./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-2.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/sum_15x0-2.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 610248c6c4c4e7168ba971ed5fa38cec025658aa482465da336c99be91c3aa5c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:11:14,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:11:14,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:11:14,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:11:14,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:11:14,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:11:14,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:11:14,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:11:14,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:11:14,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:11:14,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:11:14,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:11:14,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:11:14,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:11:14,276 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:11:14,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:11:14,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:11:14,277 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:11:14,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:11:14,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:11:14,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:11:14,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:11:14,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:11:14,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:11:14,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:11:14,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:11:14,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:11:14,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:11:14,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:11:14,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:11:14,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:11:14,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:11:14,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:11:14,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:11:14,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:11:14,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:11:14,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:11:14,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:11:14,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:11:14,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:11:14,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:11:14,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:11:14,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610248c6c4c4e7168ba971ed5fa38cec025658aa482465da336c99be91c3aa5c [2024-11-22 02:11:14,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:11:14,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:11:14,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:11:14,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:11:14,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:11:14,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2024-11-22 02:11:15,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:11:15,933 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:11:15,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2024-11-22 02:11:15,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614de64c4/de5c9ab01c1f488da134c5c1794f47f1/FLAG54afe477a [2024-11-22 02:11:16,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614de64c4/de5c9ab01c1f488da134c5c1794f47f1 [2024-11-22 02:11:16,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:11:16,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:11:16,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:11:16,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:11:16,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:11:16,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5923781c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16, skipping insertion in model container [2024-11-22 02:11:16,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:11:16,526 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/sum_15x0-2.c[481,494] [2024-11-22 02:11:16,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:11:16,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:11:16,558 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/sum_15x0-2.c[481,494] [2024-11-22 02:11:16,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:11:16,574 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:11:16,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16 WrapperNode [2024-11-22 02:11:16,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:11:16,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:11:16,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:11:16,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:11:16,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,601 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-11-22 02:11:16,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:11:16,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:11:16,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:11:16,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:11:16,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,622 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 02:11:16,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,623 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:11:16,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:11:16,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:11:16,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:11:16,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (1/1) ... [2024-11-22 02:11:16,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:11:16,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:16,657 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 02:11:16,660 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 02:11:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:11:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:11:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:11:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-22 02:11:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-22 02:11:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:11:16,751 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:11:16,754 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:11:16,836 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-22 02:11:16,837 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:11:16,845 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:11:16,846 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:11:16,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:16 BoogieIcfgContainer [2024-11-22 02:11:16,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:11:16,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:11:16,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:11:16,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:11:16,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:11:16" (1/3) ... [2024-11-22 02:11:16,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127836bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:16, skipping insertion in model container [2024-11-22 02:11:16,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:16" (2/3) ... [2024-11-22 02:11:16,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127836bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:16, skipping insertion in model container [2024-11-22 02:11:16,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:16" (3/3) ... [2024-11-22 02:11:16,867 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-2.c [2024-11-22 02:11:16,880 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:11:16,880 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:11:16,932 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:11:16,937 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;@4692c95f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:11:16,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:11:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 02:11:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:11:16,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:16,948 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:16,948 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:16,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-22 02:11:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:16,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578676616] [2024-11-22 02:11:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:11:16,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:11:17,145 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 02:11:17,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:17,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578676616] [2024-11-22 02:11:17,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578676616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:11:17,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:11:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:11:17,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215755785] [2024-11-22 02:11:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:11:17,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:11:17,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:17,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:11:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:11:17,173 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 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 02:11:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:17,217 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-22 02:11:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:11:17,219 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 02:11:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:17,225 INFO L225 Difference]: With dead ends: 25 [2024-11-22 02:11:17,225 INFO L226 Difference]: Without dead ends: 15 [2024-11-22 02:11:17,227 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 02:11:17,230 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:17,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-22 02:11:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-22 02:11:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:11:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-22 02:11:17,260 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-22 02:11:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:17,260 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-22 02:11:17,261 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 02:11:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-22 02:11:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 02:11:17,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:17,262 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:17,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:11:17,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:17,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-22 02:11:17,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:17,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691698144] [2024-11-22 02:11:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:11:17,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:11:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:11:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691698144] [2024-11-22 02:11:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691698144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635871455] [2024-11-22 02:11:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:11:17,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:17,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:17,384 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 02:11:17,386 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 02:11:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:11:17,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:11:17,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:11:17,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:11:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635871455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:17,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:17,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-22 02:11:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960056964] [2024-11-22 02:11:17,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:17,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 02:11:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 02:11:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:11:17,703 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 02:11:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:17,737 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-22 02:11:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:11:17,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2024-11-22 02:11:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:17,738 INFO L225 Difference]: With dead ends: 22 [2024-11-22 02:11:17,738 INFO L226 Difference]: Without dead ends: 18 [2024-11-22 02:11:17,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 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 02:11:17,740 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:17,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 30 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-22 02:11:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-22 02:11:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 02:11:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-22 02:11:17,744 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2024-11-22 02:11:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:17,745 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-22 02:11:17,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 02:11:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-22 02:11:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-22 02:11:17,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:17,746 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:17,753 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 02:11:17,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:17,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:17,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:17,949 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2024-11-22 02:11:17,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:17,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123260878] [2024-11-22 02:11:17,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:17,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:17,972 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:17,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:11:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123260878] [2024-11-22 02:11:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123260878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344053296] [2024-11-22 02:11:18,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:18,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:18,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:18,114 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 02:11:18,115 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 02:11:18,150 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:18,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:18,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:11:18,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:11:18,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 02:11:18,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344053296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:18,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:18,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 12 [2024-11-22 02:11:18,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049860848] [2024-11-22 02:11:18,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:18,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:11:18,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:11:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:11:18,498 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 02:11:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:18,556 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-22 02:11:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 02:11:18,557 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 22 [2024-11-22 02:11:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:18,558 INFO L225 Difference]: With dead ends: 25 [2024-11-22 02:11:18,558 INFO L226 Difference]: Without dead ends: 21 [2024-11-22 02:11:18,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:11:18,559 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:18,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-22 02:11:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-22 02:11:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:11:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-22 02:11:18,563 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2024-11-22 02:11:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:18,564 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-22 02:11:18,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 02:11:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-22 02:11:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 02:11:18,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:18,566 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:18,577 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 02:11:18,767 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,SelfDestructingSolverStorable2 [2024-11-22 02:11:18,768 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:18,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2024-11-22 02:11:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:18,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939408795] [2024-11-22 02:11:18,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:11:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:18,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 02:11:18,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:11:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939408795] [2024-11-22 02:11:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939408795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:19,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163899500] [2024-11-22 02:11:19,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:11:19,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:19,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:19,135 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 02:11:19,136 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 02:11:19,173 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 02:11:19,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:19,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:11:19,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 02:11:19,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:11:19,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163899500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:19,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:19,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 11] total 26 [2024-11-22 02:11:19,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911946997] [2024-11-22 02:11:19,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:19,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:11:19,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:11:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:11:19,717 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 26 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 22 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-22 02:11:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:19,901 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-22 02:11:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:11:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 22 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) Word has length 28 [2024-11-22 02:11:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:19,903 INFO L225 Difference]: With dead ends: 28 [2024-11-22 02:11:19,903 INFO L226 Difference]: Without dead ends: 24 [2024-11-22 02:11:19,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 02:11:19,904 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:19,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 92 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-22 02:11:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-22 02:11:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 02:11:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-22 02:11:19,912 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2024-11-22 02:11:19,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:19,913 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-22 02:11:19,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 22 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-22 02:11:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-22 02:11:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-22 02:11:19,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:19,915 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:19,921 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 02:11:20,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:20,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:20,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2024-11-22 02:11:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:20,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552048096] [2024-11-22 02:11:20,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:11:20,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:20,125 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:11:20,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-22 02:11:20,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552048096] [2024-11-22 02:11:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552048096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732983297] [2024-11-22 02:11:20,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:11:20,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:20,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:20,223 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 02:11:20,227 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 02:11:20,261 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:11:20,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:20,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:11:20,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 02:11:20,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:11:20,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732983297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:20,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:20,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 16 [2024-11-22 02:11:20,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898753435] [2024-11-22 02:11:20,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:20,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:11:20,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:20,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:11:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:11:20,888 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-22 02:11:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:20,951 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-11-22 02:11:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:11:20,951 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) Word has length 34 [2024-11-22 02:11:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:20,952 INFO L225 Difference]: With dead ends: 31 [2024-11-22 02:11:20,952 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 02:11:20,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:11:20,953 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:20,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 02:11:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-22 02:11:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:11:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-22 02:11:20,961 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2024-11-22 02:11:20,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:20,962 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-22 02:11:20,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-22 02:11:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-22 02:11:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 02:11:20,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:20,962 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:20,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 02:11:21,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:21,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:21,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2024-11-22 02:11:21,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:21,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474246887] [2024-11-22 02:11:21,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:11:21,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:21,173 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-22 02:11:21,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 02:11:21,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474246887] [2024-11-22 02:11:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474246887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571344193] [2024-11-22 02:11:21,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:11:21,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:21,289 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 02:11:21,291 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 02:11:21,345 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-22 02:11:21,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:21,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:11:21,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 02:11:21,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 02:11:22,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571344193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:22,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:22,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2024-11-22 02:11:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941648248] [2024-11-22 02:11:22,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:22,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:11:22,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:22,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:11:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:11:22,255 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-22 02:11:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:22,321 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-22 02:11:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:11:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) Word has length 40 [2024-11-22 02:11:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:22,323 INFO L225 Difference]: With dead ends: 34 [2024-11-22 02:11:22,323 INFO L226 Difference]: Without dead ends: 30 [2024-11-22 02:11:22,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:11:22,324 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:22,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-22 02:11:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-22 02:11:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:11:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-22 02:11:22,328 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2024-11-22 02:11:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:22,328 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-22 02:11:22,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-22 02:11:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-22 02:11:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-22 02:11:22,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:22,329 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:22,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 02:11:22,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:22,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:22,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2024-11-22 02:11:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669224577] [2024-11-22 02:11:22,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:11:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:22,548 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-22 02:11:22,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 02:11:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:22,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669224577] [2024-11-22 02:11:22,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669224577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:22,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099616378] [2024-11-22 02:11:22,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:11:22,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:22,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:22,685 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 02:11:22,686 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 02:11:22,737 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-22 02:11:22,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:22,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:11:22,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-22 02:11:22,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 02:11:24,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099616378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:24,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:24,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 17] total 21 [2024-11-22 02:11:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81193340] [2024-11-22 02:11:24,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:24,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:11:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:11:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:11:24,011 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 21 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 7 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-22 02:11:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:24,142 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-22 02:11:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:11:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 7 states have call predecessors, (15), 10 states have call successors, (15) Word has length 46 [2024-11-22 02:11:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:24,143 INFO L225 Difference]: With dead ends: 37 [2024-11-22 02:11:24,143 INFO L226 Difference]: Without dead ends: 33 [2024-11-22 02:11:24,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:11:24,144 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:24,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 65 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-22 02:11:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-22 02:11:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-22 02:11:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-22 02:11:24,149 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2024-11-22 02:11:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:24,149 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-22 02:11:24,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 7 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-22 02:11:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-22 02:11:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-22 02:11:24,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:24,150 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:24,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 02:11:24,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:24,352 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times [2024-11-22 02:11:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:24,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784860986] [2024-11-22 02:11:24,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:11:24,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:11:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-22 02:11:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784860986] [2024-11-22 02:11:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784860986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311934460] [2024-11-22 02:11:24,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:11:24,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:24,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:24,491 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 02:11:24,492 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 02:11:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:11:24,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:11:24,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-22 02:11:24,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 02:11:26,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311934460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:26,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:26,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 21 [2024-11-22 02:11:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226241306] [2024-11-22 02:11:26,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:26,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:11:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:11:26,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:11:26,159 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-22 02:11:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:26,242 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-22 02:11:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:11:26,243 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) Word has length 52 [2024-11-22 02:11:26,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:26,243 INFO L225 Difference]: With dead ends: 40 [2024-11-22 02:11:26,243 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 02:11:26,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 94 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:11:26,244 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:26,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 85 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 02:11:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-22 02:11:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-22 02:11:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-22 02:11:26,249 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2024-11-22 02:11:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:26,249 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-22 02:11:26,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-22 02:11:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-22 02:11:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-22 02:11:26,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:26,250 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:26,256 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 02:11:26,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:26,455 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:26,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times [2024-11-22 02:11:26,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:26,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862194589] [2024-11-22 02:11:26,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:26,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:26,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:26,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-22 02:11:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862194589] [2024-11-22 02:11:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862194589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588239671] [2024-11-22 02:11:26,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:26,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:26,609 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 02:11:26,610 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 02:11:26,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:26,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:26,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:11:26,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-22 02:11:26,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 02:11:28,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588239671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:28,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:28,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 24 [2024-11-22 02:11:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508957367] [2024-11-22 02:11:28,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:28,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 02:11:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 02:11:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:11:28,851 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 24 states have internal predecessors, (46), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-22 02:11:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:28,957 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-11-22 02:11:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:11:28,957 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 24 states have internal predecessors, (46), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) Word has length 58 [2024-11-22 02:11:28,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:28,958 INFO L225 Difference]: With dead ends: 43 [2024-11-22 02:11:28,958 INFO L226 Difference]: Without dead ends: 39 [2024-11-22 02:11:28,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:11:28,959 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 59 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:28,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 73 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-22 02:11:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-22 02:11:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-22 02:11:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-22 02:11:28,964 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2024-11-22 02:11:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:28,964 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-22 02:11:28,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 24 states have internal predecessors, (46), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-22 02:11:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-22 02:11:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-22 02:11:28,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:28,965 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:28,971 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 02:11:29,168 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,SelfDestructingSolverStorable8 [2024-11-22 02:11:29,169 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:29,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:29,169 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times [2024-11-22 02:11:29,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:29,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355600799] [2024-11-22 02:11:29,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:11:29,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:29,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:11:29,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 8 proven. 135 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-22 02:11:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355600799] [2024-11-22 02:11:29,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355600799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270009426] [2024-11-22 02:11:29,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:11:29,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:29,426 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 02:11:29,427 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 02:11:29,544 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:11:29,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:29,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:11:29,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-22 02:11:29,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 02:11:32,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270009426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:32,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:32,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 23] total 27 [2024-11-22 02:11:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720984733] [2024-11-22 02:11:32,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:32,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:11:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:11:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:11:32,285 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 27 states, 24 states have (on average 2.125) internal successors, (51), 27 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (21), 10 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-22 02:11:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:32,455 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-22 02:11:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:11:32,456 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.125) internal successors, (51), 27 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (21), 10 states have call predecessors, (21), 13 states have call successors, (21) Word has length 64 [2024-11-22 02:11:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:32,457 INFO L225 Difference]: With dead ends: 46 [2024-11-22 02:11:32,457 INFO L226 Difference]: Without dead ends: 42 [2024-11-22 02:11:32,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 113 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:11:32,458 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:32,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 99 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-22 02:11:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-22 02:11:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-22 02:11:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-22 02:11:32,468 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2024-11-22 02:11:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:32,468 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-22 02:11:32,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.125) internal successors, (51), 27 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (21), 10 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-22 02:11:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-22 02:11:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-22 02:11:32,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:32,470 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:32,479 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 02:11:32,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:11:32,675 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:32,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times [2024-11-22 02:11:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:32,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426480966] [2024-11-22 02:11:32,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:11:32,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:32,687 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:11:32,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-22 02:11:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426480966] [2024-11-22 02:11:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426480966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301448261] [2024-11-22 02:11:32,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:11:32,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:32,872 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 02:11:32,874 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 02:11:33,037 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:11:33,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:33,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 02:11:33,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-22 02:11:33,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 02:11:36,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301448261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:36,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:36,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 25] total 28 [2024-11-22 02:11:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45592555] [2024-11-22 02:11:36,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:36,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:11:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:36,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:11:36,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:11:36,833 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 28 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-22 02:11:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:36,982 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-11-22 02:11:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:11:36,982 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 28 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) Word has length 70 [2024-11-22 02:11:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:36,983 INFO L225 Difference]: With dead ends: 49 [2024-11-22 02:11:36,983 INFO L226 Difference]: Without dead ends: 45 [2024-11-22 02:11:36,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:11:36,984 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 119 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:36,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 96 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-22 02:11:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-22 02:11:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 02:11:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-22 02:11:36,993 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2024-11-22 02:11:36,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:36,993 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-22 02:11:36,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 28 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-22 02:11:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-22 02:11:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 02:11:36,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:36,994 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:37,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 02:11:37,195 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,SelfDestructingSolverStorable10 [2024-11-22 02:11:37,195 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:37,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:37,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 11 times [2024-11-22 02:11:37,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:37,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439102363] [2024-11-22 02:11:37,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:11:37,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:37,220 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-22 02:11:37,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-22 02:11:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439102363] [2024-11-22 02:11:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439102363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172843914] [2024-11-22 02:11:37,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:11:37,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:37,406 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 02:11:37,407 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 02:11:37,598 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-22 02:11:37,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:37,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 02:11:37,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-22 02:11:37,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 02:11:42,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172843914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:42,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:42,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 29 [2024-11-22 02:11:42,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301317883] [2024-11-22 02:11:42,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:42,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:11:42,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:42,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:11:42,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:11:42,363 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 29 states, 27 states have (on average 2.074074074074074) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-22 02:11:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:42,486 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-11-22 02:11:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:11:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.074074074074074) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) Word has length 76 [2024-11-22 02:11:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:42,487 INFO L225 Difference]: With dead ends: 52 [2024-11-22 02:11:42,487 INFO L226 Difference]: Without dead ends: 48 [2024-11-22 02:11:42,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 138 SyntacticMatches, 12 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=1062, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:11:42,488 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:42,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 102 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:11:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-22 02:11:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-22 02:11:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 02:11:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-22 02:11:42,492 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76 [2024-11-22 02:11:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:42,493 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-22 02:11:42,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.074074074074074) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-22 02:11:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-22 02:11:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-22 02:11:42,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:42,494 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:42,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 02:11:42,694 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,SelfDestructingSolverStorable11 [2024-11-22 02:11:42,694 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:42,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 12 times [2024-11-22 02:11:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:42,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121802785] [2024-11-22 02:11:42,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:11:42,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:42,716 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:11:42,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 11 proven. 234 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-22 02:11:42,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121802785] [2024-11-22 02:11:42,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121802785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773442974] [2024-11-22 02:11:42,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:11:42,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:42,956 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 02:11:42,957 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 02:11:43,214 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:11:43,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:43,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 02:11:43,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-22 02:11:43,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-22 02:11:49,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773442974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:49,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:49,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 29] total 33 [2024-11-22 02:11:49,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439264866] [2024-11-22 02:11:49,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:49,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 02:11:49,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:49,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 02:11:49,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 02:11:49,188 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 33 states, 30 states have (on average 2.1) internal successors, (63), 33 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-22 02:11:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:49,472 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-11-22 02:11:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:11:49,476 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.1) internal successors, (63), 33 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) Word has length 82 [2024-11-22 02:11:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:49,477 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:11:49,479 INFO L226 Difference]: Without dead ends: 51 [2024-11-22 02:11:49,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 146 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=693, Invalid=1469, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 02:11:49,480 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 123 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:49,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 106 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-22 02:11:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-22 02:11:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 02:11:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-11-22 02:11:49,488 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82 [2024-11-22 02:11:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:49,489 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-11-22 02:11:49,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.1) internal successors, (63), 33 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-22 02:11:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-11-22 02:11:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-22 02:11:49,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:49,490 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:49,498 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 02:11:49,690 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,SelfDestructingSolverStorable12 [2024-11-22 02:11:49,690 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:49,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 13 times [2024-11-22 02:11:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524255976] [2024-11-22 02:11:49,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:11:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:11:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-22 02:11:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524255976] [2024-11-22 02:11:49,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524255976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573138408] [2024-11-22 02:11:49,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:11:49,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:49,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:49,928 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 02:11:49,930 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 02:11:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:11:50,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 02:11:50,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-22 02:11:50,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-22 02:11:57,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573138408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:57,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:57,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 33 [2024-11-22 02:11:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251086135] [2024-11-22 02:11:57,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:57,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 02:11:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:57,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 02:11:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 02:11:57,887 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 33 states, 31 states have (on average 2.064516129032258) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-22 02:11:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:58,046 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-11-22 02:11:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:11:58,046 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.064516129032258) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) Word has length 88 [2024-11-22 02:11:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:58,047 INFO L225 Difference]: With dead ends: 58 [2024-11-22 02:11:58,047 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 02:11:58,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 160 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=664, Invalid=1406, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 02:11:58,048 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:58,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 110 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 02:11:58,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-22 02:11:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 02:11:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-22 02:11:58,052 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88 [2024-11-22 02:11:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:58,053 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-22 02:11:58,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.064516129032258) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-22 02:11:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-22 02:11:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-22 02:11:58,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:58,054 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:58,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 02:11:58,256 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,SelfDestructingSolverStorable13 [2024-11-22 02:11:58,257 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:58,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:58,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1321174388, now seen corresponding path program 14 times [2024-11-22 02:11:58,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:58,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932343157] [2024-11-22 02:11:58,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:58,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:58,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:58,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 14 proven. 301 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-22 02:11:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932343157] [2024-11-22 02:11:58,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932343157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:58,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110258197] [2024-11-22 02:11:58,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:58,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:58,542 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:11:58,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:11:58,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:58,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:58,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 02:11:58,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-22 02:11:59,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:12:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-22 02:12:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110258197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:12:08,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:12:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 33] total 35 [2024-11-22 02:12:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972984444] [2024-11-22 02:12:08,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:12:08,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 02:12:08,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:12:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 02:12:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:12:08,419 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 35 states have internal predecessors, (69), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2024-11-22 02:12:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:12:08,592 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-22 02:12:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 02:12:08,592 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 35 states have internal predecessors, (69), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) Word has length 94 [2024-11-22 02:12:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:12:08,593 INFO L225 Difference]: With dead ends: 61 [2024-11-22 02:12:08,593 INFO L226 Difference]: Without dead ends: 57 [2024-11-22 02:12:08,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 170 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=785, Invalid=1567, Unknown=0, NotChecked=0, Total=2352 [2024-11-22 02:12:08,598 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:12:08,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 120 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:12:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-22 02:12:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-22 02:12:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 02:12:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-22 02:12:08,607 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94 [2024-11-22 02:12:08,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:12:08,607 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-22 02:12:08,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 35 states have internal predecessors, (69), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2024-11-22 02:12:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-22 02:12:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-22 02:12:08,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:12:08,608 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:12:08,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 02:12:08,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:12:08,809 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:12:08,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:12:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 15 times [2024-11-22 02:12:08,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:12:08,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109848065] [2024-11-22 02:12:08,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:12:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:12:08,837 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-22 02:12:08,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 02:12:08,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 02:12:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 02:12:08,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 02:12:08,887 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 02:12:08,888 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 02:12:08,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 02:12:08,891 INFO L407 BasicCegarLoop]: Path program histogram: [15, 1] [2024-11-22 02:12:08,930 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 02:12:08,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:12:08 BoogieIcfgContainer [2024-11-22 02:12:08,934 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 02:12:08,935 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 02:12:08,935 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 02:12:08,935 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 02:12:08,935 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:16" (3/4) ... [2024-11-22 02:12:08,936 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-22 02:12:08,981 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 02:12:08,981 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 02:12:08,982 INFO L158 Benchmark]: Toolchain (without parser) took 52633.25ms. Allocated memory was 146.8MB in the beginning and 539.0MB in the end (delta: 392.2MB). Free memory was 90.1MB in the beginning and 317.4MB in the end (delta: -227.3MB). Peak memory consumption was 166.9MB. Max. memory is 16.1GB. [2024-11-22 02:12:08,982 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:12:08,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.00ms. Allocated memory is still 146.8MB. Free memory was 90.1MB in the beginning and 78.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 02:12:08,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.86ms. Allocated memory is still 146.8MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:12:08,983 INFO L158 Benchmark]: Boogie Preprocessor took 24.34ms. Allocated memory is still 146.8MB. Free memory was 76.7MB in the beginning and 75.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:12:08,983 INFO L158 Benchmark]: RCFGBuilder took 218.96ms. Allocated memory is still 146.8MB. Free memory was 75.0MB in the beginning and 65.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-22 02:12:08,984 INFO L158 Benchmark]: TraceAbstraction took 52073.91ms. Allocated memory was 146.8MB in the beginning and 539.0MB in the end (delta: 392.2MB). Free memory was 117.7MB in the beginning and 320.5MB in the end (delta: -202.9MB). Peak memory consumption was 188.3MB. Max. memory is 16.1GB. [2024-11-22 02:12:08,984 INFO L158 Benchmark]: Witness Printer took 47.05ms. Allocated memory is still 539.0MB. Free memory was 320.5MB in the beginning and 317.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 02:12:08,985 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.00ms. Allocated memory is still 146.8MB. Free memory was 90.1MB in the beginning and 78.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.86ms. Allocated memory is still 146.8MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.34ms. Allocated memory is still 146.8MB. Free memory was 76.7MB in the beginning and 75.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 218.96ms. Allocated memory is still 146.8MB. Free memory was 75.0MB in the beginning and 65.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 52073.91ms. Allocated memory was 146.8MB in the beginning and 539.0MB in the end (delta: 392.2MB). Free memory was 117.7MB in the beginning and 320.5MB in the end (delta: -202.9MB). Peak memory consumption was 188.3MB. Max. memory is 16.1GB. * Witness Printer took 47.05ms. Allocated memory is still 539.0MB. Free memory was 320.5MB in the beginning and 317.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int a = 15; [L15] int b = 0; VAL [a=15, b=0] [L16] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=15] [L6] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=15, m=0, n=15] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=14] [L6] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=14, m=1, n=14] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=13] [L6] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=13, m=2, n=13] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=12] [L6] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=12, m=3, n=12] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=11] [L6] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=11, m=4, n=11] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=10] [L6] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=10, m=5, n=10] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=9] [L6] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=9, m=6, n=9] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=8] [L6] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=8, m=7, n=8] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=7] [L6] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=7, m=8, n=7] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=6] [L6] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=6, m=9, n=6] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=5] [L6] COND FALSE !(n <= 0) VAL [\old(m)=10, \old(n)=5, m=10, n=5] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=4] [L6] COND FALSE !(n <= 0) VAL [\old(m)=11, \old(n)=4, m=11, n=4] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=3] [L6] COND FALSE !(n <= 0) VAL [\old(m)=12, \old(n)=3, m=12, n=3] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=2] [L6] COND FALSE !(n <= 0) VAL [\old(m)=13, \old(n)=2, m=13, n=2] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=1] [L6] COND FALSE !(n <= 0) VAL [\old(m)=14, \old(n)=1, m=14, n=1] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=0] [L6] COND TRUE n <= 0 [L7] return m + n; VAL [\old(m)=15, \old(n)=0, \result=15] [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=1, m=14, n=1] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=2, m=13, n=2] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=3, m=12, n=3] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=4, m=11, n=4] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=5, m=10, n=5] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=6, m=9, n=6] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=7, m=8, n=7] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=8, m=7, n=8] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=9, m=6, n=9] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=10, m=5, n=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=11, m=4, n=11] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=12, m=3, n=12] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=13, m=2, n=13] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=14, m=1, n=14] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=15, m=0, n=15] [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) VAL [a=15, b=0] [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.0s, OverallIterations: 16, TraceHistogramMax: 16, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 782 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 670 mSDsluCounter, 1172 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1021 mSDsCounter, 283 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1098 IncrementalHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 283 mSolverCounterUnsat, 151 mSDtfsCounter, 1098 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1921 GetRequests, 1373 SyntacticMatches, 126 SemanticMatches, 422 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3924 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=15, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 44.6s InterpolantComputationTime, 1650 NumberOfCodeBlocks, 1650 NumberOfCodeBlocksAsserted, 147 NumberOfCheckSat, 2277 ConstructedInterpolants, 0 QuantifiedInterpolants, 6825 SizeOfPredicates, 105 NumberOfNonLiveVariables, 2562 ConjunctsInSsa, 266 ConjunctsInUnsatCore, 43 InterpolantComputations, 1 PerfectInterpolantSequences, 3653/9450 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-22 02:12:09,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE