./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.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/nla-digbench-scaling/prodbin-ll_unwindbound5.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 fe22a831ab045bcc67da4505e3ba36b6f549cf1239b349bc9f8fd22458d7fbac --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:37:25,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:37:25,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:37:25,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:37:25,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:37:25,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:37:25,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:37:25,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:37:25,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:37:25,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:37:25,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:37:25,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:37:25,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:37:25,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:37:25,511 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:37:25,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:37:25,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:37:25,511 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:37:25,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:37:25,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:37:25,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:37:25,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:37:25,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:37:25,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:37:25,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:37:25,515 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:37:25,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:37:25,515 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:37:25,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:37:25,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:37:25,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:37:25,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:37:25,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:37:25,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:37:25,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:37:25,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:37:25,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:37:25,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:37:25,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:37:25,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:37:25,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:37:25,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:37:25,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe22a831ab045bcc67da4505e3ba36b6f549cf1239b349bc9f8fd22458d7fbac [2024-11-22 01:37:25,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:37:25,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:37:25,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:37:25,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:37:25,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:37:25,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c [2024-11-22 01:37:26,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:37:27,111 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:37:27,111 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c [2024-11-22 01:37:27,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a9e206d/ca49f125c1b6454195caef43b3f44296/FLAGea4345b2b [2024-11-22 01:37:27,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a9e206d/ca49f125c1b6454195caef43b3f44296 [2024-11-22 01:37:27,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:37:27,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:37:27,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:37:27,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:37:27,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:37:27,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582893ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27, skipping insertion in model container [2024-11-22 01:37:27,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:37:27,306 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/nla-digbench-scaling/prodbin-ll_unwindbound5.c[1175,1188] [2024-11-22 01:37:27,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:37:27,323 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:37:27,332 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/nla-digbench-scaling/prodbin-ll_unwindbound5.c[1175,1188] [2024-11-22 01:37:27,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:37:27,348 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:37:27,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27 WrapperNode [2024-11-22 01:37:27,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:37:27,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:37:27,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:37:27,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:37:27,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,382 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-22 01:37:27,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:37:27,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:37:27,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:37:27,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:37:27,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,407 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 01:37:27,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:37:27,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:37:27,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:37:27,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:37:27,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (1/1) ... [2024-11-22 01:37:27,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:37:27,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:27,443 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 01:37:27,444 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 01:37:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:37:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:37:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:37:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:37:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 01:37:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 01:37:27,528 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:37:27,530 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:37:27,627 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-22 01:37:27,627 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:37:27,638 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:37:27,641 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:37:27,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:27 BoogieIcfgContainer [2024-11-22 01:37:27,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:37:27,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:37:27,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:37:27,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:37:27,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:37:27" (1/3) ... [2024-11-22 01:37:27,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dacd396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:27, skipping insertion in model container [2024-11-22 01:37:27,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:27" (2/3) ... [2024-11-22 01:37:27,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dacd396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:27, skipping insertion in model container [2024-11-22 01:37:27,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:27" (3/3) ... [2024-11-22 01:37:27,652 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound5.c [2024-11-22 01:37:27,665 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:37:27,666 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:37:27,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:37:27,713 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;@16da4119, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:37:27,714 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:37:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 01:37:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 01:37:27,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:27,722 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:27,723 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:27,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -572597424, now seen corresponding path program 1 times [2024-11-22 01:37:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:27,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607654805] [2024-11-22 01:37:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:27,863 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 01:37:27,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607654805] [2024-11-22 01:37:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607654805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:37:27,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:37:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 01:37:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316253260] [2024-11-22 01:37:27,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:37:27,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:37:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:37:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:37:27,897 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:37:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:27,912 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2024-11-22 01:37:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:37:27,914 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-22 01:37:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:27,920 INFO L225 Difference]: With dead ends: 39 [2024-11-22 01:37:27,920 INFO L226 Difference]: Without dead ends: 17 [2024-11-22 01:37:27,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:37:27,927 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:27,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:37:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-22 01:37:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-22 01:37:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:37:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-22 01:37:27,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2024-11-22 01:37:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:27,956 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-22 01:37:27,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:37:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-22 01:37:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 01:37:27,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:27,961 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:27,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:37:27,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:27,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:27,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1986366499, now seen corresponding path program 1 times [2024-11-22 01:37:27,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:27,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756497340] [2024-11-22 01:37:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:27,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:28,044 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 01:37:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756497340] [2024-11-22 01:37:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756497340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:37:28,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:37:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:37:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222388029] [2024-11-22 01:37:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:37:28,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:37:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:37:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:37:28,048 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:37:28,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:28,062 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-22 01:37:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:37:28,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 01:37:28,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:28,063 INFO L225 Difference]: With dead ends: 26 [2024-11-22 01:37:28,063 INFO L226 Difference]: Without dead ends: 19 [2024-11-22 01:37:28,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:37:28,065 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:28,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:37:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-22 01:37:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-22 01:37:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:37:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-22 01:37:28,069 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2024-11-22 01:37:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:28,069 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-22 01:37:28,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:37:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-22 01:37:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 01:37:28,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:28,070 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:28,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:37:28,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:28,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1984579039, now seen corresponding path program 1 times [2024-11-22 01:37:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:28,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740120016] [2024-11-22 01:37:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:37:28,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189162167] [2024-11-22 01:37:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:28,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:28,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:28,101 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 01:37:28,102 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 01:37:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:28,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:37:28,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:28,295 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 01:37:28,295 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:37:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740120016] [2024-11-22 01:37:28,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:37:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189162167] [2024-11-22 01:37:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189162167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:37:28,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:37:28,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:37:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735734146] [2024-11-22 01:37:28,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:37:28,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:37:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:28,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:37:28,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:37:28,297 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:37:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:28,339 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-22 01:37:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:37:28,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-22 01:37:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:28,340 INFO L225 Difference]: With dead ends: 29 [2024-11-22 01:37:28,340 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 01:37:28,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:37:28,341 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:28,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:37:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 01:37:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2024-11-22 01:37:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:37:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-22 01:37:28,352 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2024-11-22 01:37:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:28,352 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-22 01:37:28,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:37:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-22 01:37:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 01:37:28,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:28,354 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:28,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 01:37:28,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:28,555 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:28,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash 845350648, now seen corresponding path program 1 times [2024-11-22 01:37:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:28,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520868082] [2024-11-22 01:37:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:28,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:28,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520868082] [2024-11-22 01:37:28,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520868082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:37:28,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:37:28,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:37:28,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056516667] [2024-11-22 01:37:28,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:37:28,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:37:28,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:28,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:37:28,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:37:28,687 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:37:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:28,720 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-22 01:37:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:37:28,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-22 01:37:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:28,721 INFO L225 Difference]: With dead ends: 34 [2024-11-22 01:37:28,722 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 01:37:28,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:37:28,723 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:28,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:37:28,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 01:37:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-22 01:37:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:37:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-22 01:37:28,729 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2024-11-22 01:37:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:28,729 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-22 01:37:28,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:37:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-22 01:37:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 01:37:28,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:28,730 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:28,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 01:37:28,730 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:28,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 905454657, now seen corresponding path program 1 times [2024-11-22 01:37:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:28,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045991178] [2024-11-22 01:37:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:28,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:28,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045991178] [2024-11-22 01:37:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045991178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:37:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170650048] [2024-11-22 01:37:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:28,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:28,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:28,840 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 01:37:28,843 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 01:37:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:28,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:37:28,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:28,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:28,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170650048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:37:28,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:37:28,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-22 01:37:28,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028567398] [2024-11-22 01:37:28,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:37:28,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:37:28,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:37:28,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:37:28,984 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 01:37:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:29,049 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-22 01:37:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:37:29,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-11-22 01:37:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:29,050 INFO L225 Difference]: With dead ends: 62 [2024-11-22 01:37:29,050 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 01:37:29,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:37:29,051 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:29,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 78 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:37:29,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 01:37:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2024-11-22 01:37:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 01:37:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-11-22 01:37:29,064 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 20 [2024-11-22 01:37:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:29,064 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-11-22 01:37:29,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 01:37:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-11-22 01:37:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 01:37:29,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:29,065 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:29,073 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 01:37:29,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:29,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:29,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash 907242117, now seen corresponding path program 1 times [2024-11-22 01:37:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:29,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707709467] [2024-11-22 01:37:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:37:29,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269379360] [2024-11-22 01:37:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:29,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:29,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:29,298 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 01:37:29,299 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 01:37:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:29,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 01:37:29,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:29,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:30,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:30,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707709467] [2024-11-22 01:37:30,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:37:30,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269379360] [2024-11-22 01:37:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269379360] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 01:37:30,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:37:30,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-22 01:37:30,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040094001] [2024-11-22 01:37:30,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:37:30,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:37:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:37:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:37:30,950 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:37:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:31,064 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2024-11-22 01:37:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:37:31,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 01:37:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:31,065 INFO L225 Difference]: With dead ends: 90 [2024-11-22 01:37:31,065 INFO L226 Difference]: Without dead ends: 88 [2024-11-22 01:37:31,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:37:31,066 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:31,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:37:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-22 01:37:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2024-11-22 01:37:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 69 states have internal predecessors, (84), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 01:37:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2024-11-22 01:37:31,083 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 20 [2024-11-22 01:37:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:31,083 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2024-11-22 01:37:31,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:37:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2024-11-22 01:37:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 01:37:31,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:31,085 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:31,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:37:31,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:31,289 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:31,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash 97895491, now seen corresponding path program 1 times [2024-11-22 01:37:31,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:31,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386437838] [2024-11-22 01:37:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:31,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:37:31,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544452744] [2024-11-22 01:37:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:31,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:31,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:31,303 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 01:37:31,304 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 01:37:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:31,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 01:37:31,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:31,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386437838] [2024-11-22 01:37:31,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:37:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544452744] [2024-11-22 01:37:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544452744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:37:31,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:37:31,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2024-11-22 01:37:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779186066] [2024-11-22 01:37:31,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:37:31,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 01:37:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 01:37:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:37:31,866 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:37:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:32,132 INFO L93 Difference]: Finished difference Result 127 states and 153 transitions. [2024-11-22 01:37:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 01:37:32,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-22 01:37:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:32,133 INFO L225 Difference]: With dead ends: 127 [2024-11-22 01:37:32,134 INFO L226 Difference]: Without dead ends: 118 [2024-11-22 01:37:32,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-22 01:37:32,134 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:32,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 112 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:37:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-22 01:37:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2024-11-22 01:37:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 82 states have internal predecessors, (97), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-22 01:37:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2024-11-22 01:37:32,146 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 20 [2024-11-22 01:37:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:32,146 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2024-11-22 01:37:32,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 01:37:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2024-11-22 01:37:32,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-22 01:37:32,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:32,147 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:32,154 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 01:37:32,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:32,348 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:32,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1470880860, now seen corresponding path program 1 times [2024-11-22 01:37:32,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:32,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900693445] [2024-11-22 01:37:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:32,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:37:32,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545080229] [2024-11-22 01:37:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:32,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:32,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:32,372 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 01:37:32,374 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 01:37:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:32,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 01:37:32,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:37:32,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:37:32,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900693445] [2024-11-22 01:37:32,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:37:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545080229] [2024-11-22 01:37:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545080229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:37:32,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:37:32,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-11-22 01:37:32,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903178244] [2024-11-22 01:37:32,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:37:32,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 01:37:32,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 01:37:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:37:32,514 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 01:37:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:32,595 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2024-11-22 01:37:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:37:32,595 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2024-11-22 01:37:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:32,597 INFO L225 Difference]: With dead ends: 114 [2024-11-22 01:37:32,597 INFO L226 Difference]: Without dead ends: 99 [2024-11-22 01:37:32,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:37:32,598 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:32,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 76 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:37:32,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-22 01:37:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2024-11-22 01:37:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 77 states have (on average 1.155844155844156) internal successors, (89), 79 states have internal predecessors, (89), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-22 01:37:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2024-11-22 01:37:32,619 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 26 [2024-11-22 01:37:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:32,619 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2024-11-22 01:37:32,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 01:37:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2024-11-22 01:37:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 01:37:32,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:32,620 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:32,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:37:32,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:32,825 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:32,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 103630759, now seen corresponding path program 1 times [2024-11-22 01:37:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:32,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022997382] [2024-11-22 01:37:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:37:32,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811345056] [2024-11-22 01:37:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:37:32,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:32,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:32,850 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 01:37:32,851 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 01:37:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:37:32,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 01:37:32,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:37:33,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:37:34,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022997382] [2024-11-22 01:37:34,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:37:34,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811345056] [2024-11-22 01:37:34,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811345056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:37:34,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:37:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-22 01:37:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994796829] [2024-11-22 01:37:34,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:37:34,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 01:37:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 01:37:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-22 01:37:34,879 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 01:37:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:37,110 INFO L93 Difference]: Finished difference Result 139 states and 159 transitions. [2024-11-22 01:37:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 01:37:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 30 [2024-11-22 01:37:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:37,111 INFO L225 Difference]: With dead ends: 139 [2024-11-22 01:37:37,112 INFO L226 Difference]: Without dead ends: 137 [2024-11-22 01:37:37,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2024-11-22 01:37:37,113 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:37,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 130 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 01:37:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-22 01:37:37,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2024-11-22 01:37:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 109 states have (on average 1.165137614678899) internal successors, (127), 110 states have internal predecessors, (127), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-22 01:37:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2024-11-22 01:37:37,136 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 30 [2024-11-22 01:37:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:37,137 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2024-11-22 01:37:37,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 01:37:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2024-11-22 01:37:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 01:37:37,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:37,140 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:37,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 01:37:37,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:37,345 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:37,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash -667620151, now seen corresponding path program 2 times [2024-11-22 01:37:37,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:37,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888766501] [2024-11-22 01:37:37,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:37:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:37,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:37:37,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:37:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123937516] [2024-11-22 01:37:37,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:37:37,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:37,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:37,383 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 01:37:37,385 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 01:37:37,427 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:37:37,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:37:37,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-22 01:37:37,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 01:37:38,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:37:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888766501] [2024-11-22 01:37:39,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:37:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123937516] [2024-11-22 01:37:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123937516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:37:39,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:37:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2024-11-22 01:37:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665734070] [2024-11-22 01:37:39,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:37:39,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 01:37:39,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 01:37:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-22 01:37:39,464 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 01:37:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:40,817 INFO L93 Difference]: Finished difference Result 181 states and 214 transitions. [2024-11-22 01:37:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 01:37:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 40 [2024-11-22 01:37:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:40,821 INFO L225 Difference]: With dead ends: 181 [2024-11-22 01:37:40,822 INFO L226 Difference]: Without dead ends: 179 [2024-11-22 01:37:40,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2024-11-22 01:37:40,823 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:40,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 257 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 01:37:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-22 01:37:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 162. [2024-11-22 01:37:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 01:37:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2024-11-22 01:37:40,842 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 40 [2024-11-22 01:37:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:40,842 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2024-11-22 01:37:40,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 01:37:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2024-11-22 01:37:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-22 01:37:40,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:40,843 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:40,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 01:37:41,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:41,048 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:41,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:41,051 INFO L85 PathProgramCache]: Analyzing trace with hash -957536403, now seen corresponding path program 2 times [2024-11-22 01:37:41,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:41,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272763161] [2024-11-22 01:37:41,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:37:41,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:41,069 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:37:41,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:37:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:37:41,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272763161] [2024-11-22 01:37:41,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272763161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:37:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419466739] [2024-11-22 01:37:41,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:37:41,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:41,254 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 01:37:41,255 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 01:37:41,300 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:37:41,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:37:41,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:37:41,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:37:41,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:37:41,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419466739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:37:41,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:37:41,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 9 [2024-11-22 01:37:41,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952924522] [2024-11-22 01:37:41,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:37:41,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 01:37:41,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:41,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 01:37:41,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:37:41,412 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-22 01:37:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:41,480 INFO L93 Difference]: Finished difference Result 218 states and 258 transitions. [2024-11-22 01:37:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 01:37:41,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2024-11-22 01:37:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:41,483 INFO L225 Difference]: With dead ends: 218 [2024-11-22 01:37:41,483 INFO L226 Difference]: Without dead ends: 211 [2024-11-22 01:37:41,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 94 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:37:41,484 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:41,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 97 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:37:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-22 01:37:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-11-22 01:37:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 173 states have (on average 1.1618497109826589) internal successors, (201), 175 states have internal predecessors, (201), 22 states have call successors, (22), 15 states have call predecessors, (22), 15 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 01:37:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2024-11-22 01:37:41,504 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 50 [2024-11-22 01:37:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:41,504 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2024-11-22 01:37:41,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-22 01:37:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2024-11-22 01:37:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-22 01:37:41,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:41,507 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:41,516 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 01:37:41,707 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,SelfDestructingSolverStorable10 [2024-11-22 01:37:41,708 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:41,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash 535727021, now seen corresponding path program 3 times [2024-11-22 01:37:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:41,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719273172] [2024-11-22 01:37:41,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:37:41,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:41,746 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 01:37:41,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:37:41,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039759744] [2024-11-22 01:37:41,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:37:41,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:41,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:41,749 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 01:37:41,749 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 01:37:41,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 01:37:41,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:37:41,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 01:37:41,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:37:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 01:37:44,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:37:45,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:37:45,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719273172] [2024-11-22 01:37:45,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:37:45,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039759744] [2024-11-22 01:37:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039759744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:37:45,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:37:45,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-22 01:37:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454446137] [2024-11-22 01:37:45,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 01:37:45,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 01:37:45,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:37:45,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 01:37:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-11-22 01:37:45,465 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 01:37:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:37:47,168 INFO L93 Difference]: Finished difference Result 282 states and 331 transitions. [2024-11-22 01:37:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 01:37:47,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2024-11-22 01:37:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:37:47,172 INFO L225 Difference]: With dead ends: 282 [2024-11-22 01:37:47,172 INFO L226 Difference]: Without dead ends: 280 [2024-11-22 01:37:47,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2024-11-22 01:37:47,173 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:37:47,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 192 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 01:37:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-22 01:37:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 211. [2024-11-22 01:37:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 171 states have (on average 1.1637426900584795) internal successors, (199), 175 states have internal predecessors, (199), 23 states have call successors, (23), 16 states have call predecessors, (23), 16 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-22 01:37:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2024-11-22 01:37:47,202 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 50 [2024-11-22 01:37:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:37:47,203 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2024-11-22 01:37:47,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 01:37:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2024-11-22 01:37:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 01:37:47,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:37:47,204 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:47,211 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 01:37:47,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:47,404 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:37:47,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:37:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash 510370769, now seen corresponding path program 3 times [2024-11-22 01:37:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:37:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346083688] [2024-11-22 01:37:47,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:37:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:37:47,453 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 01:37:47,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:37:47,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749379196] [2024-11-22 01:37:47,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:37:47,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:37:47,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:37:47,459 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 01:37:47,460 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 01:37:47,512 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 01:37:47,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 01:37:47,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 01:37:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 01:37:47,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 01:37:47,562 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 01:37:47,563 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:37:47,570 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 01:37:47,764 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,SelfDestructingSolverStorable12 [2024-11-22 01:37:47,767 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:37:47,805 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:37:47,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:37:47 BoogieIcfgContainer [2024-11-22 01:37:47,808 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:37:47,808 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:37:47,808 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:37:47,808 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:37:47,808 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:27" (3/4) ... [2024-11-22 01:37:47,809 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-22 01:37:47,865 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:37:47,870 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:37:47,871 INFO L158 Benchmark]: Toolchain (without parser) took 20739.86ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 140.4MB in the beginning and 174.0MB in the end (delta: -33.6MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. [2024-11-22 01:37:47,871 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 89.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:37:47,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.53ms. Allocated memory is still 172.0MB. Free memory was 140.2MB in the beginning and 131.5MB in the end (delta: 8.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-11-22 01:37:47,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.01ms. Allocated memory is still 172.0MB. Free memory was 131.5MB in the beginning and 129.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:37:47,871 INFO L158 Benchmark]: Boogie Preprocessor took 32.85ms. Allocated memory is still 172.0MB. Free memory was 129.9MB in the beginning and 128.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:37:47,871 INFO L158 Benchmark]: RCFGBuilder took 225.25ms. Allocated memory is still 172.0MB. Free memory was 128.0MB in the beginning and 116.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 01:37:47,872 INFO L158 Benchmark]: TraceAbstraction took 20163.31ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 116.9MB in the beginning and 57.8MB in the end (delta: 59.1MB). Peak memory consumption was 94.7MB. Max. memory is 16.1GB. [2024-11-22 01:37:47,872 INFO L158 Benchmark]: Witness Printer took 62.29ms. Allocated memory is still 207.6MB. Free memory was 57.8MB in the beginning and 174.0MB in the end (delta: -116.2MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2024-11-22 01:37:47,873 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 89.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.53ms. Allocated memory is still 172.0MB. Free memory was 140.2MB in the beginning and 131.5MB in the end (delta: 8.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.01ms. Allocated memory is still 172.0MB. Free memory was 131.5MB in the beginning and 129.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.85ms. Allocated memory is still 172.0MB. Free memory was 129.9MB in the beginning and 128.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 225.25ms. Allocated memory is still 172.0MB. Free memory was 128.0MB in the beginning and 116.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20163.31ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 116.9MB in the beginning and 57.8MB in the end (delta: 59.1MB). Peak memory consumption was 94.7MB. Max. memory is 16.1GB. * Witness Printer took 62.29ms. Allocated memory is still 207.6MB. Free memory was 57.8MB in the beginning and 174.0MB in the end (delta: -116.2MB). Peak memory consumption was 4.3MB. 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: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L28] int counter = 0; VAL [counter=0] [L30] int a, b; [L31] long long x, y, z; [L33] a = __VERIFIER_nondet_int() [L34] b = __VERIFIER_nondet_int() [L35] CALL assume_abort_if_not(b >= 1) [L18] COND FALSE !(!cond) VAL [counter=0] [L35] RET assume_abort_if_not(b >= 1) [L37] x = a [L38] y = b [L39] z = 0 VAL [a=-1, b=127, counter=0, x=-1, y=127, z=0] [L41] EXPR counter++ VAL [a=-1, b=127, counter=1, x=-1, y=127, z=0] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=1] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-1, b=127, counter=1, x=-1, y=127, z=0] [L43] COND FALSE !(!(y != 0)) VAL [a=-1, b=127, counter=1, x=-1, y=127, z=0] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-1, b=127, counter=1, x=-1, y=126, z=-1] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-1, b=127, counter=1, x=-2, y=63, z=-1] [L41] EXPR counter++ VAL [a=-1, b=127, counter=2, x=-2, y=63, z=-1] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=2] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-1, b=127, counter=2, x=-2, y=63, z=-1] [L43] COND FALSE !(!(y != 0)) VAL [a=-1, b=127, counter=2, x=-2, y=63, z=-1] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-1, b=127, counter=2, x=-2, y=62, z=-3] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-1, b=127, counter=2, x=-4, y=31, z=-3] [L41] EXPR counter++ VAL [a=-1, b=127, counter=3, x=-4, y=31, z=-3] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=3] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-1, b=127, counter=3, x=-4, y=31, z=-3] [L43] COND FALSE !(!(y != 0)) VAL [a=-1, b=127, counter=3, x=-4, y=31, z=-3] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-1, b=127, counter=3, x=-4, y=30, z=-7] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-1, b=127, counter=3, x=-8, y=15, z=-7] [L41] EXPR counter++ VAL [a=-1, b=127, counter=4, x=-8, y=15, z=-7] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=4] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-1, b=127, counter=4, x=-8, y=15, z=-7] [L43] COND FALSE !(!(y != 0)) VAL [a=-1, b=127, counter=4, x=-8, y=15, z=-7] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-1, b=127, counter=4, x=-8, y=14, z=-15] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-1, b=127, counter=4, x=-16, y=7, z=-15] [L41] EXPR counter++ VAL [a=-1, b=127, counter=5, x=-16, y=7, z=-15] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=5] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-1, b=127, counter=5, x=-16, y=7, z=-15] [L43] COND FALSE !(!(y != 0)) VAL [a=-1, b=127, counter=5, x=-16, y=7, z=-15] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-1, b=127, counter=5, x=-16, y=6, z=-31] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-1, b=127, counter=5, x=-32, y=3, z=-31] [L41] EXPR counter++ VAL [a=-1, b=127, counter=6, x=-32, y=3, z=-31] [L41] COND FALSE !(counter++<5) [L53] CALL __VERIFIER_assert(z == (long long) a * b) VAL [\old(cond)=0, counter=6] [L21] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L23] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.1s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 186 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 953 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1108 IncrementalHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 211 mSDtfsCounter, 1108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 381 SyntacticMatches, 16 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=11, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 124 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 687 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 556 ConstructedInterpolants, 28 QuantifiedInterpolants, 5543 SizeOfPredicates, 18 NumberOfNonLiveVariables, 849 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 263/496 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 01:37:47,904 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