./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/rewnifrev2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/rewnifrev2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a70897b8f9d01ade64d517ee2bf20dd64d1adb0a94ea95e1a8b2431f33b62533 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:47:53,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:47:53,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:47:53,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:47:53,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:47:53,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:47:53,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:47:53,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:47:53,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:47:53,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:47:53,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:47:53,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:47:53,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:47:53,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:47:53,855 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:47:53,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:47:53,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:47:53,855 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:47:53,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:47:53,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:47:53,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:47:53,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:47:53,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:47:53,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:47:53,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:47:53,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:47:53,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:47:53,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:47:53,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:47:53,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:47:53,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:47:53,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:47:53,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:47:53,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:47:53,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:47:53,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:47:53,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:47:53,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:47:53,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:47:53,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:47:53,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:47:53,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:47:53,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a70897b8f9d01ade64d517ee2bf20dd64d1adb0a94ea95e1a8b2431f33b62533 [2024-11-19 16:47:54,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:47:54,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:47:54,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:47:54,103 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:47:54,103 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:47:54,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/rewnifrev2.c [2024-11-19 16:47:55,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:47:55,548 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:47:55,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/rewnifrev2.c [2024-11-19 16:47:55,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecf0aa3f4/d9c690e423624521bdd08b916e881e30/FLAG01fa9c967 [2024-11-19 16:47:55,954 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecf0aa3f4/d9c690e423624521bdd08b916e881e30 [2024-11-19 16:47:55,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:47:55,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:47:55,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:47:55,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:47:55,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:47:55,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:47:55" (1/1) ... [2024-11-19 16:47:55,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b440a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:55, skipping insertion in model container [2024-11-19 16:47:55,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:47:55" (1/1) ... [2024-11-19 16:47:55,981 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:47:56,126 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/rewnifrev2.c[401,414] [2024-11-19 16:47:56,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:47:56,144 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:47:56,152 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/rewnifrev2.c[401,414] [2024-11-19 16:47:56,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:47:56,168 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:47:56,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56 WrapperNode [2024-11-19 16:47:56,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:47:56,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:47:56,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:47:56,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:47:56,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,196 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-19 16:47:56,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:47:56,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:47:56,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:47:56,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:47:56,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,205 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,219 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 16:47:56,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:47:56,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:47:56,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:47:56,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:47:56,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (1/1) ... [2024-11-19 16:47:56,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:47:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:47:56,254 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) [2024-11-19 16:47:56,257 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 [2024-11-19 16:47:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:47:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:47:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:47:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 16:47:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 16:47:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 16:47:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:47:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:47:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 16:47:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 16:47:56,343 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:47:56,344 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:47:56,440 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-19 16:47:56,440 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:47:56,449 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:47:56,450 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 16:47:56,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:47:56 BoogieIcfgContainer [2024-11-19 16:47:56,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:47:56,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:47:56,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:47:56,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:47:56,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:47:55" (1/3) ... [2024-11-19 16:47:56,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1ad3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:47:56, skipping insertion in model container [2024-11-19 16:47:56,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:47:56" (2/3) ... [2024-11-19 16:47:56,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1ad3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:47:56, skipping insertion in model container [2024-11-19 16:47:56,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:47:56" (3/3) ... [2024-11-19 16:47:56,456 INFO L112 eAbstractionObserver]: Analyzing ICFG rewnifrev2.c [2024-11-19 16:47:56,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:47:56,468 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:47:56,511 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:47:56,516 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=LoopHeads, 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;@28be2704, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:47:56,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:47:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:47:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 16:47:56,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:47:56,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:47:56,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:47:56,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:47:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash 126991449, now seen corresponding path program 1 times [2024-11-19 16:47:56,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:47:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213351658] [2024-11-19 16:47:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:47:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:47:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:47:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:56,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:47:56,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213351658] [2024-11-19 16:47:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213351658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:47:56,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:47:56,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 16:47:56,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566437023] [2024-11-19 16:47:56,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:47:56,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 16:47:56,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:47:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 16:47:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:47:56,675 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-19 16:47:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:47:56,687 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2024-11-19 16:47:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 16:47:56,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 [2024-11-19 16:47:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:47:56,695 INFO L225 Difference]: With dead ends: 29 [2024-11-19 16:47:56,695 INFO L226 Difference]: Without dead ends: 12 [2024-11-19 16:47:56,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:47:56,702 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:47:56,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:47:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-19 16:47:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-19 16:47:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:47:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-19 16:47:56,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2024-11-19 16:47:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:47:56,742 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-19 16:47:56,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-19 16:47:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-19 16:47:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 16:47:56,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:47:56,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:47:56,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 16:47:56,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:47:56,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:47:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash 121450323, now seen corresponding path program 1 times [2024-11-19 16:47:56,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:47:56,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056692365] [2024-11-19 16:47:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:47:56,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:47:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:47:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:47:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056692365] [2024-11-19 16:47:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056692365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:47:56,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:47:56,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:47:56,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256859599] [2024-11-19 16:47:56,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:47:56,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:47:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:47:56,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:47:56,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:47:56,851 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-19 16:47:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:47:56,878 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-11-19 16:47:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:47:56,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 [2024-11-19 16:47:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:47:56,879 INFO L225 Difference]: With dead ends: 20 [2024-11-19 16:47:56,879 INFO L226 Difference]: Without dead ends: 13 [2024-11-19 16:47:56,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:47:56,880 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:47:56,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:47:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-19 16:47:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-19 16:47:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:47:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-19 16:47:56,886 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2024-11-19 16:47:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:47:56,886 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-19 16:47:56,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-19 16:47:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-19 16:47:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 16:47:56,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:47:56,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:47:56,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 16:47:56,888 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:47:56,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:47:56,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1899941007, now seen corresponding path program 1 times [2024-11-19 16:47:56,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:47:56,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718395329] [2024-11-19 16:47:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:47:56,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:47:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:47:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:57,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:47:57,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718395329] [2024-11-19 16:47:57,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718395329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:47:57,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:47:57,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 16:47:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101710027] [2024-11-19 16:47:57,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:47:57,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 16:47:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:47:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 16:47:57,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 16:47:57,293 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2024-11-19 16:47:57,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:47:57,353 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-11-19 16:47:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 16:47:57,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 10 [2024-11-19 16:47:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:47:57,355 INFO L225 Difference]: With dead ends: 19 [2024-11-19 16:47:57,355 INFO L226 Difference]: Without dead ends: 17 [2024-11-19 16:47:57,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-19 16:47:57,356 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:47:57,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 17 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:47:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-19 16:47:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-11-19 16:47:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:47:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-19 16:47:57,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-19 16:47:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:47:57,365 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-19 16:47:57,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2024-11-19 16:47:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-19 16:47:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 16:47:57,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:47:57,365 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:47:57,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 16:47:57,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:47:57,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:47:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 604563239, now seen corresponding path program 1 times [2024-11-19 16:47:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:47:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598690935] [2024-11-19 16:47:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:47:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:47:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:47:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:47:57,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598690935] [2024-11-19 16:47:57,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598690935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:47:57,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864217252] [2024-11-19 16:47:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:47:57,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:47:57,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:47:57,578 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) [2024-11-19 16:47:57,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 16:47:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:47:57,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 16:47:57,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:47:57,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 16:47:57,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 11 [2024-11-19 16:47:57,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:47:57,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-19 16:47:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:57,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:47:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864217252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:47:58,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:47:58,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-11-19 16:47:58,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675413954] [2024-11-19 16:47:58,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:47:58,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 16:47:58,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:47:58,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 16:47:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-19 16:47:58,024 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2024-11-19 16:47:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:47:58,233 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-11-19 16:47:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 16:47:58,233 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 16:47:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:47:58,234 INFO L225 Difference]: With dead ends: 23 [2024-11-19 16:47:58,234 INFO L226 Difference]: Without dead ends: 21 [2024-11-19 16:47:58,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2024-11-19 16:47:58,235 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 55 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:47:58,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 35 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:47:58,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-19 16:47:58,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-19 16:47:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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) [2024-11-19 16:47:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-19 16:47:58,242 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2024-11-19 16:47:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:47:58,242 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-19 16:47:58,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2024-11-19 16:47:58,243 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-19 16:47:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 16:47:58,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:47:58,244 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:47:58,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 16:47:58,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:47:58,449 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:47:58,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:47:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1572614179, now seen corresponding path program 2 times [2024-11-19 16:47:58,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:47:58,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365779567] [2024-11-19 16:47:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:47:58,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:47:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:47:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:58,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:47:58,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365779567] [2024-11-19 16:47:58,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365779567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:47:58,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706836887] [2024-11-19 16:47:58,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:47:58,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:47:58,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:47:58,532 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) [2024-11-19 16:47:58,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 16:47:58,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:47:58,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:47:58,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 16:47:58,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:47:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:58,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:47:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:58,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706836887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:47:58,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:47:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-19 16:47:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833348768] [2024-11-19 16:47:58,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:47:58,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 16:47:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:47:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 16:47:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:47:58,692 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2024-11-19 16:47:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:47:58,734 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2024-11-19 16:47:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 16:47:58,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 16:47:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:47:58,736 INFO L225 Difference]: With dead ends: 38 [2024-11-19 16:47:58,736 INFO L226 Difference]: Without dead ends: 22 [2024-11-19 16:47:58,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:47:58,737 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:47:58,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:47:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-19 16:47:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-19 16:47:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:47:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-19 16:47:58,743 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2024-11-19 16:47:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:47:58,743 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-19 16:47:58,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2024-11-19 16:47:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-19 16:47:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 16:47:58,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:47:58,744 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:47:58,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 16:47:58,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:47:58,945 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:47:58,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:47:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1704999301, now seen corresponding path program 3 times [2024-11-19 16:47:58,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:47:58,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121998437] [2024-11-19 16:47:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:47:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:47:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:47:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:59,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:47:59,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121998437] [2024-11-19 16:47:59,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121998437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:47:59,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343721639] [2024-11-19 16:47:59,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:47:59,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:47:59,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:47:59,198 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) [2024-11-19 16:47:59,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 16:47:59,237 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 16:47:59,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:47:59,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 16:47:59,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:47:59,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 16:47:59,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 11 [2024-11-19 16:47:59,353 INFO L349 Elim1Store]: treesize reduction 99, result has 28.3 percent of original size [2024-11-19 16:47:59,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 58 [2024-11-19 16:47:59,883 INFO L349 Elim1Store]: treesize reduction 25, result has 49.0 percent of original size [2024-11-19 16:47:59,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 54 [2024-11-19 16:47:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:47:59,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:48:00,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-11-19 16:48:00,398 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 134 treesize of output 122 [2024-11-19 16:48:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:48:00,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343721639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:48:00,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:48:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 31 [2024-11-19 16:48:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606272948] [2024-11-19 16:48:00,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:48:00,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 16:48:00,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:48:00,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 16:48:00,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-11-19 16:48:00,439 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:48:01,632 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-19 16:48:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 16:48:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 16:48:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:48:01,633 INFO L225 Difference]: With dead ends: 44 [2024-11-19 16:48:01,633 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 16:48:01,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=648, Invalid=2322, Unknown=0, NotChecked=0, Total=2970 [2024-11-19 16:48:01,634 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 92 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 16:48:01,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 51 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 16:48:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 16:48:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 16:48:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 16:48:01,635 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2024-11-19 16:48:01,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:48:01,635 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 16:48:01,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:48:01,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 16:48:01,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 16:48:01,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 16:48:01,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 16:48:01,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:48:01,846 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-19 16:48:01,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 16:48:02,257 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 16:48:02,268 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a~0!offset [2024-11-19 16:48:02,271 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a~0!offset [2024-11-19 16:48:02,271 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,271 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,271 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a~0!offset [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,272 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,273 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,273 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,273 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,273 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,273 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 16:48:02,273 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 16:48:02,274 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a~0!offset [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,275 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a~0!offset [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,276 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a~0!offset [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~a~0!offset [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,277 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,278 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 16:48:02,278 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 16:48:02,278 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] [2024-11-19 16:48:02,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:48:02 BoogieIcfgContainer [2024-11-19 16:48:02,280 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 16:48:02,280 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 16:48:02,280 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 16:48:02,280 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 16:48:02,281 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:47:56" (3/4) ... [2024-11-19 16:48:02,283 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 16:48:02,287 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-19 16:48:02,288 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 16:48:02,288 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 16:48:02,288 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 16:48:02,349 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 16:48:02,349 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 16:48:02,349 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 16:48:02,350 INFO L158 Benchmark]: Toolchain (without parser) took 6391.60ms. Allocated memory was 155.2MB in the beginning and 239.1MB in the end (delta: 83.9MB). Free memory was 116.5MB in the beginning and 173.8MB in the end (delta: -57.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2024-11-19 16:48:02,350 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 155.2MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 16:48:02,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.16ms. Allocated memory is still 155.2MB. Free memory was 116.5MB in the beginning and 103.5MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 16:48:02,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.39ms. Allocated memory is still 155.2MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 16:48:02,351 INFO L158 Benchmark]: Boogie Preprocessor took 29.80ms. Allocated memory is still 155.2MB. Free memory was 101.8MB in the beginning and 99.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 16:48:02,351 INFO L158 Benchmark]: RCFGBuilder took 223.04ms. Allocated memory is still 155.2MB. Free memory was 99.8MB in the beginning and 88.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 16:48:02,351 INFO L158 Benchmark]: TraceAbstraction took 5828.53ms. Allocated memory was 155.2MB in the beginning and 239.1MB in the end (delta: 83.9MB). Free memory was 88.4MB in the beginning and 179.0MB in the end (delta: -90.6MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. [2024-11-19 16:48:02,351 INFO L158 Benchmark]: Witness Printer took 68.95ms. Allocated memory is still 239.1MB. Free memory was 179.0MB in the beginning and 173.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 16:48:02,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 155.2MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.16ms. Allocated memory is still 155.2MB. Free memory was 116.5MB in the beginning and 103.5MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.39ms. Allocated memory is still 155.2MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.80ms. Allocated memory is still 155.2MB. Free memory was 101.8MB in the beginning and 99.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 223.04ms. Allocated memory is still 155.2MB. Free memory was 99.8MB in the beginning and 88.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5828.53ms. Allocated memory was 155.2MB in the beginning and 239.1MB in the end (delta: 83.9MB). Free memory was 88.4MB in the beginning and 179.0MB in the end (delta: -90.6MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. * Witness Printer took 68.95ms. Allocated memory is still 239.1MB. Free memory was 179.0MB in the beginning and 173.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~a~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~a~0!base,]]] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 60 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 170 ConstructedInterpolants, 26 QuantifiedInterpolants, 2085 SizeOfPredicates, 15 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 33/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((0 <= i) || ((SIZE <= 2) && (i == 1))) || ((SIZE <= 2) && (2 <= i))) || ((SIZE <= 2) && (i == 0))) RESULT: Ultimate proved your program to be correct! [2024-11-19 16:48:02,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE