./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_7-1.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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:10:15,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:10:15,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:10:15,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:10:15,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:10:15,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:10:15,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:10:15,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:10:15,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:10:15,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:10:15,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:10:15,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:10:15,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:10:15,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:10:15,696 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:10:15,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:10:15,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:10:15,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:10:15,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:10:15,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:10:15,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:10:15,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:10:15,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:10:15,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:10:15,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:10:15,704 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:10:15,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:10:15,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:10:15,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:10:15,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:10:15,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:10:15,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:10:15,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:10:15,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:10:15,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:10:15,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:10:15,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:10:15,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:10:15,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:10:15,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:10:15,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:10:15,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:10:15,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2024-11-22 02:10:15,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:10:16,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:10:16,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:10:16,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:10:16,011 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:10:16,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-11-22 02:10:17,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:10:17,661 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:10:17,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-11-22 02:10:17,671 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2115d016e/56a67dd0685447149d353c8efe9329f0/FLAG35bbf7200 [2024-11-22 02:10:18,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2115d016e/56a67dd0685447149d353c8efe9329f0 [2024-11-22 02:10:18,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:10:18,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:10:18,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:10:18,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:10:18,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:10:18,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139cc639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18, skipping insertion in model container [2024-11-22 02:10:18,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:10:18,211 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/recursive-simple/fibo_7-1.c[741,754] [2024-11-22 02:10:18,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:10:18,227 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:10:18,239 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/recursive-simple/fibo_7-1.c[741,754] [2024-11-22 02:10:18,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:10:18,255 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:10:18,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18 WrapperNode [2024-11-22 02:10:18,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:10:18,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:10:18,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:10:18,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:10:18,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,287 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:10:18,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:10:18,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:10:18,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:10:18,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:10:18,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,314 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:10:18,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:10:18,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:10:18,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:10:18,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:10:18,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (1/1) ... [2024-11-22 02:10:18,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:10:18,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:18,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:10:18,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:10:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:10:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:10:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:10:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:10:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-22 02:10:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-22 02:10:18,480 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:10:18,482 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:10:18,676 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-22 02:10:18,676 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:10:18,692 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:10:18,692 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:10:18,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:18 BoogieIcfgContainer [2024-11-22 02:10:18,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:10:18,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:10:18,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:10:18,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:10:18,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:10:18" (1/3) ... [2024-11-22 02:10:18,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b1dd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:10:18, skipping insertion in model container [2024-11-22 02:10:18,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:18" (2/3) ... [2024-11-22 02:10:18,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b1dd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:10:18, skipping insertion in model container [2024-11-22 02:10:18,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:18" (3/3) ... [2024-11-22 02:10:18,704 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2024-11-22 02:10:18,720 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:10:18,720 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:10:18,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:10:18,788 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;@5a197cfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:10:18,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:10:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:10:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:10:18,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:18,803 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:18,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:18,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2024-11-22 02:10:18,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:18,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787391154] [2024-11-22 02:10:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:10:19,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:19,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787391154] [2024-11-22 02:10:19,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787391154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:10:19,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:10:19,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:10:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032674236] [2024-11-22 02:10:19,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:10:19,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:10:19,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:10:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:19,079 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:19,170 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-22 02:10:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:10:19,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-22 02:10:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:19,179 INFO L225 Difference]: With dead ends: 32 [2024-11-22 02:10:19,179 INFO L226 Difference]: Without dead ends: 20 [2024-11-22 02:10:19,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:19,184 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:19,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-22 02:10:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-22 02:10:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:10:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-22 02:10:19,214 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-22 02:10:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:19,215 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-22 02:10:19,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-22 02:10:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:10:19,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:19,217 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:19,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:10:19,217 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:19,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:19,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2024-11-22 02:10:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:19,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050585089] [2024-11-22 02:10:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:19,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:10:19,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:19,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050585089] [2024-11-22 02:10:19,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050585089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:10:19,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:10:19,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:10:19,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659573327] [2024-11-22 02:10:19,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:10:19,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:10:19,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:19,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:10:19,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:19,318 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:19,375 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-11-22 02:10:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:10:19,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-22 02:10:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:19,376 INFO L225 Difference]: With dead ends: 24 [2024-11-22 02:10:19,377 INFO L226 Difference]: Without dead ends: 20 [2024-11-22 02:10:19,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:19,378 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:19,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:10:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-22 02:10:19,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-22 02:10:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:10:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-22 02:10:19,392 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-11-22 02:10:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:19,392 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-22 02:10:19,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-22 02:10:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:10:19,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:19,396 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:19,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:10:19,396 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:19,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2024-11-22 02:10:19,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653660759] [2024-11-22 02:10:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:19,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:10:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653660759] [2024-11-22 02:10:19,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653660759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226407011] [2024-11-22 02:10:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:19,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:19,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:19,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:10:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:19,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:19,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:10:19,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 02:10:19,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226407011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:19,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:19,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2024-11-22 02:10:19,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299118477] [2024-11-22 02:10:19,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:19,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 02:10:19,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:19,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 02:10:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:10:19,983 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:10:20,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:20,085 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-22 02:10:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:10:20,085 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-22 02:10:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:20,086 INFO L225 Difference]: With dead ends: 35 [2024-11-22 02:10:20,087 INFO L226 Difference]: Without dead ends: 20 [2024-11-22 02:10:20,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:10:20,088 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:20,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-22 02:10:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-22 02:10:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 02:10:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-22 02:10:20,095 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2024-11-22 02:10:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:20,096 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-22 02:10:20,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:10:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-22 02:10:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:10:20,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:20,098 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:20,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:10:20,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:20,299 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:20,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2024-11-22 02:10:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:20,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146562599] [2024-11-22 02:10:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:10:20,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146562599] [2024-11-22 02:10:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146562599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241094199] [2024-11-22 02:10:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:20,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:20,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:20,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:20,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:10:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:20,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:20,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:10:20,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 02:10:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241094199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:20,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:20,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-22 02:10:20,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524414031] [2024-11-22 02:10:20,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:20,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 02:10:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 02:10:20,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:10:20,704 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:10:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:20,783 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-22 02:10:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:10:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-22 02:10:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:20,785 INFO L225 Difference]: With dead ends: 29 [2024-11-22 02:10:20,785 INFO L226 Difference]: Without dead ends: 25 [2024-11-22 02:10:20,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:10:20,786 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:20,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-22 02:10:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-22 02:10:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-22 02:10:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-22 02:10:20,798 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2024-11-22 02:10:20,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:20,799 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-22 02:10:20,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:10:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-22 02:10:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:10:20,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:20,803 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:20,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:10:21,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 02:10:21,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:21,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2024-11-22 02:10:21,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:21,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574819966] [2024-11-22 02:10:21,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:21,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:21,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:21,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 02:10:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:21,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574819966] [2024-11-22 02:10:21,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574819966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860262709] [2024-11-22 02:10:21,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:21,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:21,198 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) [2024-11-22 02:10:21,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:10:21,239 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:21,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:21,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:21,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 02:10:21,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 02:10:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860262709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:21,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2024-11-22 02:10:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419425626] [2024-11-22 02:10:21,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:21,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:10:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:21,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:10:21,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:10:21,699 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-22 02:10:21,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:21,925 INFO L93 Difference]: Finished difference Result 60 states and 93 transitions. [2024-11-22 02:10:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:10:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2024-11-22 02:10:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:21,927 INFO L225 Difference]: With dead ends: 60 [2024-11-22 02:10:21,927 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 02:10:21,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:10:21,932 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:21,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 95 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 02:10:21,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-22 02:10:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-22 02:10:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-22 02:10:21,943 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2024-11-22 02:10:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:21,944 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-22 02:10:21,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-22 02:10:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-22 02:10:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 02:10:21,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:21,946 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:21,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:22,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:22,151 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:22,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash -721858190, now seen corresponding path program 3 times [2024-11-22 02:10:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:22,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611982129] [2024-11-22 02:10:22,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:22,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:10:22,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-22 02:10:22,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611982129] [2024-11-22 02:10:22,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611982129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123403842] [2024-11-22 02:10:22,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:22,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:22,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:22,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:22,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:10:22,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:10:22,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:22,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:22,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-22 02:10:22,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-22 02:10:22,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123403842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:22,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2024-11-22 02:10:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553886991] [2024-11-22 02:10:22,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:22,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 02:10:22,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 02:10:22,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:10:22,856 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-22 02:10:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:22,968 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2024-11-22 02:10:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:10:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2024-11-22 02:10:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:22,971 INFO L225 Difference]: With dead ends: 72 [2024-11-22 02:10:22,971 INFO L226 Difference]: Without dead ends: 40 [2024-11-22 02:10:22,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:10:22,972 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:22,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:22,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-22 02:10:22,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-22 02:10:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-22 02:10:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-22 02:10:22,980 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 93 [2024-11-22 02:10:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:22,981 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-22 02:10:22,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-22 02:10:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-22 02:10:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 02:10:22,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:22,984 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:22,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:10:23,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:23,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:23,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash 366248375, now seen corresponding path program 4 times [2024-11-22 02:10:23,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578174906] [2024-11-22 02:10:23,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:23,212 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:23,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-22 02:10:23,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578174906] [2024-11-22 02:10:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578174906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890107719] [2024-11-22 02:10:23,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:23,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:23,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:23,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:23,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:10:23,371 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:23,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:23,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:10:23,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-22 02:10:23,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 142 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-22 02:10:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890107719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:23,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:23,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 13 [2024-11-22 02:10:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714463972] [2024-11-22 02:10:23,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:23,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 02:10:23,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 02:10:23,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:10:23,948 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-22 02:10:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:24,045 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-11-22 02:10:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:10:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) Word has length 79 [2024-11-22 02:10:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:24,048 INFO L225 Difference]: With dead ends: 49 [2024-11-22 02:10:24,048 INFO L226 Difference]: Without dead ends: 45 [2024-11-22 02:10:24,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 152 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:10:24,049 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:24,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 65 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-22 02:10:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-22 02:10:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.09375) internal successors, (35), 30 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-22 02:10:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-22 02:10:24,064 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 79 [2024-11-22 02:10:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:24,064 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-22 02:10:24,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-22 02:10:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-22 02:10:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-22 02:10:24,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:24,073 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 19, 11, 11, 11, 11, 11, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:24,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:10:24,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:24,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:24,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1279375831, now seen corresponding path program 5 times [2024-11-22 02:10:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701451897] [2024-11-22 02:10:24,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:24,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:24,296 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-22 02:10:24,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 175 proven. 322 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2024-11-22 02:10:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701451897] [2024-11-22 02:10:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701451897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882641045] [2024-11-22 02:10:24,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:24,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:24,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:24,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:10:24,520 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-22 02:10:24,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:24,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:10:24,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 822 proven. 67 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-22 02:10:24,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 175 proven. 325 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-11-22 02:10:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882641045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:25,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:25,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 13 [2024-11-22 02:10:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27608071] [2024-11-22 02:10:25,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:25,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 02:10:25,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 02:10:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:10:25,200 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-22 02:10:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:25,421 INFO L93 Difference]: Finished difference Result 98 states and 136 transitions. [2024-11-22 02:10:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:10:25,422 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) Word has length 161 [2024-11-22 02:10:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:25,424 INFO L225 Difference]: With dead ends: 98 [2024-11-22 02:10:25,424 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 02:10:25,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 315 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:10:25,427 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 46 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:25,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 67 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 02:10:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-22 02:10:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.135135135135135) internal successors, (42), 34 states have internal predecessors, (42), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 02:10:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-22 02:10:25,441 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 161 [2024-11-22 02:10:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:25,441 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-22 02:10:25,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-22 02:10:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-22 02:10:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-22 02:10:25,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:25,447 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:25,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:10:25,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:25,648 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:25,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1447005449, now seen corresponding path program 6 times [2024-11-22 02:10:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126142994] [2024-11-22 02:10:25,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:25,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:25,673 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-22 02:10:25,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 55 proven. 317 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-22 02:10:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126142994] [2024-11-22 02:10:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126142994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293512453] [2024-11-22 02:10:25,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:25,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:25,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:25,831 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:25,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:10:25,908 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-22 02:10:25,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:25,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:10:25,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 326 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-22 02:10:25,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 352 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2024-11-22 02:10:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293512453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:26,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:26,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-22 02:10:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813338475] [2024-11-22 02:10:26,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:26,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:10:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:26,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:10:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:10:26,850 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:10:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:26,956 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-22 02:10:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:10:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) Word has length 133 [2024-11-22 02:10:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:26,958 INFO L225 Difference]: With dead ends: 60 [2024-11-22 02:10:26,958 INFO L226 Difference]: Without dead ends: 56 [2024-11-22 02:10:26,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 258 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:10:26,963 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:26,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 70 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-22 02:10:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-22 02:10:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 37 states have internal predecessors, (45), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-22 02:10:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2024-11-22 02:10:26,978 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 133 [2024-11-22 02:10:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:26,979 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2024-11-22 02:10:26,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:10:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2024-11-22 02:10:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-22 02:10:26,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:26,984 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:26,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:10:27,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:27,185 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:27,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:27,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1022210831, now seen corresponding path program 7 times [2024-11-22 02:10:27,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:27,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545841913] [2024-11-22 02:10:27,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:27,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2024-11-22 02:10:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545841913] [2024-11-22 02:10:27,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545841913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789607357] [2024-11-22 02:10:27,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:27,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:27,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:10:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:27,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:27,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2024-11-22 02:10:27,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 756 refuted. 0 times theorem prover too weak. 1716 trivial. 0 not checked. [2024-11-22 02:10:28,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789607357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:28,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:28,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 16 [2024-11-22 02:10:28,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984992865] [2024-11-22 02:10:28,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:28,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:10:28,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:10:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:10:28,943 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 13 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-22 02:10:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:29,055 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2024-11-22 02:10:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:10:29,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 13 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 13 states have call successors, (18) Word has length 215 [2024-11-22 02:10:29,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:29,059 INFO L225 Difference]: With dead ends: 65 [2024-11-22 02:10:29,060 INFO L226 Difference]: Without dead ends: 61 [2024-11-22 02:10:29,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 422 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:10:29,061 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:29,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 74 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-22 02:10:29,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-22 02:10:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 40 states have internal predecessors, (48), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (30), 13 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-22 02:10:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2024-11-22 02:10:29,076 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 215 [2024-11-22 02:10:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:29,078 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2024-11-22 02:10:29,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 13 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-22 02:10:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2024-11-22 02:10:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-22 02:10:29,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:29,085 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 44, 27, 27, 27, 27, 27, 27, 27, 17, 11, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:29,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:10:29,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:10:29,287 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:29,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:29,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2134744863, now seen corresponding path program 8 times [2024-11-22 02:10:29,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:29,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358296586] [2024-11-22 02:10:29,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:29,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:29,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:29,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8290 backedges. 451 proven. 994 refuted. 0 times theorem prover too weak. 6845 trivial. 0 not checked. [2024-11-22 02:10:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358296586] [2024-11-22 02:10:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358296586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488085130] [2024-11-22 02:10:29,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:29,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:29,847 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:29,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:10:30,017 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:30,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:30,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:30,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8290 backedges. 519 proven. 1345 refuted. 0 times theorem prover too weak. 6426 trivial. 0 not checked. [2024-11-22 02:10:30,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8290 backedges. 523 proven. 1392 refuted. 0 times theorem prover too weak. 6375 trivial. 0 not checked. [2024-11-22 02:10:32,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488085130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:32,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:32,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 21 [2024-11-22 02:10:32,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751666923] [2024-11-22 02:10:32,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:32,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:10:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:10:32,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:10:32,222 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 21 states, 20 states have (on average 3.1) internal successors, (62), 21 states have internal predecessors, (62), 15 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-22 02:10:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:32,387 INFO L93 Difference]: Finished difference Result 99 states and 204 transitions. [2024-11-22 02:10:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:10:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.1) internal successors, (62), 21 states have internal predecessors, (62), 15 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) Word has length 378 [2024-11-22 02:10:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:32,389 INFO L225 Difference]: With dead ends: 99 [2024-11-22 02:10:32,389 INFO L226 Difference]: Without dead ends: 61 [2024-11-22 02:10:32,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 742 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:32,391 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:32,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 141 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-22 02:10:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-22 02:10:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (18), 13 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-22 02:10:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2024-11-22 02:10:32,405 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 378 [2024-11-22 02:10:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:32,406 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2024-11-22 02:10:32,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.1) internal successors, (62), 21 states have internal predecessors, (62), 15 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-22 02:10:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2024-11-22 02:10:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-22 02:10:32,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:32,411 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:32,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:10:32,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:32,615 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:32,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1099173212, now seen corresponding path program 9 times [2024-11-22 02:10:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:32,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667244120] [2024-11-22 02:10:32,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:32,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:32,703 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2024-11-22 02:10:32,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 6 proven. 1501 refuted. 0 times theorem prover too weak. 3061 trivial. 0 not checked. [2024-11-22 02:10:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667244120] [2024-11-22 02:10:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667244120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396297565] [2024-11-22 02:10:35,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:35,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:35,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:35,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:35,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:10:35,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2024-11-22 02:10:35,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:35,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-11-22 02:10:35,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-11-22 02:10:35,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-11-22 02:10:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396297565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:37,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 28 [2024-11-22 02:10:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902456348] [2024-11-22 02:10:37,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:37,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:10:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:10:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:37,096 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-22 02:10:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:37,319 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2024-11-22 02:10:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 02:10:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) Word has length 283 [2024-11-22 02:10:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:37,321 INFO L225 Difference]: With dead ends: 84 [2024-11-22 02:10:37,321 INFO L226 Difference]: Without dead ends: 77 [2024-11-22 02:10:37,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:37,323 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:37,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 631 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-22 02:10:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2024-11-22 02:10:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 12 states have call successors, (12), 5 states have call predecessors, (12), 11 states have return successors, (33), 19 states have call predecessors, (33), 12 states have call successors, (33) [2024-11-22 02:10:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 96 transitions. [2024-11-22 02:10:37,334 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 96 transitions. Word has length 283 [2024-11-22 02:10:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:37,335 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 96 transitions. [2024-11-22 02:10:37,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-22 02:10:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 96 transitions. [2024-11-22 02:10:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-22 02:10:37,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:37,337 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:37,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 02:10:37,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 02:10:37,538 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:37,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:37,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1334891743, now seen corresponding path program 10 times [2024-11-22 02:10:37,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:37,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531302432] [2024-11-22 02:10:37,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:37,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:37,568 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:37,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 869 proven. 346 refuted. 0 times theorem prover too weak. 4824 trivial. 0 not checked. [2024-11-22 02:10:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:37,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531302432] [2024-11-22 02:10:37,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531302432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:37,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875189338] [2024-11-22 02:10:37,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:37,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:37,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:37,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:37,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:10:37,948 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:37,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:37,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:37,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1091 proven. 467 refuted. 0 times theorem prover too weak. 4481 trivial. 0 not checked. [2024-11-22 02:10:38,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1091 proven. 518 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2024-11-22 02:10:40,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875189338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:40,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:40,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 21 [2024-11-22 02:10:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89587251] [2024-11-22 02:10:40,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:40,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:10:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:40,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:10:40,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:10:40,035 INFO L87 Difference]: Start difference. First operand 72 states and 96 transitions. Second operand has 21 states, 20 states have (on average 3.1) internal successors, (62), 21 states have internal predecessors, (62), 15 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-22 02:10:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:40,181 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2024-11-22 02:10:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:10:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.1) internal successors, (62), 21 states have internal predecessors, (62), 15 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) Word has length 324 [2024-11-22 02:10:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:40,183 INFO L225 Difference]: With dead ends: 91 [2024-11-22 02:10:40,183 INFO L226 Difference]: Without dead ends: 74 [2024-11-22 02:10:40,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 634 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:40,184 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:40,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-22 02:10:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2024-11-22 02:10:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 11 states have call successors, (11), 5 states have call predecessors, (11), 11 states have return successors, (28), 18 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-22 02:10:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2024-11-22 02:10:40,194 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 324 [2024-11-22 02:10:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:40,195 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2024-11-22 02:10:40,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.1) internal successors, (62), 21 states have internal predecessors, (62), 15 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (25), 11 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-22 02:10:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2024-11-22 02:10:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-22 02:10:40,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:40,197 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:40,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:40,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 02:10:40,398 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:40,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1104926743, now seen corresponding path program 11 times [2024-11-22 02:10:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872314105] [2024-11-22 02:10:40,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:40,446 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2024-11-22 02:10:40,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 754 proven. 1288 refuted. 0 times theorem prover too weak. 3997 trivial. 0 not checked. [2024-11-22 02:10:40,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872314105] [2024-11-22 02:10:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872314105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659452034] [2024-11-22 02:10:40,918 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:40,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:40,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:40,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:40,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:10:41,110 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2024-11-22 02:10:41,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:41,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:10:41,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 3351 proven. 586 refuted. 0 times theorem prover too weak. 2102 trivial. 0 not checked. [2024-11-22 02:10:41,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 800 proven. 1393 refuted. 0 times theorem prover too weak. 3846 trivial. 0 not checked. [2024-11-22 02:10:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659452034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:43,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 21] total 30 [2024-11-22 02:10:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119246955] [2024-11-22 02:10:43,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:43,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 02:10:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 02:10:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2024-11-22 02:10:43,230 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 22 states have call successors, (29), 2 states have call predecessors, (29), 12 states have return successors, (36), 15 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:10:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:43,815 INFO L93 Difference]: Finished difference Result 164 states and 264 transitions. [2024-11-22 02:10:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 02:10:43,816 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 22 states have call successors, (29), 2 states have call predecessors, (29), 12 states have return successors, (36), 15 states have call predecessors, (36), 22 states have call successors, (36) Word has length 324 [2024-11-22 02:10:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:43,817 INFO L225 Difference]: With dead ends: 164 [2024-11-22 02:10:43,817 INFO L226 Difference]: Without dead ends: 83 [2024-11-22 02:10:43,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 631 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=742, Invalid=2228, Unknown=0, NotChecked=0, Total=2970 [2024-11-22 02:10:43,820 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 134 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:43,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 156 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-22 02:10:43,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2024-11-22 02:10:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 54 states have (on average 1.037037037037037) internal successors, (56), 52 states have internal predecessors, (56), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-22 02:10:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2024-11-22 02:10:43,829 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 324 [2024-11-22 02:10:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:43,830 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2024-11-22 02:10:43,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 22 states have call successors, (29), 2 states have call predecessors, (29), 12 states have return successors, (36), 15 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:10:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2024-11-22 02:10:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-22 02:10:43,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:43,832 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:43,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 02:10:44,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 02:10:44,036 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:44,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:44,036 INFO L85 PathProgramCache]: Analyzing trace with hash 584117127, now seen corresponding path program 12 times [2024-11-22 02:10:44,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:44,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631997005] [2024-11-22 02:10:44,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:44,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:44,076 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:44,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 452 proven. 984 refuted. 0 times theorem prover too weak. 4603 trivial. 0 not checked. [2024-11-22 02:10:44,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631997005] [2024-11-22 02:10:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631997005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799025063] [2024-11-22 02:10:44,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:44,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:44,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:44,411 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:44,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:10:44,609 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:10:44,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:44,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:44,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 486 proven. 1072 refuted. 0 times theorem prover too weak. 4481 trivial. 0 not checked. [2024-11-22 02:10:44,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 492 proven. 1117 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2024-11-22 02:10:46,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799025063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:46,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:46,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 17] total 23 [2024-11-22 02:10:46,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977739253] [2024-11-22 02:10:46,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:46,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:46,371 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 16 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (25), 12 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-22 02:10:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:46,523 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2024-11-22 02:10:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:10:46,523 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 16 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (25), 12 states have call predecessors, (25), 16 states have call successors, (25) Word has length 324 [2024-11-22 02:10:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:46,524 INFO L225 Difference]: With dead ends: 92 [2024-11-22 02:10:46,524 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 02:10:46,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 635 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:10:46,525 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:46,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 02:10:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 02:10:46,526 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) [2024-11-22 02:10:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 02:10:46,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 324 [2024-11-22 02:10:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:46,526 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 02:10:46,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 16 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (25), 12 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-22 02:10:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 02:10:46,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 02:10:46,533 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 02:10:46,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:46,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:10:46,737 INFO L407 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1] [2024-11-22 02:10:46,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 02:10:48,636 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 02:10:48,662 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-22 02:10:48,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:10:48 BoogieIcfgContainer [2024-11-22 02:10:48,667 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 02:10:48,668 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 02:10:48,668 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 02:10:48,668 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 02:10:48,668 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:18" (3/4) ... [2024-11-22 02:10:48,670 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 02:10:48,673 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-11-22 02:10:48,676 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 02:10:48,676 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 02:10:48,676 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 02:10:48,676 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 02:10:48,754 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 02:10:48,755 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 02:10:48,755 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 02:10:48,755 INFO L158 Benchmark]: Toolchain (without parser) took 30718.99ms. Allocated memory was 184.5MB in the beginning and 654.3MB in the end (delta: 469.8MB). Free memory was 116.6MB in the beginning and 504.9MB in the end (delta: -388.4MB). Peak memory consumption was 81.9MB. Max. memory is 16.1GB. [2024-11-22 02:10:48,755 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 184.5MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:10:48,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.09ms. Allocated memory is still 184.5MB. Free memory was 116.3MB in the beginning and 104.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 02:10:48,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.39ms. Allocated memory is still 184.5MB. Free memory was 104.2MB in the beginning and 102.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:10:48,758 INFO L158 Benchmark]: Boogie Preprocessor took 31.63ms. Allocated memory is still 184.5MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:10:48,758 INFO L158 Benchmark]: RCFGBuilder took 371.87ms. Allocated memory is still 184.5MB. Free memory was 101.4MB in the beginning and 154.1MB in the end (delta: -52.7MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-11-22 02:10:48,758 INFO L158 Benchmark]: TraceAbstraction took 29971.60ms. Allocated memory was 184.5MB in the beginning and 654.3MB in the end (delta: 469.8MB). Free memory was 154.0MB in the beginning and 509.1MB in the end (delta: -355.1MB). Peak memory consumption was 398.6MB. Max. memory is 16.1GB. [2024-11-22 02:10:48,759 INFO L158 Benchmark]: Witness Printer took 86.79ms. Allocated memory is still 654.3MB. Free memory was 509.1MB in the beginning and 504.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 02:10:48,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 184.5MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.09ms. Allocated memory is still 184.5MB. Free memory was 116.3MB in the beginning and 104.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.39ms. Allocated memory is still 184.5MB. Free memory was 104.2MB in the beginning and 102.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.63ms. Allocated memory is still 184.5MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.87ms. Allocated memory is still 184.5MB. Free memory was 101.4MB in the beginning and 154.1MB in the end (delta: -52.7MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 29971.60ms. Allocated memory was 184.5MB in the beginning and 654.3MB in the end (delta: 469.8MB). Free memory was 154.0MB in the beginning and 509.1MB in the end (delta: -355.1MB). Peak memory consumption was 398.6MB. Max. memory is 16.1GB. * Witness Printer took 86.79ms. Allocated memory is still 654.3MB. Free memory was 509.1MB in the beginning and 504.9MB in the end (delta: 4.2MB). 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: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 29]: 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 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.0s, OverallIterations: 15, TraceHistogramMax: 55, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.1s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 468 mSDsluCounter, 1802 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1487 mSDsCounter, 437 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2056 IncrementalHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 437 mSolverCounterUnsat, 315 mSDtfsCounter, 2056 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5108 GetRequests, 4747 SyntacticMatches, 68 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=14, InterpolantAutomatonStates: 183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 26 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 4817 NumberOfCodeBlocks, 4167 NumberOfCodeBlocksAsserted, 278 NumberOfCheckSat, 7174 ConstructedInterpolants, 0 QuantifiedInterpolants, 11662 SizeOfPredicates, 50 NumberOfNonLiveVariables, 4739 ConjunctsInSsa, 309 ConjunctsInUnsatCore, 41 InterpolantComputations, 2 PerfectInterpolantSequences, 89618/110058 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 - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Ensures: (((1 < n) || (\result == 0)) || (1 == n)) RESULT: Ultimate proved your program to be correct! [2024-11-22 02:10:48,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE