difference Result 313 states and 328 transitions. [2024-11-22 18:29:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:29:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2024-11-22 18:29:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:37,838 INFO L225 Difference]: With dead ends: 313 [2024-11-22 18:29:37,838 INFO L226 Difference]: Without dead ends: 311 [2024-11-22 18:29:37,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:29:37,838 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:37,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:29:37,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-22 18:29:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2024-11-22 18:29:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 306 states have (on average 1.0555555555555556) internal successors, (323), 310 states have internal predecessors, (323), 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) [2024-11-22 18:29:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 323 transitions. [2024-11-22 18:29:37,843 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 323 transitions. Word has length 259 [2024-11-22 18:29:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:37,844 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 323 transitions. [2024-11-22 18:29:37,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:29:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 323 transitions. [2024-11-22 18:29:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 18:29:37,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:37,849 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:37,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 18:29:37,850 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:37,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1630734784, now seen corresponding path program 1 times [2024-11-22 18:29:37,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:37,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756893765] [2024-11-22 18:29:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7630 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 18:29:40,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:40,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756893765] [2024-11-22 18:29:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756893765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313573842] [2024-11-22 18:29:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:29:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:40,386 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) [2024-11-22 18:29:40,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 18:29:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:29:40,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-22 18:29:40,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7630 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 18:29:40,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:29:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7630 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 18:29:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313573842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:29:43,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:29:43,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2024-11-22 18:29:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199860268] [2024-11-22 18:29:43,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:29:43,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-22 18:29:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:29:43,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-22 18:29:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-22 18:29:43,988 INFO L87 Difference]: Start difference. First operand 311 states and 323 transitions. Second operand has 129 states, 129 states have (on average 3.9767441860465116) internal successors, (513), 129 states have internal predecessors, (513), 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) [2024-11-22 18:29:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:29:57,228 INFO L93 Difference]: Finished difference Result 2671 states and 3293 transitions. [2024-11-22 18:29:57,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-22 18:29:57,229 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 3.9767441860465116) internal successors, (513), 129 states have internal predecessors, (513), 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 261 [2024-11-22 18:29:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:29:57,235 INFO L225 Difference]: With dead ends: 2671 [2024-11-22 18:29:57,235 INFO L226 Difference]: Without dead ends: 2671 [2024-11-22 18:29:57,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-22 18:29:57,238 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9276 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 2246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9276 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2246 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 18:29:57,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9276 Valid, 1279 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2246 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 18:29:57,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2024-11-22 18:29:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 567. [2024-11-22 18:29:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 562 states have (on average 1.0302491103202847) internal successors, (579), 566 states have internal predecessors, (579), 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) [2024-11-22 18:29:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 579 transitions. [2024-11-22 18:29:57,249 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 579 transitions. Word has length 261 [2024-11-22 18:29:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:29:57,249 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 579 transitions. [2024-11-22 18:29:57,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 3.9767441860465116) internal successors, (513), 129 states have internal predecessors, (513), 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) [2024-11-22 18:29:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 579 transitions. [2024-11-22 18:29:57,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-11-22 18:29:57,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:29:57,254 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:29:57,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 18:29:57,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 18:29:57,454 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:29:57,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:29:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2101620480, now seen corresponding path program 2 times [2024-11-22 18:29:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:29:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635110317] [2024-11-22 18:29:57,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:57,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:29:57,493 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 18:29:57,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 31630 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31627 trivial. 0 not checked. [2024-11-22 18:29:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:29:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635110317] [2024-11-22 18:29:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635110317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:29:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137697391] [2024-11-22 18:29:57,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:29:57,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:29:57,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:29:57,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:29:57,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 18:29:57,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 18:29:57,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:29:57,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 18:29:57,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:29:57,724 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 [2024-11-22 18:29:57,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-22 18:29:57,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-22 18:30:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 31630 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31627 trivial. 0 not checked. [2024-11-22 18:30:00,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31630 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31627 trivial. 0 not checked. [2024-11-22 18:30:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137697391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:07,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-22 18:30:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362882262] [2024-11-22 18:30:07,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:07,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 18:30:07,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 18:30:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:30:07,488 INFO L87 Difference]: Start difference. First operand 567 states and 579 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 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) [2024-11-22 18:30:09,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 18:30:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:30:10,021 INFO L93 Difference]: Finished difference Result 565 states and 573 transitions. [2024-11-22 18:30:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:30:10,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 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 517 [2024-11-22 18:30:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:30:10,023 INFO L225 Difference]: With dead ends: 565 [2024-11-22 18:30:10,023 INFO L226 Difference]: Without dead ends: 565 [2024-11-22 18:30:10,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:30:10,023 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:30:10,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 15 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-22 18:30:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-22 18:30:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-22 18:30:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 562 states have (on average 1.019572953736655) internal successors, (573), 564 states have internal predecessors, (573), 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) [2024-11-22 18:30:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 573 transitions. [2024-11-22 18:30:10,028 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 573 transitions. Word has length 517 [2024-11-22 18:30:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:30:10,029 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 573 transitions. [2024-11-22 18:30:10,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 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) [2024-11-22 18:30:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 573 transitions. [2024-11-22 18:30:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2024-11-22 18:30:10,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:30:10,034 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:30:10,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 18:30:10,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 18:30:10,235 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-22 18:30:10,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:30:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash 140349562, now seen corresponding path program 1 times [2024-11-22 18:30:10,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:30:10,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023289734] [2024-11-22 18:30:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:30:10,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:30:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:30:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:30:18,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:30:18,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023289734] [2024-11-22 18:30:18,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023289734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:30:18,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71193083] [2024-11-22 18:30:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:30:18,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:30:18,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:30:18,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:30:18,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 18:30:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:30:18,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-22 18:30:18,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:30:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:30:19,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:30:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:30:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71193083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:30:32,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:30:32,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 257 [2024-11-22 18:30:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087991049] [2024-11-22 18:30:32,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:30:32,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2024-11-22 18:30:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:30:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2024-11-22 18:30:32,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2024-11-22 18:30:32,696 INFO L87 Difference]: Start difference. First operand 565 states and 573 transitions. Second operand has 257 states, 257 states have (on average 4.011673151750973) internal successors, (1031), 257 states have internal predecessors, (1031), 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)