./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i -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 c28c916d59e15fbb84eacdc574b21cac712312e1644083eaa396f6071a295218 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:10:56,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:10:56,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:10:56,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:10:56,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:10:57,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:10:57,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:10:57,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:10:57,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:10:57,028 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:10:57,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:10:57,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:10:57,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:10:57,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:10:57,030 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:10:57,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:10:57,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:10:57,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:10:57,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:10:57,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:10:57,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:10:57,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:10:57,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:10:57,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:10:57,034 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:10:57,034 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:10:57,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:10:57,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:10:57,035 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:10:57,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:10:57,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:10:57,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:10:57,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:10:57,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:10:57,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:10:57,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:10:57,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:10:57,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:10:57,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:10:57,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:10:57,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:10:57,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:10:57,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c28c916d59e15fbb84eacdc574b21cac712312e1644083eaa396f6071a295218 [2024-11-18 20:10:57,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:10:57,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:10:57,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:10:57,282 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:10:57,283 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:10:57,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i [2024-11-18 20:10:58,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:10:59,019 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:10:59,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i [2024-11-18 20:10:59,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d21750ad/0e8faf8cfb894123b8da62f7be561e4e/FLAGe955bf1ed [2024-11-18 20:10:59,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d21750ad/0e8faf8cfb894123b8da62f7be561e4e [2024-11-18 20:10:59,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:10:59,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:10:59,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:10:59,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:10:59,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:10:59,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70071353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59, skipping insertion in model container [2024-11-18 20:10:59,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,089 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:10:59,275 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i[919,932] [2024-11-18 20:10:59,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:10:59,374 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:10:59,385 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i[919,932] [2024-11-18 20:10:59,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:10:59,488 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:10:59,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59 WrapperNode [2024-11-18 20:10:59,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:10:59,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:10:59,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:10:59,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:10:59,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,600 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 229 [2024-11-18 20:10:59,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:10:59,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:10:59,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:10:59,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:10:59,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,627 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,655 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]. [2024-11-18 20:10:59,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:10:59,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:10:59,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:10:59,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:10:59,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (1/1) ... [2024-11-18 20:10:59,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:10:59,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:10:59,723 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) [2024-11-18 20:10:59,752 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 [2024-11-18 20:10:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:10:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:10:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:10:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:10:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:10:59,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:10:59,870 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:10:59,872 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:11:00,316 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-18 20:11:00,317 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:11:00,332 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:11:00,333 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:11:00,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:00 BoogieIcfgContainer [2024-11-18 20:11:00,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:11:00,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:11:00,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:11:00,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:11:00,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:10:59" (1/3) ... [2024-11-18 20:11:00,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adec38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:00, skipping insertion in model container [2024-11-18 20:11:00,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:59" (2/3) ... [2024-11-18 20:11:00,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adec38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:00, skipping insertion in model container [2024-11-18 20:11:00,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:00" (3/3) ... [2024-11-18 20:11:00,343 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i [2024-11-18 20:11:00,358 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:11:00,359 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:11:00,422 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:11:00,431 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;@34de9bb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:11:00,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:11:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 20:11:00,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 20:11:00,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:00,449 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:00,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:00,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1439723346, now seen corresponding path program 1 times [2024-11-18 20:11:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267419008] [2024-11-18 20:11:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:00,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-18 20:11:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267419008] [2024-11-18 20:11:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267419008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:11:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831637232] [2024-11-18 20:11:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:00,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:11:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:11:00,798 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) [2024-11-18 20:11:00,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:11:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:00,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:11:00,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:11:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-18 20:11:00,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:11:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831637232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:00,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:11:00,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:11:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620698634] [2024-11-18 20:11:00,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:00,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:11:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:11:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:11:01,015 INFO L87 Difference]: Start difference. First operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 20:11:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:01,042 INFO L93 Difference]: Finished difference Result 179 states and 306 transitions. [2024-11-18 20:11:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:11:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-11-18 20:11:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:01,051 INFO L225 Difference]: With dead ends: 179 [2024-11-18 20:11:01,051 INFO L226 Difference]: Without dead ends: 89 [2024-11-18 20:11:01,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:11:01,057 INFO L432 NwaCegarLoop]: 139 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, 139 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 [2024-11-18 20:11:01,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:11:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-18 20:11:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-18 20:11:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 20:11:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2024-11-18 20:11:01,105 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 139 transitions. Word has length 141 [2024-11-18 20:11:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:01,106 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 139 transitions. [2024-11-18 20:11:01,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 20:11:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 139 transitions. [2024-11-18 20:11:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 20:11:01,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:01,113 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:01,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 20:11:01,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 20:11:01,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:01,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash -102599018, now seen corresponding path program 1 times [2024-11-18 20:11:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:01,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854242033] [2024-11-18 20:11:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:01,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854242033] [2024-11-18 20:11:01,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854242033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:01,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:01,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:11:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735034549] [2024-11-18 20:11:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:01,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:11:01,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:01,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:11:01,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:11:01,825 INFO L87 Difference]: Start difference. First operand 89 states and 139 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:01,976 INFO L93 Difference]: Finished difference Result 301 states and 475 transitions. [2024-11-18 20:11:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:11:01,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-18 20:11:01,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:01,981 INFO L225 Difference]: With dead ends: 301 [2024-11-18 20:11:01,981 INFO L226 Difference]: Without dead ends: 215 [2024-11-18 20:11:01,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:11:01,985 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 172 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:01,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 454 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:11:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-18 20:11:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 175. [2024-11-18 20:11:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 20:11:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 275 transitions. [2024-11-18 20:11:02,027 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 275 transitions. Word has length 141 [2024-11-18 20:11:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:02,029 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 275 transitions. [2024-11-18 20:11:02,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 275 transitions. [2024-11-18 20:11:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 20:11:02,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:02,034 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:02,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:11:02,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:02,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1750704072, now seen corresponding path program 1 times [2024-11-18 20:11:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:02,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723689835] [2024-11-18 20:11:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:02,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723689835] [2024-11-18 20:11:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723689835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:11:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465703218] [2024-11-18 20:11:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:02,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:11:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:02,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:11:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:11:02,334 INFO L87 Difference]: Start difference. First operand 175 states and 275 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:02,831 INFO L93 Difference]: Finished difference Result 514 states and 808 transitions. [2024-11-18 20:11:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:11:02,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2024-11-18 20:11:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:02,834 INFO L225 Difference]: With dead ends: 514 [2024-11-18 20:11:02,834 INFO L226 Difference]: Without dead ends: 342 [2024-11-18 20:11:02,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:11:02,837 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 170 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:02,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 523 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 20:11:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-18 20:11:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 179. [2024-11-18 20:11:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 136 states have (on average 1.463235294117647) internal successors, (199), 136 states have internal predecessors, (199), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 20:11:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 279 transitions. [2024-11-18 20:11:02,864 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 279 transitions. Word has length 142 [2024-11-18 20:11:02,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:02,865 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 279 transitions. [2024-11-18 20:11:02,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 279 transitions. [2024-11-18 20:11:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 20:11:02,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:02,867 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:02,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:11:02,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:02,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2015514019, now seen corresponding path program 1 times [2024-11-18 20:11:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998194764] [2024-11-18 20:11:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:05,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998194764] [2024-11-18 20:11:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998194764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:05,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:05,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 20:11:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088774166] [2024-11-18 20:11:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:05,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 20:11:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 20:11:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:11:05,207 INFO L87 Difference]: Start difference. First operand 179 states and 279 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:05,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:05,761 INFO L93 Difference]: Finished difference Result 588 states and 925 transitions. [2024-11-18 20:11:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 20:11:05,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 20:11:05,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:05,764 INFO L225 Difference]: With dead ends: 588 [2024-11-18 20:11:05,764 INFO L226 Difference]: Without dead ends: 412 [2024-11-18 20:11:05,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 20:11:05,768 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 279 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:05,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 426 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 20:11:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-18 20:11:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 238. [2024-11-18 20:11:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 174 states have (on average 1.4310344827586208) internal successors, (249), 174 states have internal predecessors, (249), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 20:11:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 369 transitions. [2024-11-18 20:11:05,821 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 369 transitions. Word has length 143 [2024-11-18 20:11:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:05,821 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 369 transitions. [2024-11-18 20:11:05,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 369 transitions. [2024-11-18 20:11:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 20:11:05,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:05,827 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:05,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:11:05,828 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:05,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:05,828 INFO L85 PathProgramCache]: Analyzing trace with hash 674019886, now seen corresponding path program 1 times [2024-11-18 20:11:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:05,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830050526] [2024-11-18 20:11:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:10,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:10,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830050526] [2024-11-18 20:11:10,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830050526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:10,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:10,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 20:11:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314661814] [2024-11-18 20:11:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:10,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 20:11:10,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 20:11:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:11:10,414 INFO L87 Difference]: Start difference. First operand 238 states and 369 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:15,990 INFO L93 Difference]: Finished difference Result 705 states and 1094 transitions. [2024-11-18 20:11:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 20:11:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 20:11:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:15,994 INFO L225 Difference]: With dead ends: 705 [2024-11-18 20:11:15,994 INFO L226 Difference]: Without dead ends: 529 [2024-11-18 20:11:15,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2024-11-18 20:11:15,996 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 590 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:15,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 574 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 20:11:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-18 20:11:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 346. [2024-11-18 20:11:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 270 states have (on average 1.4703703703703703) internal successors, (397), 272 states have internal predecessors, (397), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 20:11:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 537 transitions. [2024-11-18 20:11:16,023 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 537 transitions. Word has length 143 [2024-11-18 20:11:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:16,023 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 537 transitions. [2024-11-18 20:11:16,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 537 transitions. [2024-11-18 20:11:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 20:11:16,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:16,025 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:16,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:11:16,026 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:16,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash -337097364, now seen corresponding path program 1 times [2024-11-18 20:11:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:16,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195645475] [2024-11-18 20:11:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:17,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:17,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195645475] [2024-11-18 20:11:17,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195645475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:17,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:17,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 20:11:17,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020280876] [2024-11-18 20:11:17,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:17,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 20:11:17,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 20:11:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 20:11:17,819 INFO L87 Difference]: Start difference. First operand 346 states and 537 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:18,940 INFO L93 Difference]: Finished difference Result 1129 states and 1771 transitions. [2024-11-18 20:11:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 20:11:18,941 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), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 20:11:18,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:18,946 INFO L225 Difference]: With dead ends: 1129 [2024-11-18 20:11:18,946 INFO L226 Difference]: Without dead ends: 845 [2024-11-18 20:11:18,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:11:18,948 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 488 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:18,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 538 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 20:11:18,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-18 20:11:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 409. [2024-11-18 20:11:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 333 states have (on average 1.4414414414414414) internal successors, (480), 335 states have internal predecessors, (480), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 20:11:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 620 transitions. [2024-11-18 20:11:18,977 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 620 transitions. Word has length 143 [2024-11-18 20:11:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:18,978 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 620 transitions. [2024-11-18 20:11:18,978 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), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 620 transitions. [2024-11-18 20:11:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 20:11:18,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:18,980 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:18,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:11:18,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:18,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash -347048468, now seen corresponding path program 1 times [2024-11-18 20:11:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:18,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594509140] [2024-11-18 20:11:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594509140] [2024-11-18 20:11:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594509140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:20,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 20:11:20,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479044862] [2024-11-18 20:11:20,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:20,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 20:11:20,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 20:11:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 20:11:20,887 INFO L87 Difference]: Start difference. First operand 409 states and 620 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:21,836 INFO L93 Difference]: Finished difference Result 1217 states and 1868 transitions. [2024-11-18 20:11:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 20:11:21,837 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), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 20:11:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:21,842 INFO L225 Difference]: With dead ends: 1217 [2024-11-18 20:11:21,842 INFO L226 Difference]: Without dead ends: 872 [2024-11-18 20:11:21,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:11:21,844 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 435 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:21,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 529 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 20:11:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-18 20:11:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 684. [2024-11-18 20:11:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 608 states have (on average 1.5148026315789473) internal successors, (921), 610 states have internal predecessors, (921), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 20:11:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1061 transitions. [2024-11-18 20:11:21,879 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1061 transitions. Word has length 143 [2024-11-18 20:11:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:21,880 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1061 transitions. [2024-11-18 20:11:21,880 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), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1061 transitions. [2024-11-18 20:11:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 20:11:21,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:21,882 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:21,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:11:21,882 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:21,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1592812193, now seen corresponding path program 1 times [2024-11-18 20:11:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:21,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657047110] [2024-11-18 20:11:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657047110] [2024-11-18 20:11:22,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657047110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:22,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:11:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940084135] [2024-11-18 20:11:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:22,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:11:22,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:11:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:11:22,179 INFO L87 Difference]: Start difference. First operand 684 states and 1061 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:22,378 INFO L93 Difference]: Finished difference Result 1172 states and 1834 transitions. [2024-11-18 20:11:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:11:22,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 20:11:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:22,382 INFO L225 Difference]: With dead ends: 1172 [2024-11-18 20:11:22,382 INFO L226 Difference]: Without dead ends: 664 [2024-11-18 20:11:22,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:11:22,384 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 105 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:22,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 340 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:11:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-18 20:11:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 610. [2024-11-18 20:11:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 534 states have (on average 1.4887640449438202) internal successors, (795), 536 states have internal predecessors, (795), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 20:11:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 935 transitions. [2024-11-18 20:11:22,419 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 935 transitions. Word has length 143 [2024-11-18 20:11:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:22,421 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 935 transitions. [2024-11-18 20:11:22,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 935 transitions. [2024-11-18 20:11:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 20:11:22,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:22,423 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:22,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:11:22,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:22,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1716157245, now seen corresponding path program 1 times [2024-11-18 20:11:22,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:22,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624583719] [2024-11-18 20:11:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:22,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624583719] [2024-11-18 20:11:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624583719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:24,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:24,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 20:11:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067563592] [2024-11-18 20:11:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:24,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 20:11:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 20:11:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 20:11:24,910 INFO L87 Difference]: Start difference. First operand 610 states and 935 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:26,268 INFO L93 Difference]: Finished difference Result 1308 states and 2041 transitions. [2024-11-18 20:11:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 20:11:26,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 20:11:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:26,273 INFO L225 Difference]: With dead ends: 1308 [2024-11-18 20:11:26,273 INFO L226 Difference]: Without dead ends: 974 [2024-11-18 20:11:26,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-18 20:11:26,275 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 557 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:26,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 575 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 20:11:26,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-11-18 20:11:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 494. [2024-11-18 20:11:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 428 states have (on average 1.4602803738317758) internal successors, (625), 428 states have internal predecessors, (625), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 20:11:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 745 transitions. [2024-11-18 20:11:26,303 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 745 transitions. Word has length 144 [2024-11-18 20:11:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:26,304 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 745 transitions. [2024-11-18 20:11:26,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 745 transitions. [2024-11-18 20:11:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 20:11:26,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:26,305 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:26,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:11:26,306 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:26,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:26,306 INFO L85 PathProgramCache]: Analyzing trace with hash 928109453, now seen corresponding path program 1 times [2024-11-18 20:11:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:26,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434864976] [2024-11-18 20:11:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:26,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:11:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:11:52,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:11:52,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434864976] [2024-11-18 20:11:52,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434864976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:11:52,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:11:52,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 20:11:52,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436036743] [2024-11-18 20:11:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:11:52,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 20:11:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:11:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 20:11:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-18 20:11:52,247 INFO L87 Difference]: Start difference. First operand 494 states and 745 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:11:56,508 INFO L93 Difference]: Finished difference Result 1208 states and 1820 transitions. [2024-11-18 20:11:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 20:11:56,509 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 20:11:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:11:56,512 INFO L225 Difference]: With dead ends: 1208 [2024-11-18 20:11:56,512 INFO L226 Difference]: Without dead ends: 815 [2024-11-18 20:11:56,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=236, Invalid=820, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 20:11:56,514 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 518 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:11:56,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1012 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 20:11:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-18 20:11:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 639. [2024-11-18 20:11:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 573 states have (on average 1.4851657940663177) internal successors, (851), 573 states have internal predecessors, (851), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 20:11:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 971 transitions. [2024-11-18 20:11:56,541 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 971 transitions. Word has length 144 [2024-11-18 20:11:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:11:56,541 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 971 transitions. [2024-11-18 20:11:56,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:11:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 971 transitions. [2024-11-18 20:11:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 20:11:56,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:11:56,543 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:11:56,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 20:11:56,543 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:11:56,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:11:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 794095947, now seen corresponding path program 1 times [2024-11-18 20:11:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:11:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187478475] [2024-11-18 20:11:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:11:56,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:11:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:12:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:12:03,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:12:03,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187478475] [2024-11-18 20:12:03,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187478475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:12:03,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:12:03,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 20:12:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552386875] [2024-11-18 20:12:03,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:12:03,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 20:12:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:12:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 20:12:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:12:03,774 INFO L87 Difference]: Start difference. First operand 639 states and 971 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:12:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:12:05,683 INFO L93 Difference]: Finished difference Result 991 states and 1475 transitions. [2024-11-18 20:12:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 20:12:05,683 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 20:12:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:12:05,686 INFO L225 Difference]: With dead ends: 991 [2024-11-18 20:12:05,687 INFO L226 Difference]: Without dead ends: 777 [2024-11-18 20:12:05,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-11-18 20:12:05,689 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 360 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:12:05,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 832 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 20:12:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-18 20:12:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 611. [2024-11-18 20:12:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 545 states have (on average 1.4807339449541284) internal successors, (807), 545 states have internal predecessors, (807), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 20:12:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 927 transitions. [2024-11-18 20:12:05,721 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 927 transitions. Word has length 144 [2024-11-18 20:12:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:12:05,721 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 927 transitions. [2024-11-18 20:12:05,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:12:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 927 transitions. [2024-11-18 20:12:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 20:12:05,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:12:05,724 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:12:05,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 20:12:05,724 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:12:05,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:12:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1744971523, now seen corresponding path program 1 times [2024-11-18 20:12:05,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:12:05,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176199071] [2024-11-18 20:12:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:12:05,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:12:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:12:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:12:11,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:12:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176199071] [2024-11-18 20:12:11,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176199071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:12:11,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:12:11,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 20:12:11,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076557291] [2024-11-18 20:12:11,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:12:11,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 20:12:11,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:12:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 20:12:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:12:11,466 INFO L87 Difference]: Start difference. First operand 611 states and 927 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:12:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:12:13,335 INFO L93 Difference]: Finished difference Result 953 states and 1419 transitions. [2024-11-18 20:12:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 20:12:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-18 20:12:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:12:13,342 INFO L225 Difference]: With dead ends: 953 [2024-11-18 20:12:13,342 INFO L226 Difference]: Without dead ends: 725 [2024-11-18 20:12:13,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2024-11-18 20:12:13,347 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 608 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 20:12:13,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 589 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 20:12:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-18 20:12:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 603. [2024-11-18 20:12:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 537 states have (on average 1.4767225325884543) internal successors, (793), 537 states have internal predecessors, (793), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 20:12:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 913 transitions. [2024-11-18 20:12:13,406 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 913 transitions. Word has length 145 [2024-11-18 20:12:13,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:12:13,407 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 913 transitions. [2024-11-18 20:12:13,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:12:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 913 transitions. [2024-11-18 20:12:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 20:12:13,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:12:13,413 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:12:13,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 20:12:13,413 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:12:13,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:12:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 403125199, now seen corresponding path program 1 times [2024-11-18 20:12:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:12:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407855683] [2024-11-18 20:12:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:12:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:12:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:12:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 20:12:16,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:12:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407855683] [2024-11-18 20:12:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407855683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:12:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:12:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 20:12:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657345291] [2024-11-18 20:12:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:12:16,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 20:12:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:12:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 20:12:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:12:16,758 INFO L87 Difference]: Start difference. First operand 603 states and 913 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:12:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:12:19,192 INFO L93 Difference]: Finished difference Result 1249 states and 1905 transitions. [2024-11-18 20:12:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 20:12:19,192 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-18 20:12:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:12:19,196 INFO L225 Difference]: With dead ends: 1249 [2024-11-18 20:12:19,200 INFO L226 Difference]: Without dead ends: 1035 [2024-11-18 20:12:19,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:12:19,206 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 416 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:12:19,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 586 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 20:12:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-18 20:12:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 617. [2024-11-18 20:12:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 551 states have (on average 1.4754990925589837) internal successors, (813), 551 states have internal predecessors, (813), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 20:12:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 933 transitions. [2024-11-18 20:12:19,264 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 933 transitions. Word has length 145 [2024-11-18 20:12:19,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:12:19,264 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 933 transitions. [2024-11-18 20:12:19,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 20:12:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 933 transitions. [2024-11-18 20:12:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 20:12:19,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:12:19,268 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:12:19,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 20:12:19,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:12:19,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:12:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash 393174095, now seen corresponding path program 1 times [2024-11-18 20:12:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:12:19,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175134426] [2024-11-18 20:12:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:12:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:12:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat