./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22565549446fb10d699e81ca4083722d91d5f2743033fe3de4e7c76b9089640a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:41:11,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:41:11,230 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:41:11,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:41:11,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:41:11,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:41:11,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:41:11,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:41:11,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:41:11,278 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:41:11,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:41:11,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:41:11,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:41:11,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:41:11,282 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:41:11,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:41:11,283 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:41:11,283 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:41:11,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:41:11,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:41:11,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:41:11,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:41:11,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:41:11,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:41:11,286 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:41:11,286 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:41:11,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:41:11,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:41:11,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:41:11,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:41:11,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:41:11,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:41:11,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:41:11,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:41:11,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:41:11,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:41:11,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:41:11,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:41:11,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:41:11,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:41:11,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:41:11,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:41:11,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22565549446fb10d699e81ca4083722d91d5f2743033fe3de4e7c76b9089640a [2024-10-24 01:41:11,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:41:11,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:41:11,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:41:11,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:41:11,602 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:41:11,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-24 01:41:13,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:41:13,351 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:41:13,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-24 01:41:13,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daefeeb7a/d919441f848045bf9e1db7e3a7c41ffd/FLAGc354f33dd [2024-10-24 01:41:13,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daefeeb7a/d919441f848045bf9e1db7e3a7c41ffd [2024-10-24 01:41:13,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:41:13,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:41:13,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:41:13,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:41:13,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:41:13,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:41:13" (1/1) ... [2024-10-24 01:41:13,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ded69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:13, skipping insertion in model container [2024-10-24 01:41:13,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:41:13" (1/1) ... [2024-10-24 01:41:13,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:41:14,024 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2024-10-24 01:41:14,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:41:14,088 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:41:14,146 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2024-10-24 01:41:14,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:41:14,197 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:41:14,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14 WrapperNode [2024-10-24 01:41:14,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:41:14,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:41:14,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:41:14,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:41:14,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,268 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 644 [2024-10-24 01:41:14,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:41:14,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:41:14,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:41:14,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:41:14,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,325 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]. [2024-10-24 01:41:14,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:41:14,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:41:14,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:41:14,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:41:14,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (1/1) ... [2024-10-24 01:41:14,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:41:14,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:41:14,406 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) [2024-10-24 01:41:14,412 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 [2024-10-24 01:41:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:41:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:41:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:41:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:41:14,603 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:41:14,604 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:41:15,231 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-10-24 01:41:15,231 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:41:15,270 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:41:15,270 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:41:15,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:41:15 BoogieIcfgContainer [2024-10-24 01:41:15,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:41:15,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:41:15,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:41:15,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:41:15,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:41:13" (1/3) ... [2024-10-24 01:41:15,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0aad67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:41:15, skipping insertion in model container [2024-10-24 01:41:15,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:41:14" (2/3) ... [2024-10-24 01:41:15,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0aad67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:41:15, skipping insertion in model container [2024-10-24 01:41:15,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:41:15" (3/3) ... [2024-10-24 01:41:15,286 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-24 01:41:15,305 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:41:15,305 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:41:15,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:41:15,411 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;@3003f095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:41:15,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:41:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-24 01:41:15,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:15,429 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:15,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:15,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1575541599, now seen corresponding path program 1 times [2024-10-24 01:41:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405479904] [2024-10-24 01:41:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:16,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:16,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405479904] [2024-10-24 01:41:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405479904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:16,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:41:16,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907167599] [2024-10-24 01:41:16,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:16,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:16,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:16,172 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:16,413 INFO L93 Difference]: Finished difference Result 510 states and 828 transitions. [2024-10-24 01:41:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-10-24 01:41:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:16,433 INFO L225 Difference]: With dead ends: 510 [2024-10-24 01:41:16,434 INFO L226 Difference]: Without dead ends: 436 [2024-10-24 01:41:16,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:16,441 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 905 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:16,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1264 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:41:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-10-24 01:41:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 254. [2024-10-24 01:41:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.517786561264822) internal successors, (384), 253 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2024-10-24 01:41:16,501 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 48 [2024-10-24 01:41:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:16,503 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2024-10-24 01:41:16,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2024-10-24 01:41:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 01:41:16,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:16,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:16,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:41:16,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:16,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1998714766, now seen corresponding path program 1 times [2024-10-24 01:41:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698687456] [2024-10-24 01:41:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:16,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:16,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698687456] [2024-10-24 01:41:16,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698687456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:16,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673273706] [2024-10-24 01:41:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:16,639 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:16,687 INFO L93 Difference]: Finished difference Result 626 states and 964 transitions. [2024-10-24 01:41:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:16,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 01:41:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:16,691 INFO L225 Difference]: With dead ends: 626 [2024-10-24 01:41:16,693 INFO L226 Difference]: Without dead ends: 428 [2024-10-24 01:41:16,694 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 [2024-10-24 01:41:16,696 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:16,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-24 01:41:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2024-10-24 01:41:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.5058823529411764) internal successors, (640), 425 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 640 transitions. [2024-10-24 01:41:16,719 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 640 transitions. Word has length 51 [2024-10-24 01:41:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:16,719 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 640 transitions. [2024-10-24 01:41:16,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 640 transitions. [2024-10-24 01:41:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 01:41:16,721 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:16,722 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:16,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:41:16,722 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:16,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash -794348179, now seen corresponding path program 1 times [2024-10-24 01:41:16,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:16,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426135380] [2024-10-24 01:41:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:16,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:16,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426135380] [2024-10-24 01:41:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426135380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024176463] [2024-10-24 01:41:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:16,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:16,809 INFO L87 Difference]: Start difference. First operand 426 states and 640 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:16,841 INFO L93 Difference]: Finished difference Result 1076 states and 1637 transitions. [2024-10-24 01:41:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 01:41:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:16,845 INFO L225 Difference]: With dead ends: 1076 [2024-10-24 01:41:16,846 INFO L226 Difference]: Without dead ends: 748 [2024-10-24 01:41:16,850 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 [2024-10-24 01:41:16,852 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:16,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:16,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-10-24 01:41:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2024-10-24 01:41:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.4953020134228188) internal successors, (1114), 745 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1114 transitions. [2024-10-24 01:41:16,873 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1114 transitions. Word has length 51 [2024-10-24 01:41:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:16,874 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1114 transitions. [2024-10-24 01:41:16,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1114 transitions. [2024-10-24 01:41:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 01:41:16,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:16,877 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:16,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:41:16,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:16,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1645949330, now seen corresponding path program 1 times [2024-10-24 01:41:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:16,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762874394] [2024-10-24 01:41:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:16,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:16,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762874394] [2024-10-24 01:41:16,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762874394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:16,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:16,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663546220] [2024-10-24 01:41:16,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:16,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:16,969 INFO L87 Difference]: Start difference. First operand 746 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:17,002 INFO L93 Difference]: Finished difference Result 1856 states and 2791 transitions. [2024-10-24 01:41:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:17,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 01:41:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:17,008 INFO L225 Difference]: With dead ends: 1856 [2024-10-24 01:41:17,009 INFO L226 Difference]: Without dead ends: 1292 [2024-10-24 01:41:17,010 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 [2024-10-24 01:41:17,011 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:17,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2024-10-24 01:41:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1290. [2024-10-24 01:41:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.4755624515128005) internal successors, (1902), 1289 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1902 transitions. [2024-10-24 01:41:17,039 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1902 transitions. Word has length 51 [2024-10-24 01:41:17,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:17,039 INFO L471 AbstractCegarLoop]: Abstraction has 1290 states and 1902 transitions. [2024-10-24 01:41:17,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1902 transitions. [2024-10-24 01:41:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:41:17,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:17,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:17,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:41:17,042 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:17,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:17,043 INFO L85 PathProgramCache]: Analyzing trace with hash 245016470, now seen corresponding path program 1 times [2024-10-24 01:41:17,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:17,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631420893] [2024-10-24 01:41:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:17,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631420893] [2024-10-24 01:41:17,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631420893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:17,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:17,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:41:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684735245] [2024-10-24 01:41:17,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:17,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:17,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:17,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:17,198 INFO L87 Difference]: Start difference. First operand 1290 states and 1902 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:17,310 INFO L93 Difference]: Finished difference Result 2510 states and 3767 transitions. [2024-10-24 01:41:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-24 01:41:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:17,322 INFO L225 Difference]: With dead ends: 2510 [2024-10-24 01:41:17,322 INFO L226 Difference]: Without dead ends: 2144 [2024-10-24 01:41:17,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:17,328 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 639 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:17,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1140 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:41:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2024-10-24 01:41:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1739. [2024-10-24 01:41:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 1.4838895281933258) internal successors, (2579), 1738 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2579 transitions. [2024-10-24 01:41:17,376 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2579 transitions. Word has length 52 [2024-10-24 01:41:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:17,376 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 2579 transitions. [2024-10-24 01:41:17,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2579 transitions. [2024-10-24 01:41:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:41:17,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:17,380 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:17,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:41:17,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:17,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -102096570, now seen corresponding path program 1 times [2024-10-24 01:41:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:17,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468317923] [2024-10-24 01:41:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:17,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:17,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:17,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468317923] [2024-10-24 01:41:17,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468317923] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:17,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:17,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:41:17,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625173857] [2024-10-24 01:41:17,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:17,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:17,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:17,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:17,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:17,556 INFO L87 Difference]: Start difference. First operand 1739 states and 2579 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:17,660 INFO L93 Difference]: Finished difference Result 2959 states and 4444 transitions. [2024-10-24 01:41:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:17,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-24 01:41:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:17,673 INFO L225 Difference]: With dead ends: 2959 [2024-10-24 01:41:17,673 INFO L226 Difference]: Without dead ends: 2593 [2024-10-24 01:41:17,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:17,677 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 631 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:17,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 995 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:41:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2024-10-24 01:41:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2084. [2024-10-24 01:41:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.4891982717234757) internal successors, (3102), 2083 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3102 transitions. [2024-10-24 01:41:17,737 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3102 transitions. Word has length 52 [2024-10-24 01:41:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:17,737 INFO L471 AbstractCegarLoop]: Abstraction has 2084 states and 3102 transitions. [2024-10-24 01:41:17,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3102 transitions. [2024-10-24 01:41:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:41:17,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:17,741 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:17,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:41:17,741 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:17,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1890794456, now seen corresponding path program 1 times [2024-10-24 01:41:17,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:17,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102171429] [2024-10-24 01:41:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:17,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102171429] [2024-10-24 01:41:17,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102171429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:17,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:17,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:41:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538120030] [2024-10-24 01:41:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:17,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:17,903 INFO L87 Difference]: Start difference. First operand 2084 states and 3102 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:18,010 INFO L93 Difference]: Finished difference Result 3358 states and 5044 transitions. [2024-10-24 01:41:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-24 01:41:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:18,020 INFO L225 Difference]: With dead ends: 3358 [2024-10-24 01:41:18,021 INFO L226 Difference]: Without dead ends: 2992 [2024-10-24 01:41:18,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:18,024 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 633 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:18,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1140 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:41:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2024-10-24 01:41:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2374. [2024-10-24 01:41:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 1.493046776232617) internal successors, (3543), 2373 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3543 transitions. [2024-10-24 01:41:18,123 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3543 transitions. Word has length 52 [2024-10-24 01:41:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:18,124 INFO L471 AbstractCegarLoop]: Abstraction has 2374 states and 3543 transitions. [2024-10-24 01:41:18,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3543 transitions. [2024-10-24 01:41:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 01:41:18,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:18,127 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:18,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:41:18,128 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:18,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash 906241263, now seen corresponding path program 1 times [2024-10-24 01:41:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:18,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387110468] [2024-10-24 01:41:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:18,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387110468] [2024-10-24 01:41:18,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387110468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:18,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:18,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:41:18,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747472416] [2024-10-24 01:41:18,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:18,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:18,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:18,250 INFO L87 Difference]: Start difference. First operand 2374 states and 3543 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:18,476 INFO L93 Difference]: Finished difference Result 5638 states and 8418 transitions. [2024-10-24 01:41:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:18,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-24 01:41:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:18,487 INFO L225 Difference]: With dead ends: 5638 [2024-10-24 01:41:18,487 INFO L226 Difference]: Without dead ends: 3308 [2024-10-24 01:41:18,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:18,493 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 903 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:18,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 228 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:41:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2024-10-24 01:41:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3290. [2024-10-24 01:41:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.482213438735178) internal successors, (4875), 3289 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4875 transitions. [2024-10-24 01:41:18,562 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4875 transitions. Word has length 56 [2024-10-24 01:41:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:18,562 INFO L471 AbstractCegarLoop]: Abstraction has 3290 states and 4875 transitions. [2024-10-24 01:41:18,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4875 transitions. [2024-10-24 01:41:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 01:41:18,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:18,565 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:18,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:41:18,565 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:18,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash 616335039, now seen corresponding path program 1 times [2024-10-24 01:41:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244136009] [2024-10-24 01:41:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:18,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:18,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:18,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244136009] [2024-10-24 01:41:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244136009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:18,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:41:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160074341] [2024-10-24 01:41:18,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:18,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:18,670 INFO L87 Difference]: Start difference. First operand 3290 states and 4875 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:18,896 INFO L93 Difference]: Finished difference Result 7769 states and 11510 transitions. [2024-10-24 01:41:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:18,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-24 01:41:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:18,944 INFO L225 Difference]: With dead ends: 7769 [2024-10-24 01:41:18,945 INFO L226 Difference]: Without dead ends: 4559 [2024-10-24 01:41:18,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:18,950 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 860 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:18,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 230 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:41:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2024-10-24 01:41:19,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4534. [2024-10-24 01:41:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4533 states have (on average 1.4683432605338629) internal successors, (6656), 4533 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 6656 transitions. [2024-10-24 01:41:19,036 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 6656 transitions. Word has length 56 [2024-10-24 01:41:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:19,036 INFO L471 AbstractCegarLoop]: Abstraction has 4534 states and 6656 transitions. [2024-10-24 01:41:19,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 6656 transitions. [2024-10-24 01:41:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 01:41:19,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:19,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:19,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:41:19,040 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:19,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1205433356, now seen corresponding path program 1 times [2024-10-24 01:41:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:19,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223711053] [2024-10-24 01:41:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:19,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:19,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:19,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223711053] [2024-10-24 01:41:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223711053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:19,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:41:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239975568] [2024-10-24 01:41:19,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:19,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:19,134 INFO L87 Difference]: Start difference. First operand 4534 states and 6656 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:19,349 INFO L93 Difference]: Finished difference Result 10834 states and 15859 transitions. [2024-10-24 01:41:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-24 01:41:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:19,375 INFO L225 Difference]: With dead ends: 10834 [2024-10-24 01:41:19,376 INFO L226 Difference]: Without dead ends: 6326 [2024-10-24 01:41:19,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:19,384 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 882 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:19,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 209 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:41:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6326 states. [2024-10-24 01:41:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6326 to 6275. [2024-10-24 01:41:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6275 states, 6274 states have (on average 1.4423015620019126) internal successors, (9049), 6274 states have internal predecessors, (9049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6275 states to 6275 states and 9049 transitions. [2024-10-24 01:41:19,533 INFO L78 Accepts]: Start accepts. Automaton has 6275 states and 9049 transitions. Word has length 57 [2024-10-24 01:41:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:19,533 INFO L471 AbstractCegarLoop]: Abstraction has 6275 states and 9049 transitions. [2024-10-24 01:41:19,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:19,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6275 states and 9049 transitions. [2024-10-24 01:41:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 01:41:19,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:19,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:19,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:41:19,537 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:19,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1874451944, now seen corresponding path program 1 times [2024-10-24 01:41:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844023191] [2024-10-24 01:41:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:19,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844023191] [2024-10-24 01:41:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844023191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:19,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:41:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111299467] [2024-10-24 01:41:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:19,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:41:19,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:41:19,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:19,695 INFO L87 Difference]: Start difference. First operand 6275 states and 9049 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:20,029 INFO L93 Difference]: Finished difference Result 14201 states and 20353 transitions. [2024-10-24 01:41:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:41:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-24 01:41:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:20,051 INFO L225 Difference]: With dead ends: 14201 [2024-10-24 01:41:20,052 INFO L226 Difference]: Without dead ends: 10955 [2024-10-24 01:41:20,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:41:20,061 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 1107 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:20,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 328 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:41:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2024-10-24 01:41:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 6295. [2024-10-24 01:41:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 6294 states have (on average 1.4415316174134096) internal successors, (9073), 6294 states have internal predecessors, (9073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:20,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 9073 transitions. [2024-10-24 01:41:20,231 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 9073 transitions. Word has length 58 [2024-10-24 01:41:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:20,232 INFO L471 AbstractCegarLoop]: Abstraction has 6295 states and 9073 transitions. [2024-10-24 01:41:20,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 9073 transitions. [2024-10-24 01:41:20,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 01:41:20,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:20,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:20,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:41:20,236 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:20,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash 911284937, now seen corresponding path program 1 times [2024-10-24 01:41:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:20,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207629135] [2024-10-24 01:41:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:20,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:20,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:20,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207629135] [2024-10-24 01:41:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207629135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:20,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:41:20,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947821257] [2024-10-24 01:41:20,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:20,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:41:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:41:20,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:20,367 INFO L87 Difference]: Start difference. First operand 6295 states and 9073 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:20,757 INFO L93 Difference]: Finished difference Result 16429 states and 23515 transitions. [2024-10-24 01:41:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:41:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-24 01:41:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:20,784 INFO L225 Difference]: With dead ends: 16429 [2024-10-24 01:41:20,784 INFO L226 Difference]: Without dead ends: 13331 [2024-10-24 01:41:20,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:41:20,793 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1288 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:20,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 376 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:41:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13331 states. [2024-10-24 01:41:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13331 to 6389. [2024-10-24 01:41:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 6388 states have (on average 1.439261114589856) internal successors, (9194), 6388 states have internal predecessors, (9194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 9194 transitions. [2024-10-24 01:41:20,997 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 9194 transitions. Word has length 58 [2024-10-24 01:41:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:20,998 INFO L471 AbstractCegarLoop]: Abstraction has 6389 states and 9194 transitions. [2024-10-24 01:41:20,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 9194 transitions. [2024-10-24 01:41:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 01:41:21,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:21,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:21,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:41:21,002 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:21,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash 363659370, now seen corresponding path program 1 times [2024-10-24 01:41:21,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:21,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742947930] [2024-10-24 01:41:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:21,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:21,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:21,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742947930] [2024-10-24 01:41:21,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742947930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:21,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:21,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:41:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911289004] [2024-10-24 01:41:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:21,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:41:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:41:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:41:21,133 INFO L87 Difference]: Start difference. First operand 6389 states and 9194 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:21,528 INFO L93 Difference]: Finished difference Result 19082 states and 27325 transitions. [2024-10-24 01:41:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:41:21,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-24 01:41:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:21,555 INFO L225 Difference]: With dead ends: 19082 [2024-10-24 01:41:21,555 INFO L226 Difference]: Without dead ends: 15984 [2024-10-24 01:41:21,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:41:21,562 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 1445 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:21,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 387 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:41:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15984 states. [2024-10-24 01:41:21,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15984 to 6445. [2024-10-24 01:41:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 6444 states have (on average 1.4374612042209807) internal successors, (9263), 6444 states have internal predecessors, (9263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 9263 transitions. [2024-10-24 01:41:21,727 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 9263 transitions. Word has length 58 [2024-10-24 01:41:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:21,727 INFO L471 AbstractCegarLoop]: Abstraction has 6445 states and 9263 transitions. [2024-10-24 01:41:21,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 9263 transitions. [2024-10-24 01:41:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 01:41:21,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:21,731 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:21,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:41:21,732 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:21,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 13401980, now seen corresponding path program 1 times [2024-10-24 01:41:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:21,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234427192] [2024-10-24 01:41:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:21,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:22,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234427192] [2024-10-24 01:41:22,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234427192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:22,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:22,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:41:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85395227] [2024-10-24 01:41:22,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:22,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:41:22,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:41:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:41:22,112 INFO L87 Difference]: Start difference. First operand 6445 states and 9263 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:22,760 INFO L93 Difference]: Finished difference Result 15298 states and 22048 transitions. [2024-10-24 01:41:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:41:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 01:41:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:22,779 INFO L225 Difference]: With dead ends: 15298 [2024-10-24 01:41:22,779 INFO L226 Difference]: Without dead ends: 10108 [2024-10-24 01:41:22,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-10-24 01:41:22,788 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 952 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:22,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 753 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:41:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2024-10-24 01:41:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 6317. [2024-10-24 01:41:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 6316 states have (on average 1.4344521849271692) internal successors, (9060), 6316 states have internal predecessors, (9060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9060 transitions. [2024-10-24 01:41:22,904 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9060 transitions. Word has length 60 [2024-10-24 01:41:22,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:22,905 INFO L471 AbstractCegarLoop]: Abstraction has 6317 states and 9060 transitions. [2024-10-24 01:41:22,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:22,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9060 transitions. [2024-10-24 01:41:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 01:41:22,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:22,911 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:22,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:41:22,911 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:22,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash -838199171, now seen corresponding path program 1 times [2024-10-24 01:41:22,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:22,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307134451] [2024-10-24 01:41:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:23,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:23,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307134451] [2024-10-24 01:41:23,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307134451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:23,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:41:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525283198] [2024-10-24 01:41:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:23,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:41:23,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:41:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:41:23,242 INFO L87 Difference]: Start difference. First operand 6317 states and 9060 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:23,919 INFO L93 Difference]: Finished difference Result 15338 states and 22037 transitions. [2024-10-24 01:41:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:41:23,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 01:41:23,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:23,942 INFO L225 Difference]: With dead ends: 15338 [2024-10-24 01:41:23,943 INFO L226 Difference]: Without dead ends: 10064 [2024-10-24 01:41:23,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-10-24 01:41:23,954 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 985 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:23,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 719 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 01:41:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2024-10-24 01:41:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 6128. [2024-10-24 01:41:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6128 states, 6127 states have (on average 1.432022196833687) internal successors, (8774), 6127 states have internal predecessors, (8774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 8774 transitions. [2024-10-24 01:41:24,142 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 8774 transitions. Word has length 60 [2024-10-24 01:41:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:24,142 INFO L471 AbstractCegarLoop]: Abstraction has 6128 states and 8774 transitions. [2024-10-24 01:41:24,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 8774 transitions. [2024-10-24 01:41:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 01:41:24,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:24,147 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:24,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:41:24,147 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:24,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1719999038, now seen corresponding path program 1 times [2024-10-24 01:41:24,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:24,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555530984] [2024-10-24 01:41:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555530984] [2024-10-24 01:41:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555530984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:24,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:41:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665601068] [2024-10-24 01:41:24,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:24,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:41:24,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:41:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:41:24,535 INFO L87 Difference]: Start difference. First operand 6128 states and 8774 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:25,133 INFO L93 Difference]: Finished difference Result 14936 states and 21486 transitions. [2024-10-24 01:41:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 01:41:25,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 01:41:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:25,147 INFO L225 Difference]: With dead ends: 14936 [2024-10-24 01:41:25,148 INFO L226 Difference]: Without dead ends: 9718 [2024-10-24 01:41:25,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-24 01:41:25,158 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 630 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:25,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 962 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:41:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9718 states. [2024-10-24 01:41:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9718 to 5979. [2024-10-24 01:41:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5979 states, 5978 states have (on average 1.432418869187019) internal successors, (8563), 5978 states have internal predecessors, (8563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 8563 transitions. [2024-10-24 01:41:25,326 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 8563 transitions. Word has length 60 [2024-10-24 01:41:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:25,326 INFO L471 AbstractCegarLoop]: Abstraction has 5979 states and 8563 transitions. [2024-10-24 01:41:25,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 8563 transitions. [2024-10-24 01:41:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:41:25,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:25,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:25,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:41:25,330 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:25,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash 677385480, now seen corresponding path program 1 times [2024-10-24 01:41:25,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:25,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184130908] [2024-10-24 01:41:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:25,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:25,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:25,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184130908] [2024-10-24 01:41:25,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184130908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:25,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:25,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436818077] [2024-10-24 01:41:25,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:25,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:25,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:25,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:25,396 INFO L87 Difference]: Start difference. First operand 5979 states and 8563 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:25,434 INFO L93 Difference]: Finished difference Result 9026 states and 12936 transitions. [2024-10-24 01:41:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:25,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:41:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:25,443 INFO L225 Difference]: With dead ends: 9026 [2024-10-24 01:41:25,443 INFO L226 Difference]: Without dead ends: 5796 [2024-10-24 01:41:25,448 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 [2024-10-24 01:41:25,449 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 150 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:25,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 524 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5796 states. [2024-10-24 01:41:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5796 to 5794. [2024-10-24 01:41:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5793 states have (on average 1.4127395132055929) internal successors, (8184), 5793 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 8184 transitions. [2024-10-24 01:41:25,531 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 8184 transitions. Word has length 61 [2024-10-24 01:41:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:25,532 INFO L471 AbstractCegarLoop]: Abstraction has 5794 states and 8184 transitions. [2024-10-24 01:41:25,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 8184 transitions. [2024-10-24 01:41:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:41:25,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:25,535 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:25,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:41:25,535 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:25,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:25,536 INFO L85 PathProgramCache]: Analyzing trace with hash 732531518, now seen corresponding path program 1 times [2024-10-24 01:41:25,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:25,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495556178] [2024-10-24 01:41:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:25,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:25,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495556178] [2024-10-24 01:41:25,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495556178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:25,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:25,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653525655] [2024-10-24 01:41:25,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:25,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:25,603 INFO L87 Difference]: Start difference. First operand 5794 states and 8184 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:25,637 INFO L93 Difference]: Finished difference Result 8078 states and 11407 transitions. [2024-10-24 01:41:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:25,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:41:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:25,645 INFO L225 Difference]: With dead ends: 8078 [2024-10-24 01:41:25,646 INFO L226 Difference]: Without dead ends: 5013 [2024-10-24 01:41:25,651 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 [2024-10-24 01:41:25,652 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 136 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:25,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 513 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2024-10-24 01:41:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5011. [2024-10-24 01:41:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 1.3884231536926148) internal successors, (6956), 5010 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 6956 transitions. [2024-10-24 01:41:25,717 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 6956 transitions. Word has length 61 [2024-10-24 01:41:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:25,717 INFO L471 AbstractCegarLoop]: Abstraction has 5011 states and 6956 transitions. [2024-10-24 01:41:25,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 6956 transitions. [2024-10-24 01:41:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:41:25,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:25,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:25,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:41:25,720 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:25,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash 373087203, now seen corresponding path program 1 times [2024-10-24 01:41:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:25,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490456188] [2024-10-24 01:41:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:25,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:25,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490456188] [2024-10-24 01:41:25,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490456188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:25,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:25,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:25,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733465510] [2024-10-24 01:41:25,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:25,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:25,786 INFO L87 Difference]: Start difference. First operand 5011 states and 6956 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:25,817 INFO L93 Difference]: Finished difference Result 6613 states and 9182 transitions. [2024-10-24 01:41:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:25,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:41:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:25,823 INFO L225 Difference]: With dead ends: 6613 [2024-10-24 01:41:25,823 INFO L226 Difference]: Without dead ends: 3857 [2024-10-24 01:41:25,827 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 [2024-10-24 01:41:25,828 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 148 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:25,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 524 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2024-10-24 01:41:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 3855. [2024-10-24 01:41:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3854 states have (on average 1.3645563051375194) internal successors, (5259), 3854 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 5259 transitions. [2024-10-24 01:41:25,879 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 5259 transitions. Word has length 61 [2024-10-24 01:41:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:25,879 INFO L471 AbstractCegarLoop]: Abstraction has 3855 states and 5259 transitions. [2024-10-24 01:41:25,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 5259 transitions. [2024-10-24 01:41:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:41:25,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:25,882 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:25,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:41:25,883 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:25,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash 447474579, now seen corresponding path program 1 times [2024-10-24 01:41:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416823850] [2024-10-24 01:41:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:25,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416823850] [2024-10-24 01:41:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416823850] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:25,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762937540] [2024-10-24 01:41:25,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:25,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:25,951 INFO L87 Difference]: Start difference. First operand 3855 states and 5259 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:26,001 INFO L93 Difference]: Finished difference Result 7098 states and 9746 transitions. [2024-10-24 01:41:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:41:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:26,008 INFO L225 Difference]: With dead ends: 7098 [2024-10-24 01:41:26,008 INFO L226 Difference]: Without dead ends: 5179 [2024-10-24 01:41:26,012 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 [2024-10-24 01:41:26,012 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:26,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 344 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2024-10-24 01:41:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 3666. [2024-10-24 01:41:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3665 states have (on average 1.3639836289222373) internal successors, (4999), 3665 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4999 transitions. [2024-10-24 01:41:26,064 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4999 transitions. Word has length 62 [2024-10-24 01:41:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:26,064 INFO L471 AbstractCegarLoop]: Abstraction has 3666 states and 4999 transitions. [2024-10-24 01:41:26,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4999 transitions. [2024-10-24 01:41:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:41:26,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:26,069 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:26,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:41:26,070 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:26,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1495299694, now seen corresponding path program 1 times [2024-10-24 01:41:26,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:26,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138810426] [2024-10-24 01:41:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:27,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138810426] [2024-10-24 01:41:27,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138810426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:27,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:27,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-10-24 01:41:27,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628530819] [2024-10-24 01:41:27,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:27,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 01:41:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:27,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 01:41:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2024-10-24 01:41:27,369 INFO L87 Difference]: Start difference. First operand 3666 states and 4999 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:30,219 INFO L93 Difference]: Finished difference Result 6917 states and 9486 transitions. [2024-10-24 01:41:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 01:41:30,220 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:41:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:30,227 INFO L225 Difference]: With dead ends: 6917 [2024-10-24 01:41:30,228 INFO L226 Difference]: Without dead ends: 6850 [2024-10-24 01:41:30,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2024-10-24 01:41:30,230 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 1469 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:30,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 4112 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-24 01:41:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6850 states. [2024-10-24 01:41:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6850 to 3678. [2024-10-24 01:41:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 1.363611639923851) internal successors, (5014), 3677 states have internal predecessors, (5014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 5014 transitions. [2024-10-24 01:41:30,293 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 5014 transitions. Word has length 62 [2024-10-24 01:41:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:30,293 INFO L471 AbstractCegarLoop]: Abstraction has 3678 states and 5014 transitions. [2024-10-24 01:41:30,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 5014 transitions. [2024-10-24 01:41:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:41:30,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:30,299 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:41:30,299 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:30,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash 520655926, now seen corresponding path program 1 times [2024-10-24 01:41:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:30,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335586279] [2024-10-24 01:41:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:30,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:30,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:30,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335586279] [2024-10-24 01:41:30,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335586279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:30,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:30,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 01:41:30,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414262269] [2024-10-24 01:41:30,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:30,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 01:41:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 01:41:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:41:30,967 INFO L87 Difference]: Start difference. First operand 3678 states and 5014 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:31,735 INFO L93 Difference]: Finished difference Result 5720 states and 7840 transitions. [2024-10-24 01:41:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 01:41:31,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:41:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:31,740 INFO L225 Difference]: With dead ends: 5720 [2024-10-24 01:41:31,740 INFO L226 Difference]: Without dead ends: 5373 [2024-10-24 01:41:31,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-10-24 01:41:31,741 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 1282 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:31,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1867 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:41:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2024-10-24 01:41:31,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 3613. [2024-10-24 01:41:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.3640642303433002) internal successors, (4927), 3612 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4927 transitions. [2024-10-24 01:41:31,783 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4927 transitions. Word has length 62 [2024-10-24 01:41:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:31,783 INFO L471 AbstractCegarLoop]: Abstraction has 3613 states and 4927 transitions. [2024-10-24 01:41:31,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4927 transitions. [2024-10-24 01:41:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:41:31,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:31,786 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:31,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:41:31,786 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:31,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1838411058, now seen corresponding path program 1 times [2024-10-24 01:41:31,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:31,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056679397] [2024-10-24 01:41:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:32,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056679397] [2024-10-24 01:41:32,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056679397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:32,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:32,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-10-24 01:41:32,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466840260] [2024-10-24 01:41:32,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:32,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 01:41:32,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:32,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 01:41:32,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2024-10-24 01:41:32,849 INFO L87 Difference]: Start difference. First operand 3613 states and 4927 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:35,233 INFO L93 Difference]: Finished difference Result 6787 states and 9308 transitions. [2024-10-24 01:41:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 01:41:35,233 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:41:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:35,240 INFO L225 Difference]: With dead ends: 6787 [2024-10-24 01:41:35,240 INFO L226 Difference]: Without dead ends: 6720 [2024-10-24 01:41:35,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=288, Invalid=1352, Unknown=0, NotChecked=0, Total=1640 [2024-10-24 01:41:35,243 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 1422 mSDsluCounter, 3665 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:35,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 3938 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 01:41:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2024-10-24 01:41:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 3619. [2024-10-24 01:41:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 3618 states have (on average 1.3637368711995577) internal successors, (4934), 3618 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 4934 transitions. [2024-10-24 01:41:35,294 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 4934 transitions. Word has length 62 [2024-10-24 01:41:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:35,295 INFO L471 AbstractCegarLoop]: Abstraction has 3619 states and 4934 transitions. [2024-10-24 01:41:35,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 4934 transitions. [2024-10-24 01:41:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:41:35,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:35,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:35,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 01:41:35,298 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:35,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash 776629485, now seen corresponding path program 1 times [2024-10-24 01:41:35,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611503436] [2024-10-24 01:41:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:35,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:35,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:35,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611503436] [2024-10-24 01:41:35,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611503436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:35,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:35,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:35,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766352196] [2024-10-24 01:41:35,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:35,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:35,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:35,338 INFO L87 Difference]: Start difference. First operand 3619 states and 4934 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:35,388 INFO L93 Difference]: Finished difference Result 6695 states and 9191 transitions. [2024-10-24 01:41:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:41:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:35,394 INFO L225 Difference]: With dead ends: 6695 [2024-10-24 01:41:35,394 INFO L226 Difference]: Without dead ends: 4879 [2024-10-24 01:41:35,397 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 [2024-10-24 01:41:35,398 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 175 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:35,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 344 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:35,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2024-10-24 01:41:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 3411. [2024-10-24 01:41:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 3410 states have (on average 1.3636363636363635) internal successors, (4650), 3410 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 4650 transitions. [2024-10-24 01:41:35,446 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 4650 transitions. Word has length 62 [2024-10-24 01:41:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:35,446 INFO L471 AbstractCegarLoop]: Abstraction has 3411 states and 4650 transitions. [2024-10-24 01:41:35,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 4650 transitions. [2024-10-24 01:41:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:41:35,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:35,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:35,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 01:41:35,449 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:35,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:35,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1592976839, now seen corresponding path program 1 times [2024-10-24 01:41:35,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:35,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109737886] [2024-10-24 01:41:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:35,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109737886] [2024-10-24 01:41:35,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109737886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:35,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:35,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801475546] [2024-10-24 01:41:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:35,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:35,488 INFO L87 Difference]: Start difference. First operand 3411 states and 4650 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:35,553 INFO L93 Difference]: Finished difference Result 6344 states and 8701 transitions. [2024-10-24 01:41:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:35,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:41:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:35,559 INFO L225 Difference]: With dead ends: 6344 [2024-10-24 01:41:35,559 INFO L226 Difference]: Without dead ends: 4550 [2024-10-24 01:41:35,562 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 [2024-10-24 01:41:35,563 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 167 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:35,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 319 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2024-10-24 01:41:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 3194. [2024-10-24 01:41:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3193 states have (on average 1.362981522079549) internal successors, (4352), 3193 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4352 transitions. [2024-10-24 01:41:35,605 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4352 transitions. Word has length 62 [2024-10-24 01:41:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:35,605 INFO L471 AbstractCegarLoop]: Abstraction has 3194 states and 4352 transitions. [2024-10-24 01:41:35,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4352 transitions. [2024-10-24 01:41:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:41:35,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:35,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:35,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 01:41:35,608 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:35,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -4191119, now seen corresponding path program 1 times [2024-10-24 01:41:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953618649] [2024-10-24 01:41:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:36,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953618649] [2024-10-24 01:41:36,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953618649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:36,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:36,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-10-24 01:41:36,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342221403] [2024-10-24 01:41:36,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:36,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 01:41:36,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 01:41:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-10-24 01:41:36,547 INFO L87 Difference]: Start difference. First operand 3194 states and 4352 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:38,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:38,510 INFO L93 Difference]: Finished difference Result 7048 states and 9662 transitions. [2024-10-24 01:41:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 01:41:38,511 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-24 01:41:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:38,520 INFO L225 Difference]: With dead ends: 7048 [2024-10-24 01:41:38,520 INFO L226 Difference]: Without dead ends: 6916 [2024-10-24 01:41:38,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2024-10-24 01:41:38,524 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 1558 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:38,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 3370 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 01:41:38,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2024-10-24 01:41:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 3177. [2024-10-24 01:41:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 3176 states have (on average 1.362405541561713) internal successors, (4327), 3176 states have internal predecessors, (4327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 4327 transitions. [2024-10-24 01:41:38,576 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 4327 transitions. Word has length 63 [2024-10-24 01:41:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:38,576 INFO L471 AbstractCegarLoop]: Abstraction has 3177 states and 4327 transitions. [2024-10-24 01:41:38,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 4327 transitions. [2024-10-24 01:41:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 01:41:38,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:38,579 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:38,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 01:41:38,579 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:38,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1504815385, now seen corresponding path program 1 times [2024-10-24 01:41:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:38,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802492262] [2024-10-24 01:41:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:38,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:38,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802492262] [2024-10-24 01:41:38,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802492262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:38,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:41:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592192751] [2024-10-24 01:41:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:38,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:41:38,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:41:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:38,746 INFO L87 Difference]: Start difference. First operand 3177 states and 4327 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:38,805 INFO L93 Difference]: Finished difference Result 3183 states and 4330 transitions. [2024-10-24 01:41:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:41:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 01:41:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:38,809 INFO L225 Difference]: With dead ends: 3183 [2024-10-24 01:41:38,809 INFO L226 Difference]: Without dead ends: 2740 [2024-10-24 01:41:38,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:41:38,811 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 471 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:38,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 614 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2024-10-24 01:41:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2736. [2024-10-24 01:41:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2735 states have (on average 1.3652650822669103) internal successors, (3734), 2735 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3734 transitions. [2024-10-24 01:41:38,838 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3734 transitions. Word has length 66 [2024-10-24 01:41:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:38,839 INFO L471 AbstractCegarLoop]: Abstraction has 2736 states and 3734 transitions. [2024-10-24 01:41:38,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3734 transitions. [2024-10-24 01:41:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:41:38,841 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:38,841 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:38,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 01:41:38,842 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:38,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:38,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1123021877, now seen corresponding path program 1 times [2024-10-24 01:41:38,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:38,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112605945] [2024-10-24 01:41:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:38,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:38,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:38,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112605945] [2024-10-24 01:41:38,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112605945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:38,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:38,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:38,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424512313] [2024-10-24 01:41:38,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:38,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:38,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:38,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:38,931 INFO L87 Difference]: Start difference. First operand 2736 states and 3734 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:38,959 INFO L93 Difference]: Finished difference Result 7013 states and 9672 transitions. [2024-10-24 01:41:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 01:41:38,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:38,965 INFO L225 Difference]: With dead ends: 7013 [2024-10-24 01:41:38,965 INFO L226 Difference]: Without dead ends: 4772 [2024-10-24 01:41:38,968 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 [2024-10-24 01:41:38,969 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 118 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:38,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 429 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2024-10-24 01:41:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4476. [2024-10-24 01:41:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 1.3702793296089386) internal successors, (6132), 4475 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6132 transitions. [2024-10-24 01:41:39,021 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6132 transitions. Word has length 69 [2024-10-24 01:41:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:39,022 INFO L471 AbstractCegarLoop]: Abstraction has 4476 states and 6132 transitions. [2024-10-24 01:41:39,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6132 transitions. [2024-10-24 01:41:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 01:41:39,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:39,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:39,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-24 01:41:39,025 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:39,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1728540681, now seen corresponding path program 1 times [2024-10-24 01:41:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167899159] [2024-10-24 01:41:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:39,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167899159] [2024-10-24 01:41:39,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167899159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:39,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:39,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576575433] [2024-10-24 01:41:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:39,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:39,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:39,124 INFO L87 Difference]: Start difference. First operand 4476 states and 6132 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:39,159 INFO L93 Difference]: Finished difference Result 12028 states and 16550 transitions. [2024-10-24 01:41:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:39,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 01:41:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:39,170 INFO L225 Difference]: With dead ends: 12028 [2024-10-24 01:41:39,171 INFO L226 Difference]: Without dead ends: 8047 [2024-10-24 01:41:39,177 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 [2024-10-24 01:41:39,181 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 107 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:39,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 421 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8047 states. [2024-10-24 01:41:39,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8047 to 7457. [2024-10-24 01:41:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7457 states, 7456 states have (on average 1.3680257510729614) internal successors, (10200), 7456 states have internal predecessors, (10200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7457 states to 7457 states and 10200 transitions. [2024-10-24 01:41:39,279 INFO L78 Accepts]: Start accepts. Automaton has 7457 states and 10200 transitions. Word has length 70 [2024-10-24 01:41:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:39,280 INFO L471 AbstractCegarLoop]: Abstraction has 7457 states and 10200 transitions. [2024-10-24 01:41:39,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7457 states and 10200 transitions. [2024-10-24 01:41:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:41:39,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:39,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:39,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-24 01:41:39,282 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:39,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash -644807243, now seen corresponding path program 1 times [2024-10-24 01:41:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:39,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002906092] [2024-10-24 01:41:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:39,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:39,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002906092] [2024-10-24 01:41:39,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002906092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:39,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001423087] [2024-10-24 01:41:39,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:39,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:39,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:39,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:39,398 INFO L87 Difference]: Start difference. First operand 7457 states and 10200 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:39,451 INFO L93 Difference]: Finished difference Result 20137 states and 27486 transitions. [2024-10-24 01:41:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:39,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-24 01:41:39,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:39,469 INFO L225 Difference]: With dead ends: 20137 [2024-10-24 01:41:39,469 INFO L226 Difference]: Without dead ends: 13086 [2024-10-24 01:41:39,480 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 [2024-10-24 01:41:39,482 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 112 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:39,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 421 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13086 states. [2024-10-24 01:41:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 11908. [2024-10-24 01:41:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11908 states, 11907 states have (on average 1.351893843957336) internal successors, (16097), 11907 states have internal predecessors, (16097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 16097 transitions. [2024-10-24 01:41:39,629 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 16097 transitions. Word has length 72 [2024-10-24 01:41:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:39,629 INFO L471 AbstractCegarLoop]: Abstraction has 11908 states and 16097 transitions. [2024-10-24 01:41:39,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 16097 transitions. [2024-10-24 01:41:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 01:41:39,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:39,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:39,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-24 01:41:39,632 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:39,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1527500110, now seen corresponding path program 1 times [2024-10-24 01:41:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407736651] [2024-10-24 01:41:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:39,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:39,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407736651] [2024-10-24 01:41:39,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407736651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:39,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:39,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:41:39,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593510483] [2024-10-24 01:41:39,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:39,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:41:39,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:41:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:41:39,847 INFO L87 Difference]: Start difference. First operand 11908 states and 16097 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:39,897 INFO L93 Difference]: Finished difference Result 13182 states and 17794 transitions. [2024-10-24 01:41:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:41:39,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 01:41:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:39,915 INFO L225 Difference]: With dead ends: 13182 [2024-10-24 01:41:39,915 INFO L226 Difference]: Without dead ends: 13180 [2024-10-24 01:41:39,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:41:39,921 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 0 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:39,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 938 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13180 states. [2024-10-24 01:41:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13180 to 13180. [2024-10-24 01:41:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13180 states, 13179 states have (on average 1.3179300402154943) internal successors, (17369), 13179 states have internal predecessors, (17369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13180 states to 13180 states and 17369 transitions. [2024-10-24 01:41:40,078 INFO L78 Accepts]: Start accepts. Automaton has 13180 states and 17369 transitions. Word has length 73 [2024-10-24 01:41:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:40,078 INFO L471 AbstractCegarLoop]: Abstraction has 13180 states and 17369 transitions. [2024-10-24 01:41:40,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states and 17369 transitions. [2024-10-24 01:41:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:41:40,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:40,082 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:40,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-24 01:41:40,082 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:40,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1583760693, now seen corresponding path program 1 times [2024-10-24 01:41:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:40,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459975618] [2024-10-24 01:41:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:40,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459975618] [2024-10-24 01:41:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459975618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:41:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:41:40,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:41:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949542902] [2024-10-24 01:41:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:41:40,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:41:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:41:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:41:40,149 INFO L87 Difference]: Start difference. First operand 13180 states and 17369 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:40,303 INFO L93 Difference]: Finished difference Result 32360 states and 42551 transitions. [2024-10-24 01:41:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:41:40,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:41:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:40,331 INFO L225 Difference]: With dead ends: 32360 [2024-10-24 01:41:40,331 INFO L226 Difference]: Without dead ends: 19586 [2024-10-24 01:41:40,341 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 [2024-10-24 01:41:40,342 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 128 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:40,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 312 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:41:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19586 states. [2024-10-24 01:41:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19586 to 19372. [2024-10-24 01:41:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19372 states, 19371 states have (on average 1.290847142635899) internal successors, (25005), 19371 states have internal predecessors, (25005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19372 states to 19372 states and 25005 transitions. [2024-10-24 01:41:40,647 INFO L78 Accepts]: Start accepts. Automaton has 19372 states and 25005 transitions. Word has length 74 [2024-10-24 01:41:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:40,647 INFO L471 AbstractCegarLoop]: Abstraction has 19372 states and 25005 transitions. [2024-10-24 01:41:40,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:40,648 INFO L276 IsEmpty]: Start isEmpty. Operand 19372 states and 25005 transitions. [2024-10-24 01:41:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:41:40,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:40,654 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:40,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-24 01:41:40,654 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:40,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1684095917, now seen corresponding path program 1 times [2024-10-24 01:41:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:40,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533452045] [2024-10-24 01:41:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:40,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:40,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533452045] [2024-10-24 01:41:40,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533452045] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:41:40,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192863879] [2024-10-24 01:41:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:40,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:41:40,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:41:40,993 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) [2024-10-24 01:41:40,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:41:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:41,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 01:41:41,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:41:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:42,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:41:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192863879] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:41:43,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:41:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 29 [2024-10-24 01:41:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216399518] [2024-10-24 01:41:43,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:41:43,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 01:41:43,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:43,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 01:41:43,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-10-24 01:41:43,443 INFO L87 Difference]: Start difference. First operand 19372 states and 25005 transitions. Second operand has 30 states, 30 states have (on average 7.766666666666667) internal successors, (233), 29 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:41:55,709 INFO L93 Difference]: Finished difference Result 157040 states and 199374 transitions. [2024-10-24 01:41:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-10-24 01:41:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.766666666666667) internal successors, (233), 29 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-24 01:41:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:41:55,915 INFO L225 Difference]: With dead ends: 157040 [2024-10-24 01:41:55,915 INFO L226 Difference]: Without dead ends: 146498 [2024-10-24 01:41:55,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13694 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=5910, Invalid=31920, Unknown=0, NotChecked=0, Total=37830 [2024-10-24 01:41:55,946 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 6013 mSDsluCounter, 7897 mSDsCounter, 0 mSdLazyCounter, 7857 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6013 SdHoareTripleChecker+Valid, 8323 SdHoareTripleChecker+Invalid, 7933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 7857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:41:55,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6013 Valid, 8323 Invalid, 7933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 7857 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-10-24 01:41:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146498 states. [2024-10-24 01:41:56,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146498 to 19962. [2024-10-24 01:41:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19962 states, 19961 states have (on average 1.289163869545614) internal successors, (25733), 19961 states have internal predecessors, (25733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19962 states to 19962 states and 25733 transitions. [2024-10-24 01:41:57,015 INFO L78 Accepts]: Start accepts. Automaton has 19962 states and 25733 transitions. Word has length 93 [2024-10-24 01:41:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:41:57,015 INFO L471 AbstractCegarLoop]: Abstraction has 19962 states and 25733 transitions. [2024-10-24 01:41:57,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.766666666666667) internal successors, (233), 29 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:41:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 19962 states and 25733 transitions. [2024-10-24 01:41:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:41:57,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:41:57,023 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:41:57,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:41:57,223 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,SelfDestructingSolverStorable32 [2024-10-24 01:41:57,224 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:41:57,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:41:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash -195123861, now seen corresponding path program 1 times [2024-10-24 01:41:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:41:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202621145] [2024-10-24 01:41:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:41:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:57,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:41:57,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202621145] [2024-10-24 01:41:57,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202621145] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:41:57,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149643064] [2024-10-24 01:41:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:41:57,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:41:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:41:57,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:41:57,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:41:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:41:57,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 01:41:57,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:41:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:58,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:41:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:41:59,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149643064] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:41:59,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:41:59,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 30 [2024-10-24 01:41:59,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629910916] [2024-10-24 01:41:59,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:41:59,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 01:41:59,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:41:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 01:41:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-10-24 01:41:59,844 INFO L87 Difference]: Start difference. First operand 19962 states and 25733 transitions. Second operand has 31 states, 31 states have (on average 7.806451612903226) internal successors, (242), 30 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:13,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:42:13,402 INFO L93 Difference]: Finished difference Result 143861 states and 182930 transitions. [2024-10-24 01:42:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2024-10-24 01:42:13,403 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.806451612903226) internal successors, (242), 30 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-24 01:42:13,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:42:13,593 INFO L225 Difference]: With dead ends: 143861 [2024-10-24 01:42:13,593 INFO L226 Difference]: Without dead ends: 133271 [2024-10-24 01:42:13,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24200 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=9200, Invalid=50580, Unknown=0, NotChecked=0, Total=59780 [2024-10-24 01:42:13,618 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 5145 mSDsluCounter, 6123 mSDsCounter, 0 mSdLazyCounter, 6319 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5145 SdHoareTripleChecker+Valid, 6474 SdHoareTripleChecker+Invalid, 6410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 6319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:42:13,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5145 Valid, 6474 Invalid, 6410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 6319 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-24 01:42:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133271 states. [2024-10-24 01:42:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133271 to 42866. [2024-10-24 01:42:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42866 states, 42865 states have (on average 1.2899568412457716) internal successors, (55294), 42865 states have internal predecessors, (55294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42866 states to 42866 states and 55294 transitions. [2024-10-24 01:42:14,695 INFO L78 Accepts]: Start accepts. Automaton has 42866 states and 55294 transitions. Word has length 93 [2024-10-24 01:42:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:42:14,696 INFO L471 AbstractCegarLoop]: Abstraction has 42866 states and 55294 transitions. [2024-10-24 01:42:14,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.806451612903226) internal successors, (242), 30 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 42866 states and 55294 transitions. [2024-10-24 01:42:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:42:14,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:42:14,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:42:14,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 01:42:14,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-24 01:42:14,905 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:42:14,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:42:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash 939129145, now seen corresponding path program 1 times [2024-10-24 01:42:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:42:14,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761144254] [2024-10-24 01:42:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:42:14,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:42:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:42:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:42:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:42:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761144254] [2024-10-24 01:42:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761144254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:42:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:42:15,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:42:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471712286] [2024-10-24 01:42:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:42:15,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:42:15,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:42:15,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:42:15,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:42:15,151 INFO L87 Difference]: Start difference. First operand 42866 states and 55294 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:42:15,843 INFO L93 Difference]: Finished difference Result 90484 states and 116311 transitions. [2024-10-24 01:42:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 01:42:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-24 01:42:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:42:15,924 INFO L225 Difference]: With dead ends: 90484 [2024-10-24 01:42:15,924 INFO L226 Difference]: Without dead ends: 72693 [2024-10-24 01:42:15,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-10-24 01:42:15,959 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 546 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:42:15,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 790 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:42:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72693 states. [2024-10-24 01:42:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72693 to 63452. [2024-10-24 01:42:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63452 states, 63451 states have (on average 1.2893256213456052) internal successors, (81809), 63451 states have internal predecessors, (81809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63452 states to 63452 states and 81809 transitions. [2024-10-24 01:42:17,017 INFO L78 Accepts]: Start accepts. Automaton has 63452 states and 81809 transitions. Word has length 93 [2024-10-24 01:42:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:42:17,017 INFO L471 AbstractCegarLoop]: Abstraction has 63452 states and 81809 transitions. [2024-10-24 01:42:17,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 63452 states and 81809 transitions. [2024-10-24 01:42:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 01:42:17,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:42:17,029 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:42:17,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-24 01:42:17,029 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:42:17,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:42:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash 117499966, now seen corresponding path program 1 times [2024-10-24 01:42:17,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:42:17,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494195642] [2024-10-24 01:42:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:42:17,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:42:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:42:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:42:17,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:42:17,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494195642] [2024-10-24 01:42:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494195642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:42:17,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:42:17,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:42:17,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585448084] [2024-10-24 01:42:17,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:42:17,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:42:17,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:42:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:42:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:42:17,095 INFO L87 Difference]: Start difference. First operand 63452 states and 81809 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:42:17,887 INFO L93 Difference]: Finished difference Result 124637 states and 161029 transitions. [2024-10-24 01:42:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:42:17,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-24 01:42:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:42:18,026 INFO L225 Difference]: With dead ends: 124637 [2024-10-24 01:42:18,026 INFO L226 Difference]: Without dead ends: 62803 [2024-10-24 01:42:18,051 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 [2024-10-24 01:42:18,051 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 155 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:42:18,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 195 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:42:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62803 states. [2024-10-24 01:42:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62803 to 62803. [2024-10-24 01:42:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62803 states, 62802 states have (on average 1.2770453170281202) internal successors, (80201), 62802 states have internal predecessors, (80201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62803 states to 62803 states and 80201 transitions. [2024-10-24 01:42:18,830 INFO L78 Accepts]: Start accepts. Automaton has 62803 states and 80201 transitions. Word has length 94 [2024-10-24 01:42:18,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:42:18,831 INFO L471 AbstractCegarLoop]: Abstraction has 62803 states and 80201 transitions. [2024-10-24 01:42:18,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 62803 states and 80201 transitions. [2024-10-24 01:42:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 01:42:18,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:42:18,842 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:42:18,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-24 01:42:18,842 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:42:18,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:42:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1857546055, now seen corresponding path program 1 times [2024-10-24 01:42:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:42:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924705948] [2024-10-24 01:42:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:42:18,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:42:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:42:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:42:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:42:19,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924705948] [2024-10-24 01:42:19,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924705948] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:42:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102289160] [2024-10-24 01:42:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:42:19,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:42:19,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:42:19,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:42:19,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:42:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:42:19,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 01:42:19,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:42:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:42:19,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:42:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:42:19,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102289160] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:42:19,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:42:19,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-24 01:42:19,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135247699] [2024-10-24 01:42:19,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:42:19,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:42:19,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:42:19,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:42:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:42:19,715 INFO L87 Difference]: Start difference. First operand 62803 states and 80201 transitions. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:42:20,502 INFO L93 Difference]: Finished difference Result 181169 states and 229848 transitions. [2024-10-24 01:42:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:42:20,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-24 01:42:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:42:20,681 INFO L225 Difference]: With dead ends: 181169 [2024-10-24 01:42:20,681 INFO L226 Difference]: Without dead ends: 120150 [2024-10-24 01:42:20,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:42:20,704 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 246 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:42:20,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1178 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:42:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120150 states. [2024-10-24 01:42:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120150 to 94231. [2024-10-24 01:42:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94231 states, 94230 states have (on average 1.2708691499522444) internal successors, (119754), 94230 states have internal predecessors, (119754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94231 states to 94231 states and 119754 transitions. [2024-10-24 01:42:22,369 INFO L78 Accepts]: Start accepts. Automaton has 94231 states and 119754 transitions. Word has length 94 [2024-10-24 01:42:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:42:22,369 INFO L471 AbstractCegarLoop]: Abstraction has 94231 states and 119754 transitions. [2024-10-24 01:42:22,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 94231 states and 119754 transitions. [2024-10-24 01:42:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-24 01:42:22,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:42:22,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:42:22,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 01:42:22,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:42:22,586 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:42:22,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:42:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 246321477, now seen corresponding path program 1 times [2024-10-24 01:42:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:42:22,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896337627] [2024-10-24 01:42:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:42:22,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:42:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:42:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 01:42:22,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:42:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896337627] [2024-10-24 01:42:22,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896337627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:42:22,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:42:22,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:42:22,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367116576] [2024-10-24 01:42:22,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:42:22,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:42:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:42:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:42:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:42:22,682 INFO L87 Difference]: Start difference. First operand 94231 states and 119754 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:42:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:42:23,222 INFO L93 Difference]: Finished difference Result 173808 states and 221268 transitions. [2024-10-24 01:42:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:42:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-10-24 01:42:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted.