./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-86.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_normal_file-86.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 6148f57821a61bb66da81c5e9fb13250aa14d609ed7f31d3b9237ae5f0b8d661 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:55:58,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:55:58,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:55:58,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:55:58,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:55:58,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:55:58,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:55:58,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:55:58,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:55:58,257 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:55:58,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:55:58,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:55:58,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:55:58,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:55:58,262 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:55:58,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:55:58,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:55:58,263 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:55:58,263 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:55:58,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:55:58,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:55:58,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:55:58,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:55:58,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:55:58,265 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:55:58,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:55:58,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:55:58,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:55:58,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:55:58,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:55:58,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:55:58,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:55:58,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:55:58,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:55:58,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:55:58,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:55:58,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:55:58,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:55:58,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:55:58,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:55:58,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:55:58,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:55:58,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6148f57821a61bb66da81c5e9fb13250aa14d609ed7f31d3b9237ae5f0b8d661 [2024-11-18 21:55:58,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:55:58,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:55:58,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:55:58,549 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:55:58,550 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:55:58,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-86.i [2024-11-18 21:55:59,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:56:00,075 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:56:00,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-86.i [2024-11-18 21:56:00,087 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28ae7db94/7437d49ef707450cba26b34eff669fb6/FLAG448c308e1 [2024-11-18 21:56:00,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28ae7db94/7437d49ef707450cba26b34eff669fb6 [2024-11-18 21:56:00,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:56:00,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:56:00,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:56:00,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:56:00,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:56:00,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fa01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00, skipping insertion in model container [2024-11-18 21:56:00,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:56:00,268 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_normal_file-86.i[913,926] [2024-11-18 21:56:00,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:56:00,322 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:56:00,349 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_normal_file-86.i[913,926] [2024-11-18 21:56:00,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:56:00,412 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:56:00,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00 WrapperNode [2024-11-18 21:56:00,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:56:00,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:56:00,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:56:00,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:56:00,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,505 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 127 [2024-11-18 21:56:00,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:56:00,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:56:00,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:56:00,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:56:00,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,538 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,575 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 21:56:00,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:56:00,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:56:00,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:56:00,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:56:00,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (1/1) ... [2024-11-18 21:56:00,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:56:00,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:56:00,664 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 21:56:00,671 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 21:56:00,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:56:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:56:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:56:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:56:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:56:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:56:00,778 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:56:00,782 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:56:01,166 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-18 21:56:01,167 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:56:01,181 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:56:01,181 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:56:01,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:56:01 BoogieIcfgContainer [2024-11-18 21:56:01,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:56:01,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:56:01,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:56:01,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:56:01,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:56:00" (1/3) ... [2024-11-18 21:56:01,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592a6d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:56:01, skipping insertion in model container [2024-11-18 21:56:01,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:00" (2/3) ... [2024-11-18 21:56:01,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592a6d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:56:01, skipping insertion in model container [2024-11-18 21:56:01,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:56:01" (3/3) ... [2024-11-18 21:56:01,190 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-86.i [2024-11-18 21:56:01,205 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:56:01,206 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:56:01,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:56:01,255 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;@2e6882f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:56:01,255 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:56:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-18 21:56:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 21:56:01,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:01,268 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:01,269 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:01,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1399999483, now seen corresponding path program 1 times [2024-11-18 21:56:01,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:01,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539851195] [2024-11-18 21:56:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-18 21:56:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539851195] [2024-11-18 21:56:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539851195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:56:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484593676] [2024-11-18 21:56:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:01,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:56:01,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:56:01,504 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 21:56:01,506 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 21:56:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:01,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:56:01,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:56:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-18 21:56:01,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:56:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484593676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:56:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:56:01,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667392259] [2024-11-18 21:56:01,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:01,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:56:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:56:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:56:01,682 INFO L87 Difference]: Start difference. First operand has 55 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 21:56:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:01,703 INFO L93 Difference]: Finished difference Result 103 states and 173 transitions. [2024-11-18 21:56:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:56:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2024-11-18 21:56:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:01,710 INFO L225 Difference]: With dead ends: 103 [2024-11-18 21:56:01,711 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 21:56:01,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 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 21:56:01,716 INFO L432 NwaCegarLoop]: 75 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, 75 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 21:56:01,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:56:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 21:56:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-18 21:56:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-18 21:56:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2024-11-18 21:56:01,750 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 75 transitions. Word has length 101 [2024-11-18 21:56:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:01,750 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 75 transitions. [2024-11-18 21:56:01,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 21:56:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2024-11-18 21:56:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 21:56:01,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:01,754 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:01,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 21:56:01,957 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 21:56:01,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:01,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1736788935, now seen corresponding path program 1 times [2024-11-18 21:56:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:01,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989774680] [2024-11-18 21:56:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:01,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:02,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:02,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989774680] [2024-11-18 21:56:02,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989774680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:02,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:02,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:56:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661825970] [2024-11-18 21:56:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:02,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:56:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:02,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:56:02,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:56:02,391 INFO L87 Difference]: Start difference. First operand 51 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:02,554 INFO L93 Difference]: Finished difference Result 148 states and 220 transitions. [2024-11-18 21:56:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:56:02,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2024-11-18 21:56:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:02,557 INFO L225 Difference]: With dead ends: 148 [2024-11-18 21:56:02,557 INFO L226 Difference]: Without dead ends: 100 [2024-11-18 21:56:02,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:56:02,560 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 67 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:02,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 240 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:56:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-18 21:56:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2024-11-18 21:56:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-18 21:56:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 118 transitions. [2024-11-18 21:56:02,578 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 118 transitions. Word has length 101 [2024-11-18 21:56:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:02,579 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 118 transitions. [2024-11-18 21:56:02,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 118 transitions. [2024-11-18 21:56:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 21:56:02,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:02,584 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:02,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:56:02,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:02,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash 725671685, now seen corresponding path program 1 times [2024-11-18 21:56:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:02,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466397571] [2024-11-18 21:56:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:02,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:06,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:06,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466397571] [2024-11-18 21:56:06,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466397571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:06,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:06,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 21:56:06,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824542304] [2024-11-18 21:56:06,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:06,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 21:56:06,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 21:56:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-18 21:56:06,593 INFO L87 Difference]: Start difference. First operand 80 states and 118 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:07,597 INFO L93 Difference]: Finished difference Result 204 states and 296 transitions. [2024-11-18 21:56:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 21:56:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2024-11-18 21:56:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:07,601 INFO L225 Difference]: With dead ends: 204 [2024-11-18 21:56:07,601 INFO L226 Difference]: Without dead ends: 156 [2024-11-18 21:56:07,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2024-11-18 21:56:07,603 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 229 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:07,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 506 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:56:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-18 21:56:07,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 97. [2024-11-18 21:56:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-18 21:56:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2024-11-18 21:56:07,618 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 101 [2024-11-18 21:56:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:07,619 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2024-11-18 21:56:07,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2024-11-18 21:56:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 21:56:07,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:07,621 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:07,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:56:07,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:07,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1426736263, now seen corresponding path program 1 times [2024-11-18 21:56:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:07,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679805845] [2024-11-18 21:56:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:07,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:07,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679805845] [2024-11-18 21:56:07,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679805845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:07,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:07,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:56:07,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904081267] [2024-11-18 21:56:07,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:07,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:56:07,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:56:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:56:07,670 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:07,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:07,714 INFO L93 Difference]: Finished difference Result 192 states and 283 transitions. [2024-11-18 21:56:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:56:07,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2024-11-18 21:56:07,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:07,716 INFO L225 Difference]: With dead ends: 192 [2024-11-18 21:56:07,716 INFO L226 Difference]: Without dead ends: 144 [2024-11-18 21:56:07,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:56:07,718 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 67 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:07,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 150 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:56:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-18 21:56:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2024-11-18 21:56:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 93 states have internal predecessors, (117), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:56:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 207 transitions. [2024-11-18 21:56:07,740 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 207 transitions. Word has length 101 [2024-11-18 21:56:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:07,741 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 207 transitions. [2024-11-18 21:56:07,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 207 transitions. [2024-11-18 21:56:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 21:56:07,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:07,742 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:07,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:56:07,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:07,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 862330139, now seen corresponding path program 1 times [2024-11-18 21:56:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:07,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574262674] [2024-11-18 21:56:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:07,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:07,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574262674] [2024-11-18 21:56:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574262674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:07,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:07,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:56:07,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261462230] [2024-11-18 21:56:07,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:07,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:56:07,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:56:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:56:07,940 INFO L87 Difference]: Start difference. First operand 142 states and 207 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:07,976 INFO L93 Difference]: Finished difference Result 247 states and 361 transitions. [2024-11-18 21:56:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:56:07,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-18 21:56:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:07,978 INFO L225 Difference]: With dead ends: 247 [2024-11-18 21:56:07,978 INFO L226 Difference]: Without dead ends: 151 [2024-11-18 21:56:07,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:56:07,979 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 6 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:07,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 196 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:56:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-18 21:56:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 142. [2024-11-18 21:56:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 93 states have internal predecessors, (114), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:56:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 204 transitions. [2024-11-18 21:56:08,002 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 204 transitions. Word has length 102 [2024-11-18 21:56:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:08,002 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 204 transitions. [2024-11-18 21:56:08,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 204 transitions. [2024-11-18 21:56:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 21:56:08,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:08,006 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:08,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:56:08,006 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:08,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1657629795, now seen corresponding path program 1 times [2024-11-18 21:56:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462677150] [2024-11-18 21:56:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:13,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:13,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462677150] [2024-11-18 21:56:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462677150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:13,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:56:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129046981] [2024-11-18 21:56:13,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:13,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:56:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:56:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:56:13,434 INFO L87 Difference]: Start difference. First operand 142 states and 204 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:16,548 INFO L93 Difference]: Finished difference Result 197 states and 265 transitions. [2024-11-18 21:56:16,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 21:56:16,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-18 21:56:16,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:16,551 INFO L225 Difference]: With dead ends: 197 [2024-11-18 21:56:16,551 INFO L226 Difference]: Without dead ends: 195 [2024-11-18 21:56:16,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2024-11-18 21:56:16,552 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 233 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:16,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 463 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 21:56:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-18 21:56:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 140. [2024-11-18 21:56:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 91 states have internal predecessors, (111), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:56:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 201 transitions. [2024-11-18 21:56:16,563 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 201 transitions. Word has length 102 [2024-11-18 21:56:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:16,563 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 201 transitions. [2024-11-18 21:56:16,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 201 transitions. [2024-11-18 21:56:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 21:56:16,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:16,565 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:16,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:56:16,565 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:16,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:16,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1074487553, now seen corresponding path program 1 times [2024-11-18 21:56:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443711039] [2024-11-18 21:56:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:16,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:21,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:21,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443711039] [2024-11-18 21:56:21,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443711039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:21,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:21,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:56:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82028722] [2024-11-18 21:56:21,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:21,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:56:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:56:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:56:21,923 INFO L87 Difference]: Start difference. First operand 140 states and 201 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:25,398 INFO L93 Difference]: Finished difference Result 195 states and 263 transitions. [2024-11-18 21:56:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 21:56:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-18 21:56:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:25,400 INFO L225 Difference]: With dead ends: 195 [2024-11-18 21:56:25,400 INFO L226 Difference]: Without dead ends: 193 [2024-11-18 21:56:25,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2024-11-18 21:56:25,401 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 269 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:25,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 420 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 21:56:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-18 21:56:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 143. [2024-11-18 21:56:25,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 94 states have internal predecessors, (115), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:56:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 205 transitions. [2024-11-18 21:56:25,411 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 205 transitions. Word has length 102 [2024-11-18 21:56:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:25,411 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 205 transitions. [2024-11-18 21:56:25,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 205 transitions. [2024-11-18 21:56:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 21:56:25,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:25,412 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:25,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:56:25,413 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:25,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2101752518, now seen corresponding path program 1 times [2024-11-18 21:56:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:25,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791237323] [2024-11-18 21:56:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:25,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:32,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791237323] [2024-11-18 21:56:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791237323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:56:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525419131] [2024-11-18 21:56:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:32,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:56:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:32,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:56:32,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:56:32,357 INFO L87 Difference]: Start difference. First operand 143 states and 205 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:37,825 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2024-11-18 21:56:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 21:56:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-18 21:56:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:37,829 INFO L225 Difference]: With dead ends: 211 [2024-11-18 21:56:37,829 INFO L226 Difference]: Without dead ends: 209 [2024-11-18 21:56:37,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=262, Invalid=730, Unknown=0, NotChecked=0, Total=992 [2024-11-18 21:56:37,834 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 224 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:37,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 422 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 21:56:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-18 21:56:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 153. [2024-11-18 21:56:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 104 states have internal predecessors, (128), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:56:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 218 transitions. [2024-11-18 21:56:37,852 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 218 transitions. Word has length 102 [2024-11-18 21:56:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:37,853 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 218 transitions. [2024-11-18 21:56:37,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 218 transitions. [2024-11-18 21:56:37,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 21:56:37,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:37,854 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:37,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:56:37,855 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:37,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:37,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1421694148, now seen corresponding path program 1 times [2024-11-18 21:56:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:37,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975868627] [2024-11-18 21:56:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:37,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975868627] [2024-11-18 21:56:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975868627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:44,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:44,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:56:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121977429] [2024-11-18 21:56:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:44,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:56:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:56:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:56:44,433 INFO L87 Difference]: Start difference. First operand 153 states and 218 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:50,601 INFO L93 Difference]: Finished difference Result 207 states and 278 transitions. [2024-11-18 21:56:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 21:56:50,602 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2024-11-18 21:56:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:50,603 INFO L225 Difference]: With dead ends: 207 [2024-11-18 21:56:50,603 INFO L226 Difference]: Without dead ends: 205 [2024-11-18 21:56:50,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-18 21:56:50,604 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 235 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:50,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 400 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 21:56:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-18 21:56:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 153. [2024-11-18 21:56:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 104 states have internal predecessors, (128), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:56:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 218 transitions. [2024-11-18 21:56:50,617 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 218 transitions. Word has length 102 [2024-11-18 21:56:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:50,617 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 218 transitions. [2024-11-18 21:56:50,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 218 transitions. [2024-11-18 21:56:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 21:56:50,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:50,619 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:50,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 21:56:50,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:50,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash 206585705, now seen corresponding path program 1 times [2024-11-18 21:56:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:50,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114726281] [2024-11-18 21:56:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:50,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:56:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:56:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:56:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114726281] [2024-11-18 21:56:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114726281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:56:54,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:56:54,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:56:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996143495] [2024-11-18 21:56:54,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:56:54,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:56:54,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:56:54,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:56:54,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:56:54,701 INFO L87 Difference]: Start difference. First operand 153 states and 218 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:56,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:56:56,627 INFO L93 Difference]: Finished difference Result 195 states and 264 transitions. [2024-11-18 21:56:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 21:56:56,628 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2024-11-18 21:56:56,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:56:56,632 INFO L225 Difference]: With dead ends: 195 [2024-11-18 21:56:56,632 INFO L226 Difference]: Without dead ends: 193 [2024-11-18 21:56:56,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2024-11-18 21:56:56,633 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 184 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:56:56,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 450 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 21:56:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-18 21:56:56,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 150. [2024-11-18 21:56:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 101 states have internal predecessors, (124), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:56:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 214 transitions. [2024-11-18 21:56:56,641 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 214 transitions. Word has length 103 [2024-11-18 21:56:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:56:56,641 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 214 transitions. [2024-11-18 21:56:56,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:56:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 214 transitions. [2024-11-18 21:56:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 21:56:56,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:56:56,642 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:56,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 21:56:56,642 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:56:56,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:56:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash 886533128, now seen corresponding path program 1 times [2024-11-18 21:56:56,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:56:56,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443074016] [2024-11-18 21:56:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:56:56,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:56:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:57:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:57:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:57:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443074016] [2024-11-18 21:57:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443074016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:57:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:57:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 21:57:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88581086] [2024-11-18 21:57:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:57:02,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 21:57:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:57:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 21:57:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-18 21:57:02,575 INFO L87 Difference]: Start difference. First operand 150 states and 214 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 21:57:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:57:07,384 INFO L93 Difference]: Finished difference Result 213 states and 284 transitions. [2024-11-18 21:57:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 21:57:07,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 103 [2024-11-18 21:57:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:57:07,386 INFO L225 Difference]: With dead ends: 213 [2024-11-18 21:57:07,386 INFO L226 Difference]: Without dead ends: 211 [2024-11-18 21:57:07,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 21:57:07,387 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 334 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:57:07,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 430 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 21:57:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-18 21:57:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 153. [2024-11-18 21:57:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 104 states have internal predecessors, (128), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:57:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 218 transitions. [2024-11-18 21:57:07,416 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 218 transitions. Word has length 103 [2024-11-18 21:57:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:57:07,416 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 218 transitions. [2024-11-18 21:57:07,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 21:57:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 218 transitions. [2024-11-18 21:57:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 21:57:07,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:57:07,417 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:07,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 21:57:07,418 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:57:07,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:57:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash -674469778, now seen corresponding path program 1 times [2024-11-18 21:57:07,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:57:07,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050140275] [2024-11-18 21:57:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:57:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:57:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:57:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:57:15,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:57:15,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050140275] [2024-11-18 21:57:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050140275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:57:15,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:57:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:57:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355505346] [2024-11-18 21:57:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:57:15,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:57:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:57:15,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:57:15,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:57:15,344 INFO L87 Difference]: Start difference. First operand 153 states and 218 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:57:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:57:22,431 INFO L93 Difference]: Finished difference Result 211 states and 282 transitions. [2024-11-18 21:57:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 21:57:22,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2024-11-18 21:57:22,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:57:22,433 INFO L225 Difference]: With dead ends: 211 [2024-11-18 21:57:22,433 INFO L226 Difference]: Without dead ends: 209 [2024-11-18 21:57:22,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 21:57:22,434 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 233 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:57:22,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 409 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 21:57:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-18 21:57:22,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 156. [2024-11-18 21:57:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 107 states have (on average 1.233644859813084) internal successors, (132), 107 states have internal predecessors, (132), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 21:57:22,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2024-11-18 21:57:22,452 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 103 [2024-11-18 21:57:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:57:22,452 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2024-11-18 21:57:22,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 21:57:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2024-11-18 21:57:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 21:57:22,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:57:22,454 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:22,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:57:22,454 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:57:22,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:57:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash 493506118, now seen corresponding path program 1 times [2024-11-18 21:57:22,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:57:22,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863495874] [2024-11-18 21:57:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:57:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:57:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:57:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-18 21:57:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:57:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863495874] [2024-11-18 21:57:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863495874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:57:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:57:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-18 21:57:31,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417068620] [2024-11-18 21:57:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:57:31,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 21:57:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:57:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 21:57:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-18 21:57:31,376 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)