./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/eca-rers2012/Problem03_label51.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 74edf29578da59b17de672f50e10ed8f88a3850b8ffae9884ae020db50745360 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:48:31,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:48:31,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:48:31,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:48:31,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:48:31,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:48:31,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:48:31,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:48:31,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:48:31,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:48:31,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:48:31,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:48:31,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:48:31,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:48:31,270 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:48:31,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:48:31,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:48:31,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:48:31,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:48:31,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:48:31,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:48:31,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:48:31,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:48:31,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:48:31,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:48:31,274 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:48:31,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:48:31,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:48:31,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:48:31,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:48:31,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:48:31,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:48:31,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:48:31,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:48:31,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:48:31,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:48:31,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:48:31,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:48:31,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:48:31,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:48:31,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:48:31,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:48:31,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74edf29578da59b17de672f50e10ed8f88a3850b8ffae9884ae020db50745360 [2024-10-13 22:48:31,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:48:31,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:48:31,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:48:31,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:48:31,478 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:48:31,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c [2024-10-13 22:48:32,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:48:33,055 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:48:33,055 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c [2024-10-13 22:48:33,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee4f842c/69d444eb4ed146608c766ab01d15433e/FLAG9e53eb93e [2024-10-13 22:48:33,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee4f842c/69d444eb4ed146608c766ab01d15433e [2024-10-13 22:48:33,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:48:33,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:48:33,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:48:33,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:48:33,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:48:33,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:48:33" (1/1) ... [2024-10-13 22:48:33,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3522f42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:33, skipping insertion in model container [2024-10-13 22:48:33,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:48:33" (1/1) ... [2024-10-13 22:48:33,417 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:48:33,804 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/eca-rers2012/Problem03_label51.c[59610,59623] [2024-10-13 22:48:33,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:48:33,846 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:48:33,982 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/eca-rers2012/Problem03_label51.c[59610,59623] [2024-10-13 22:48:33,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:48:34,008 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:48:34,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34 WrapperNode [2024-10-13 22:48:34,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:48:34,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:48:34,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:48:34,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:48:34,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,201 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-13 22:48:34,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:48:34,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:48:34,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:48:34,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:48:34,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,276 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]. [2024-10-13 22:48:34,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:48:34,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:48:34,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:48:34,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:48:34,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (1/1) ... [2024-10-13 22:48:34,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:48:34,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:34,392 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) [2024-10-13 22:48:34,399 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 [2024-10-13 22:48:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:48:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:48:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:48:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:48:34,520 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:48:34,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:48:36,136 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-13 22:48:36,136 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:48:36,185 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:48:36,185 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 22:48:36,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:48:36 BoogieIcfgContainer [2024-10-13 22:48:36,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:48:36,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:48:36,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:48:36,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:48:36,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:48:33" (1/3) ... [2024-10-13 22:48:36,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d69a3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:48:36, skipping insertion in model container [2024-10-13 22:48:36,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:48:34" (2/3) ... [2024-10-13 22:48:36,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d69a3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:48:36, skipping insertion in model container [2024-10-13 22:48:36,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:48:36" (3/3) ... [2024-10-13 22:48:36,192 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label51.c [2024-10-13 22:48:36,204 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:48:36,204 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:48:36,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:48:36,264 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;@e6342a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:48:36,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:48:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 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) [2024-10-13 22:48:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-13 22:48:36,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:36,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:36,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:36,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1872444927, now seen corresponding path program 1 times [2024-10-13 22:48:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588044546] [2024-10-13 22:48:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:36,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:36,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:36,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588044546] [2024-10-13 22:48:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588044546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:36,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631614416] [2024-10-13 22:48:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:36,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:48:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:48:36,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:48:36,797 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 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 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 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) [2024-10-13 22:48:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:36,847 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-13 22:48:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:48:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 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 187 [2024-10-13 22:48:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:36,863 INFO L225 Difference]: With dead ends: 479 [2024-10-13 22:48:36,864 INFO L226 Difference]: Without dead ends: 238 [2024-10-13 22:48:36,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:48:36,871 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:36,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:48:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-13 22:48:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-13 22:48:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 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) [2024-10-13 22:48:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-13 22:48:36,909 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 187 [2024-10-13 22:48:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:36,910 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-13 22:48:36,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 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) [2024-10-13 22:48:36,911 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-13 22:48:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-13 22:48:36,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:36,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:36,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:48:36,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:36,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1122569840, now seen corresponding path program 1 times [2024-10-13 22:48:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:36,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741457485] [2024-10-13 22:48:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:36,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741457485] [2024-10-13 22:48:37,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741457485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:37,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:37,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:37,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239957791] [2024-10-13 22:48:37,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:37,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:37,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:37,524 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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) [2024-10-13 22:48:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:38,268 INFO L93 Difference]: Finished difference Result 694 states and 1153 transitions. [2024-10-13 22:48:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:38,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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 187 [2024-10-13 22:48:38,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:38,272 INFO L225 Difference]: With dead ends: 694 [2024-10-13 22:48:38,272 INFO L226 Difference]: Without dead ends: 457 [2024-10-13 22:48:38,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:38,273 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 46 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:38,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 105 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:48:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-10-13 22:48:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 446. [2024-10-13 22:48:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.5932584269662922) internal successors, (709), 445 states have internal predecessors, (709), 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) [2024-10-13 22:48:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 709 transitions. [2024-10-13 22:48:38,292 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 709 transitions. Word has length 187 [2024-10-13 22:48:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:38,292 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 709 transitions. [2024-10-13 22:48:38,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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) [2024-10-13 22:48:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 709 transitions. [2024-10-13 22:48:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-13 22:48:38,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:38,295 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:38,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:48:38,296 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:38,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1260485004, now seen corresponding path program 1 times [2024-10-13 22:48:38,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338168400] [2024-10-13 22:48:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:38,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:38,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338168400] [2024-10-13 22:48:38,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338168400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:38,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:38,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:38,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243045368] [2024-10-13 22:48:38,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:38,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:38,523 INFO L87 Difference]: Start difference. First operand 446 states and 709 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2024-10-13 22:48:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:39,155 INFO L93 Difference]: Finished difference Result 1297 states and 2070 transitions. [2024-10-13 22:48:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:39,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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 193 [2024-10-13 22:48:39,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:39,158 INFO L225 Difference]: With dead ends: 1297 [2024-10-13 22:48:39,158 INFO L226 Difference]: Without dead ends: 852 [2024-10-13 22:48:39,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:39,161 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:39,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 190 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-10-13 22:48:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2024-10-13 22:48:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.3877790834312573) internal successors, (1181), 851 states have internal predecessors, (1181), 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) [2024-10-13 22:48:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1181 transitions. [2024-10-13 22:48:39,189 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1181 transitions. Word has length 193 [2024-10-13 22:48:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:39,189 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1181 transitions. [2024-10-13 22:48:39,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2024-10-13 22:48:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1181 transitions. [2024-10-13 22:48:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-10-13 22:48:39,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:39,194 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:39,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 22:48:39,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:39,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:39,195 INFO L85 PathProgramCache]: Analyzing trace with hash 621492304, now seen corresponding path program 1 times [2024-10-13 22:48:39,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:39,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753365984] [2024-10-13 22:48:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:39,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753365984] [2024-10-13 22:48:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753365984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:39,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:39,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364581167] [2024-10-13 22:48:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:39,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:39,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:39,426 INFO L87 Difference]: Start difference. First operand 852 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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) [2024-10-13 22:48:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:40,049 INFO L93 Difference]: Finished difference Result 2534 states and 3512 transitions. [2024-10-13 22:48:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:40,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 200 [2024-10-13 22:48:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:40,054 INFO L225 Difference]: With dead ends: 2534 [2024-10-13 22:48:40,054 INFO L226 Difference]: Without dead ends: 1683 [2024-10-13 22:48:40,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:40,056 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:40,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 220 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2024-10-13 22:48:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1681. [2024-10-13 22:48:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 1.3279761904761904) internal successors, (2231), 1680 states have internal predecessors, (2231), 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) [2024-10-13 22:48:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2231 transitions. [2024-10-13 22:48:40,083 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2231 transitions. Word has length 200 [2024-10-13 22:48:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:40,083 INFO L471 AbstractCegarLoop]: Abstraction has 1681 states and 2231 transitions. [2024-10-13 22:48:40,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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) [2024-10-13 22:48:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2231 transitions. [2024-10-13 22:48:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-13 22:48:40,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:40,089 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:40,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 22:48:40,090 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:40,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:40,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1152943533, now seen corresponding path program 1 times [2024-10-13 22:48:40,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:40,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805906062] [2024-10-13 22:48:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:48:40,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805906062] [2024-10-13 22:48:40,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805906062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:40,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603419313] [2024-10-13 22:48:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:40,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:40,201 INFO L87 Difference]: Start difference. First operand 1681 states and 2231 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-10-13 22:48:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:40,920 INFO L93 Difference]: Finished difference Result 5005 states and 6650 transitions. [2024-10-13 22:48:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:40,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 201 [2024-10-13 22:48:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:40,930 INFO L225 Difference]: With dead ends: 5005 [2024-10-13 22:48:40,930 INFO L226 Difference]: Without dead ends: 3325 [2024-10-13 22:48:40,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:40,933 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:40,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:48:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2024-10-13 22:48:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3309. [2024-10-13 22:48:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.3019951632406288) internal successors, (4307), 3308 states have internal predecessors, (4307), 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) [2024-10-13 22:48:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4307 transitions. [2024-10-13 22:48:40,994 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4307 transitions. Word has length 201 [2024-10-13 22:48:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:40,994 INFO L471 AbstractCegarLoop]: Abstraction has 3309 states and 4307 transitions. [2024-10-13 22:48:40,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-10-13 22:48:40,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4307 transitions. [2024-10-13 22:48:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-10-13 22:48:41,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:41,001 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:41,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 22:48:41,001 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:41,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash 739166786, now seen corresponding path program 1 times [2024-10-13 22:48:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189782910] [2024-10-13 22:48:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:41,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:48:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189782910] [2024-10-13 22:48:41,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189782910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:41,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:41,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:48:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290185717] [2024-10-13 22:48:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:41,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:41,183 INFO L87 Difference]: Start difference. First operand 3309 states and 4307 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-10-13 22:48:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:41,869 INFO L93 Difference]: Finished difference Result 8244 states and 11007 transitions. [2024-10-13 22:48:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:41,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 208 [2024-10-13 22:48:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:41,881 INFO L225 Difference]: With dead ends: 8244 [2024-10-13 22:48:41,882 INFO L226 Difference]: Without dead ends: 4936 [2024-10-13 22:48:41,885 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 [2024-10-13 22:48:41,885 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 233 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:41,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 401 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2024-10-13 22:48:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4934. [2024-10-13 22:48:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 1.2475167241029799) internal successors, (6154), 4933 states have internal predecessors, (6154), 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) [2024-10-13 22:48:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 6154 transitions. [2024-10-13 22:48:41,954 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 6154 transitions. Word has length 208 [2024-10-13 22:48:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:41,955 INFO L471 AbstractCegarLoop]: Abstraction has 4934 states and 6154 transitions. [2024-10-13 22:48:41,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-10-13 22:48:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 6154 transitions. [2024-10-13 22:48:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-13 22:48:41,962 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:41,962 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:41,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 22:48:41,963 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:41,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1550173314, now seen corresponding path program 1 times [2024-10-13 22:48:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132088779] [2024-10-13 22:48:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:41,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:48:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132088779] [2024-10-13 22:48:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132088779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:42,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773665606] [2024-10-13 22:48:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:42,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:42,270 INFO L87 Difference]: Start difference. First operand 4934 states and 6154 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2024-10-13 22:48:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:43,040 INFO L93 Difference]: Finished difference Result 14563 states and 18199 transitions. [2024-10-13 22:48:43,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:43,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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 241 [2024-10-13 22:48:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:43,065 INFO L225 Difference]: With dead ends: 14563 [2024-10-13 22:48:43,065 INFO L226 Difference]: Without dead ends: 9630 [2024-10-13 22:48:43,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:43,073 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 216 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:43,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 194 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:48:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9630 states. [2024-10-13 22:48:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9630 to 9621. [2024-10-13 22:48:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9621 states, 9620 states have (on average 1.225987525987526) internal successors, (11794), 9620 states have internal predecessors, (11794), 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) [2024-10-13 22:48:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9621 states to 9621 states and 11794 transitions. [2024-10-13 22:48:43,207 INFO L78 Accepts]: Start accepts. Automaton has 9621 states and 11794 transitions. Word has length 241 [2024-10-13 22:48:43,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:43,207 INFO L471 AbstractCegarLoop]: Abstraction has 9621 states and 11794 transitions. [2024-10-13 22:48:43,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2024-10-13 22:48:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 9621 states and 11794 transitions. [2024-10-13 22:48:43,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-13 22:48:43,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:43,220 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:43,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 22:48:43,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:43,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1232313720, now seen corresponding path program 1 times [2024-10-13 22:48:43,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:43,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313749487] [2024-10-13 22:48:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:43,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:48:43,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313749487] [2024-10-13 22:48:43,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313749487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:43,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:43,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309902996] [2024-10-13 22:48:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:43,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:43,591 INFO L87 Difference]: Start difference. First operand 9621 states and 11794 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2024-10-13 22:48:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:44,411 INFO L93 Difference]: Finished difference Result 25776 states and 31493 transitions. [2024-10-13 22:48:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:44,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 251 [2024-10-13 22:48:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:44,456 INFO L225 Difference]: With dead ends: 25776 [2024-10-13 22:48:44,456 INFO L226 Difference]: Without dead ends: 16156 [2024-10-13 22:48:44,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:44,470 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:44,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 221 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:48:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16156 states. [2024-10-13 22:48:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16156 to 16147. [2024-10-13 22:48:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16147 states, 16146 states have (on average 1.2127461910070605) internal successors, (19581), 16146 states have internal predecessors, (19581), 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) [2024-10-13 22:48:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16147 states to 16147 states and 19581 transitions. [2024-10-13 22:48:44,947 INFO L78 Accepts]: Start accepts. Automaton has 16147 states and 19581 transitions. Word has length 251 [2024-10-13 22:48:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:44,947 INFO L471 AbstractCegarLoop]: Abstraction has 16147 states and 19581 transitions. [2024-10-13 22:48:44,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2024-10-13 22:48:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16147 states and 19581 transitions. [2024-10-13 22:48:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-13 22:48:44,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:44,969 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:44,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 22:48:44,969 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:44,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:44,969 INFO L85 PathProgramCache]: Analyzing trace with hash 560940539, now seen corresponding path program 1 times [2024-10-13 22:48:44,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:44,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827716515] [2024-10-13 22:48:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:44,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-13 22:48:45,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:45,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827716515] [2024-10-13 22:48:45,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827716515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:45,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:45,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:48:45,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527557527] [2024-10-13 22:48:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:45,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:48:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:48:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:48:45,228 INFO L87 Difference]: Start difference. First operand 16147 states and 19581 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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) [2024-10-13 22:48:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:46,129 INFO L93 Difference]: Finished difference Result 37732 states and 45989 transitions. [2024-10-13 22:48:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:48:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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 253 [2024-10-13 22:48:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:46,162 INFO L225 Difference]: With dead ends: 37732 [2024-10-13 22:48:46,163 INFO L226 Difference]: Without dead ends: 22195 [2024-10-13 22:48:46,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:48:46,180 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 615 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:46,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 50 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 22:48:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22195 states. [2024-10-13 22:48:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22195 to 22188. [2024-10-13 22:48:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22188 states, 22187 states have (on average 1.1619416775589309) internal successors, (25780), 22187 states have internal predecessors, (25780), 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) [2024-10-13 22:48:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 25780 transitions. [2024-10-13 22:48:46,432 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 25780 transitions. Word has length 253 [2024-10-13 22:48:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:46,433 INFO L471 AbstractCegarLoop]: Abstraction has 22188 states and 25780 transitions. [2024-10-13 22:48:46,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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) [2024-10-13 22:48:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 25780 transitions. [2024-10-13 22:48:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-10-13 22:48:46,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:46,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:46,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 22:48:46,453 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:46,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2067688924, now seen corresponding path program 1 times [2024-10-13 22:48:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:46,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839301026] [2024-10-13 22:48:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:46,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:47,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839301026] [2024-10-13 22:48:47,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839301026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:47,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:47,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098568364] [2024-10-13 22:48:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:47,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:47,068 INFO L87 Difference]: Start difference. First operand 22188 states and 25780 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 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) [2024-10-13 22:48:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:47,643 INFO L93 Difference]: Finished difference Result 39084 states and 45309 transitions. [2024-10-13 22:48:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:47,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 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 261 [2024-10-13 22:48:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:47,676 INFO L225 Difference]: With dead ends: 39084 [2024-10-13 22:48:47,676 INFO L226 Difference]: Without dead ends: 22188 [2024-10-13 22:48:47,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:47,696 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:47,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 149 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22188 states. [2024-10-13 22:48:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22188 to 22188. [2024-10-13 22:48:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22188 states, 22187 states have (on average 1.1618064632442422) internal successors, (25777), 22187 states have internal predecessors, (25777), 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) [2024-10-13 22:48:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 25777 transitions. [2024-10-13 22:48:47,946 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 25777 transitions. Word has length 261 [2024-10-13 22:48:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:47,946 INFO L471 AbstractCegarLoop]: Abstraction has 22188 states and 25777 transitions. [2024-10-13 22:48:47,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 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) [2024-10-13 22:48:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 25777 transitions. [2024-10-13 22:48:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-10-13 22:48:47,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:47,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:47,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 22:48:47,967 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:47,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:47,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1968154429, now seen corresponding path program 1 times [2024-10-13 22:48:47,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:47,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028132979] [2024-10-13 22:48:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:47,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:48:48,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028132979] [2024-10-13 22:48:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028132979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:48,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:48,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338872820] [2024-10-13 22:48:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:48,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:48,311 INFO L87 Difference]: Start difference. First operand 22188 states and 25777 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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) [2024-10-13 22:48:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:49,012 INFO L93 Difference]: Finished difference Result 42759 states and 50058 transitions. [2024-10-13 22:48:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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 268 [2024-10-13 22:48:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:49,047 INFO L225 Difference]: With dead ends: 42759 [2024-10-13 22:48:49,048 INFO L226 Difference]: Without dead ends: 27897 [2024-10-13 22:48:49,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:49,065 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 160 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:49,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 121 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27897 states. [2024-10-13 22:48:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27897 to 25853. [2024-10-13 22:48:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25853 states, 25852 states have (on average 1.1790963948630666) internal successors, (30482), 25852 states have internal predecessors, (30482), 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) [2024-10-13 22:48:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25853 states to 25853 states and 30482 transitions. [2024-10-13 22:48:49,351 INFO L78 Accepts]: Start accepts. Automaton has 25853 states and 30482 transitions. Word has length 268 [2024-10-13 22:48:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:49,351 INFO L471 AbstractCegarLoop]: Abstraction has 25853 states and 30482 transitions. [2024-10-13 22:48:49,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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) [2024-10-13 22:48:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 25853 states and 30482 transitions. [2024-10-13 22:48:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-13 22:48:49,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:49,370 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:49,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 22:48:49,370 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:49,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:49,371 INFO L85 PathProgramCache]: Analyzing trace with hash -823151810, now seen corresponding path program 1 times [2024-10-13 22:48:49,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:49,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581228932] [2024-10-13 22:48:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:49,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-13 22:48:49,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581228932] [2024-10-13 22:48:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581228932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:49,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:48:49,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618009246] [2024-10-13 22:48:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:49,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:49,728 INFO L87 Difference]: Start difference. First operand 25853 states and 30482 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-10-13 22:48:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:50,481 INFO L93 Difference]: Finished difference Result 53738 states and 63202 transitions. [2024-10-13 22:48:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 277 [2024-10-13 22:48:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:50,512 INFO L225 Difference]: With dead ends: 53738 [2024-10-13 22:48:50,513 INFO L226 Difference]: Without dead ends: 29310 [2024-10-13 22:48:50,532 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 [2024-10-13 22:48:50,532 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 184 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:50,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 353 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29310 states. [2024-10-13 22:48:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29310 to 28492. [2024-10-13 22:48:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28492 states, 28491 states have (on average 1.1665438208557088) internal successors, (33236), 28491 states have internal predecessors, (33236), 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) [2024-10-13 22:48:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28492 states to 28492 states and 33236 transitions. [2024-10-13 22:48:50,927 INFO L78 Accepts]: Start accepts. Automaton has 28492 states and 33236 transitions. Word has length 277 [2024-10-13 22:48:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:50,927 INFO L471 AbstractCegarLoop]: Abstraction has 28492 states and 33236 transitions. [2024-10-13 22:48:50,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-10-13 22:48:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28492 states and 33236 transitions. [2024-10-13 22:48:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-10-13 22:48:50,943 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:50,944 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:50,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 22:48:50,945 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:50,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:50,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1117756785, now seen corresponding path program 1 times [2024-10-13 22:48:50,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:50,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313621369] [2024-10-13 22:48:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:50,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313621369] [2024-10-13 22:48:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313621369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:51,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:51,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:48:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444410676] [2024-10-13 22:48:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:51,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:48:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:48:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:48:51,167 INFO L87 Difference]: Start difference. First operand 28492 states and 33236 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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) [2024-10-13 22:48:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:52,173 INFO L93 Difference]: Finished difference Result 52923 states and 61837 transitions. [2024-10-13 22:48:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:48:52,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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 289 [2024-10-13 22:48:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:52,202 INFO L225 Difference]: With dead ends: 52923 [2024-10-13 22:48:52,202 INFO L226 Difference]: Without dead ends: 29319 [2024-10-13 22:48:52,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:48:52,221 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 353 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:52,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 74 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 22:48:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2024-10-13 22:48:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 28292. [2024-10-13 22:48:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28292 states, 28291 states have (on average 1.1119790746173694) internal successors, (31459), 28291 states have internal predecessors, (31459), 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) [2024-10-13 22:48:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28292 states to 28292 states and 31459 transitions. [2024-10-13 22:48:52,576 INFO L78 Accepts]: Start accepts. Automaton has 28292 states and 31459 transitions. Word has length 289 [2024-10-13 22:48:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:52,576 INFO L471 AbstractCegarLoop]: Abstraction has 28292 states and 31459 transitions. [2024-10-13 22:48:52,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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) [2024-10-13 22:48:52,577 INFO L276 IsEmpty]: Start isEmpty. Operand 28292 states and 31459 transitions. [2024-10-13 22:48:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-10-13 22:48:52,590 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:52,590 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:52,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 22:48:52,592 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:52,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2095846115, now seen corresponding path program 1 times [2024-10-13 22:48:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774375420] [2024-10-13 22:48:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:52,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-13 22:48:53,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:53,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774375420] [2024-10-13 22:48:53,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774375420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:53,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:53,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:53,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304959205] [2024-10-13 22:48:53,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:53,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:53,350 INFO L87 Difference]: Start difference. First operand 28292 states and 31459 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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) [2024-10-13 22:48:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:54,269 INFO L93 Difference]: Finished difference Result 66974 states and 74878 transitions. [2024-10-13 22:48:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:54,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 291 [2024-10-13 22:48:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:54,314 INFO L225 Difference]: With dead ends: 66974 [2024-10-13 22:48:54,314 INFO L226 Difference]: Without dead ends: 39904 [2024-10-13 22:48:54,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:54,351 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 200 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:54,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 99 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:48:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39904 states. [2024-10-13 22:48:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39904 to 39685. [2024-10-13 22:48:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39685 states, 39684 states have (on average 1.1194436044753553) internal successors, (44424), 39684 states have internal predecessors, (44424), 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) [2024-10-13 22:48:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39685 states to 39685 states and 44424 transitions. [2024-10-13 22:48:55,225 INFO L78 Accepts]: Start accepts. Automaton has 39685 states and 44424 transitions. Word has length 291 [2024-10-13 22:48:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:55,225 INFO L471 AbstractCegarLoop]: Abstraction has 39685 states and 44424 transitions. [2024-10-13 22:48:55,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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) [2024-10-13 22:48:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 39685 states and 44424 transitions. [2024-10-13 22:48:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-10-13 22:48:55,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:55,264 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:55,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 22:48:55,265 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:55,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1357004408, now seen corresponding path program 1 times [2024-10-13 22:48:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:55,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967334599] [2024-10-13 22:48:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:55,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-10-13 22:48:55,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:55,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967334599] [2024-10-13 22:48:55,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967334599] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:55,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185765304] [2024-10-13 22:48:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:55,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:55,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:55,799 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) [2024-10-13 22:48:55,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:48:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:55,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:48:55,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-10-13 22:48:56,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185765304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:56,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:48:56,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063934181] [2024-10-13 22:48:56,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:56,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:56,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:56,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:56,216 INFO L87 Difference]: Start difference. First operand 39685 states and 44424 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-10-13 22:48:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:56,879 INFO L93 Difference]: Finished difference Result 72660 states and 81215 transitions. [2024-10-13 22:48:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 300 [2024-10-13 22:48:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:56,910 INFO L225 Difference]: With dead ends: 72660 [2024-10-13 22:48:56,911 INFO L226 Difference]: Without dead ends: 37857 [2024-10-13 22:48:56,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:56,924 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 42 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:56,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 92 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 22:48:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37857 states. [2024-10-13 22:48:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37857 to 32970. [2024-10-13 22:48:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32970 states, 32969 states have (on average 1.1095271315478177) internal successors, (36580), 32969 states have internal predecessors, (36580), 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) [2024-10-13 22:48:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32970 states to 32970 states and 36580 transitions. [2024-10-13 22:48:57,381 INFO L78 Accepts]: Start accepts. Automaton has 32970 states and 36580 transitions. Word has length 300 [2024-10-13 22:48:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:57,382 INFO L471 AbstractCegarLoop]: Abstraction has 32970 states and 36580 transitions. [2024-10-13 22:48:57,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-10-13 22:48:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 32970 states and 36580 transitions. [2024-10-13 22:48:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-10-13 22:48:57,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:57,404 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:57,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 22:48:57,605 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,SelfDestructingSolverStorable14 [2024-10-13 22:48:57,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:57,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1259861417, now seen corresponding path program 1 times [2024-10-13 22:48:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:57,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073720780] [2024-10-13 22:48:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:58,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:58,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073720780] [2024-10-13 22:48:58,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073720780] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:58,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150026592] [2024-10-13 22:48:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:58,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:58,173 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) [2024-10-13 22:48:58,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:48:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:58,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:48:58,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-13 22:48:58,497 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:58,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150026592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:58,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:58,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-13 22:48:58,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061756944] [2024-10-13 22:48:58,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:58,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:58,499 INFO L87 Difference]: Start difference. First operand 32970 states and 36580 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 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) [2024-10-13 22:48:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:59,165 INFO L93 Difference]: Finished difference Result 75902 states and 84380 transitions. [2024-10-13 22:48:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 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 319 [2024-10-13 22:48:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:59,214 INFO L225 Difference]: With dead ends: 75902 [2024-10-13 22:48:59,214 INFO L226 Difference]: Without dead ends: 43950 [2024-10-13 22:48:59,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:59,330 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 143 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:59,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 105 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43950 states. [2024-10-13 22:48:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43950 to 42726. [2024-10-13 22:48:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42726 states, 42725 states have (on average 1.1046225863077823) internal successors, (47195), 42725 states have internal predecessors, (47195), 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) [2024-10-13 22:48:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42726 states to 42726 states and 47195 transitions. [2024-10-13 22:48:59,819 INFO L78 Accepts]: Start accepts. Automaton has 42726 states and 47195 transitions. Word has length 319 [2024-10-13 22:48:59,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:59,820 INFO L471 AbstractCegarLoop]: Abstraction has 42726 states and 47195 transitions. [2024-10-13 22:48:59,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 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) [2024-10-13 22:48:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 42726 states and 47195 transitions. [2024-10-13 22:48:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-13 22:48:59,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:59,849 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:59,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 22:49:00,049 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,SelfDestructingSolverStorable15 [2024-10-13 22:49:00,050 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:00,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:00,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2086042724, now seen corresponding path program 1 times [2024-10-13 22:49:00,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:00,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799552252] [2024-10-13 22:49:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:00,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:49:00,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:00,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799552252] [2024-10-13 22:49:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799552252] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128194196] [2024-10-13 22:49:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:00,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:00,639 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) [2024-10-13 22:49:00,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:49:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:00,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:49:00,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-13 22:49:00,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128194196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:00,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-13 22:49:00,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952946055] [2024-10-13 22:49:00,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:00,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:00,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:00,995 INFO L87 Difference]: Start difference. First operand 42726 states and 47195 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 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) [2024-10-13 22:49:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:01,530 INFO L93 Difference]: Finished difference Result 98275 states and 108489 transitions. [2024-10-13 22:49:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:49:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 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 328 [2024-10-13 22:49:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:01,597 INFO L225 Difference]: With dead ends: 98275 [2024-10-13 22:49:01,597 INFO L226 Difference]: Without dead ends: 64500 [2024-10-13 22:49:01,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:01,615 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 201 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:01,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 478 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:49:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64500 states. [2024-10-13 22:49:02,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64500 to 64498. [2024-10-13 22:49:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64498 states, 64497 states have (on average 1.1001752019473774) internal successors, (70958), 64497 states have internal predecessors, (70958), 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) [2024-10-13 22:49:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64498 states to 64498 states and 70958 transitions. [2024-10-13 22:49:02,332 INFO L78 Accepts]: Start accepts. Automaton has 64498 states and 70958 transitions. Word has length 328 [2024-10-13 22:49:02,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:02,332 INFO L471 AbstractCegarLoop]: Abstraction has 64498 states and 70958 transitions. [2024-10-13 22:49:02,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 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) [2024-10-13 22:49:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 64498 states and 70958 transitions. [2024-10-13 22:49:02,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-13 22:49:02,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:02,361 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:49:02,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 22:49:02,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:02,562 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:02,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:02,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1422589965, now seen corresponding path program 1 times [2024-10-13 22:49:02,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:02,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881030440] [2024-10-13 22:49:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:02,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-13 22:49:03,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:03,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881030440] [2024-10-13 22:49:03,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881030440] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:03,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665089399] [2024-10-13 22:49:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:03,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:03,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:03,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:03,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:49:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:03,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:49:03,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-10-13 22:49:03,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:03,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665089399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:03,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:03,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:49:03,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830682348] [2024-10-13 22:49:03,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:03,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:03,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:03,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:03,623 INFO L87 Difference]: Start difference. First operand 64498 states and 70958 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-10-13 22:49:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:04,409 INFO L93 Difference]: Finished difference Result 121680 states and 134128 transitions. [2024-10-13 22:49:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:49:04,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 332 [2024-10-13 22:49:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:04,470 INFO L225 Difference]: With dead ends: 121680 [2024-10-13 22:49:04,471 INFO L226 Difference]: Without dead ends: 58403 [2024-10-13 22:49:04,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:04,505 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 76 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:04,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 272 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:49:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58403 states. [2024-10-13 22:49:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58403 to 58394. [2024-10-13 22:49:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58394 states, 58393 states have (on average 1.096073159454044) internal successors, (64003), 58393 states have internal predecessors, (64003), 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) [2024-10-13 22:49:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58394 states to 58394 states and 64003 transitions. [2024-10-13 22:49:05,219 INFO L78 Accepts]: Start accepts. Automaton has 58394 states and 64003 transitions. Word has length 332 [2024-10-13 22:49:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:05,220 INFO L471 AbstractCegarLoop]: Abstraction has 58394 states and 64003 transitions. [2024-10-13 22:49:05,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-10-13 22:49:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 58394 states and 64003 transitions. [2024-10-13 22:49:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-10-13 22:49:05,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:05,246 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 22:49:05,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:49:05,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 22:49:05,447 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:05,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1207981039, now seen corresponding path program 1 times [2024-10-13 22:49:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339731533] [2024-10-13 22:49:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-13 22:49:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:05,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339731533] [2024-10-13 22:49:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339731533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:05,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:49:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:49:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332103327] [2024-10-13 22:49:05,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:05,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:49:05,823 INFO L87 Difference]: Start difference. First operand 58394 states and 64003 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 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) [2024-10-13 22:49:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:06,292 INFO L93 Difference]: Finished difference Result 153823 states and 168545 transitions. [2024-10-13 22:49:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:49:06,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 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 342 [2024-10-13 22:49:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:06,397 INFO L225 Difference]: With dead ends: 153823 [2024-10-13 22:49:06,398 INFO L226 Difference]: Without dead ends: 96853 [2024-10-13 22:49:06,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:49:06,447 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:06,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 472 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:49:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96853 states. [2024-10-13 22:49:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96853 to 96840. [2024-10-13 22:49:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96840 states, 96839 states have (on average 1.0945693367341671) internal successors, (105997), 96839 states have internal predecessors, (105997), 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) [2024-10-13 22:49:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96840 states to 96840 states and 105997 transitions. [2024-10-13 22:49:08,046 INFO L78 Accepts]: Start accepts. Automaton has 96840 states and 105997 transitions. Word has length 342 [2024-10-13 22:49:08,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:08,046 INFO L471 AbstractCegarLoop]: Abstraction has 96840 states and 105997 transitions. [2024-10-13 22:49:08,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 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) [2024-10-13 22:49:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 96840 states and 105997 transitions. [2024-10-13 22:49:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-10-13 22:49:08,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:08,071 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:49:08,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 22:49:08,071 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:08,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1083723364, now seen corresponding path program 1 times [2024-10-13 22:49:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:08,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843122331] [2024-10-13 22:49:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-13 22:49:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:08,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843122331] [2024-10-13 22:49:08,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843122331] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:08,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494185499] [2024-10-13 22:49:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:08,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:08,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:08,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:08,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 22:49:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:08,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:49:08,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-10-13 22:49:08,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:08,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494185499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:08,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:49:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770560709] [2024-10-13 22:49:08,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:08,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:08,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:08,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:08,957 INFO L87 Difference]: Start difference. First operand 96840 states and 105997 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2024-10-13 22:49:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:09,814 INFO L93 Difference]: Finished difference Result 185190 states and 202527 transitions. [2024-10-13 22:49:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:49:09,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 351 [2024-10-13 22:49:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:09,911 INFO L225 Difference]: With dead ends: 185190 [2024-10-13 22:49:09,911 INFO L226 Difference]: Without dead ends: 88554 [2024-10-13 22:49:09,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:09,970 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 37 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:09,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 322 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:49:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88554 states. [2024-10-13 22:49:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88554 to 88507. [2024-10-13 22:49:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88507 states, 88506 states have (on average 1.0882087090140782) internal successors, (96313), 88506 states have internal predecessors, (96313), 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) [2024-10-13 22:49:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88507 states to 88507 states and 96313 transitions. [2024-10-13 22:49:11,705 INFO L78 Accepts]: Start accepts. Automaton has 88507 states and 96313 transitions. Word has length 351 [2024-10-13 22:49:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:11,705 INFO L471 AbstractCegarLoop]: Abstraction has 88507 states and 96313 transitions. [2024-10-13 22:49:11,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2024-10-13 22:49:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 88507 states and 96313 transitions. [2024-10-13 22:49:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-10-13 22:49:11,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:11,744 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:49:11,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 22:49:11,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:11,945 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:11,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1275896315, now seen corresponding path program 1 times [2024-10-13 22:49:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:11,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530620647] [2024-10-13 22:49:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 213 proven. 58 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:49:13,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:13,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530620647] [2024-10-13 22:49:13,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530620647] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:13,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120032034] [2024-10-13 22:49:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:13,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:13,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:13,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:13,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 22:49:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:13,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 22:49:13,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:49:14,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:14,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120032034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:14,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:14,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 22:49:14,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420824201] [2024-10-13 22:49:14,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:14,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:49:14,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:49:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 22:49:14,199 INFO L87 Difference]: Start difference. First operand 88507 states and 96313 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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) [2024-10-13 22:49:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:15,379 INFO L93 Difference]: Finished difference Result 181348 states and 197497 transitions. [2024-10-13 22:49:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:49:15,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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 372 [2024-10-13 22:49:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:15,480 INFO L225 Difference]: With dead ends: 181348 [2024-10-13 22:49:15,480 INFO L226 Difference]: Without dead ends: 94263 [2024-10-13 22:49:15,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 22:49:15,502 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 412 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:15,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 94 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:49:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94263 states. [2024-10-13 22:49:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94263 to 90738. [2024-10-13 22:49:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90738 states, 90737 states have (on average 1.079658794097226) internal successors, (97965), 90737 states have internal predecessors, (97965), 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) [2024-10-13 22:49:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90738 states to 90738 states and 97965 transitions. [2024-10-13 22:49:16,687 INFO L78 Accepts]: Start accepts. Automaton has 90738 states and 97965 transitions. Word has length 372 [2024-10-13 22:49:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:16,687 INFO L471 AbstractCegarLoop]: Abstraction has 90738 states and 97965 transitions. [2024-10-13 22:49:16,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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) [2024-10-13 22:49:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 90738 states and 97965 transitions. [2024-10-13 22:49:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-10-13 22:49:16,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:16,720 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 22:49:16,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 22:49:16,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:16,922 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:16,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -486748211, now seen corresponding path program 1 times [2024-10-13 22:49:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509945704] [2024-10-13 22:49:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 230 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:49:17,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509945704] [2024-10-13 22:49:17,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509945704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000942477] [2024-10-13 22:49:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:17,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:17,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:17,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:17,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 22:49:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:18,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 22:49:18,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:49:18,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000942477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:18,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-13 22:49:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042360998] [2024-10-13 22:49:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:18,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:49:18,111 INFO L87 Difference]: Start difference. First operand 90738 states and 97965 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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) [2024-10-13 22:49:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:18,873 INFO L93 Difference]: Finished difference Result 166818 states and 179890 transitions. [2024-10-13 22:49:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:49:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 376 [2024-10-13 22:49:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:18,964 INFO L225 Difference]: With dead ends: 166818 [2024-10-13 22:49:18,965 INFO L226 Difference]: Without dead ends: 77502 [2024-10-13 22:49:19,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:49:19,017 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 195 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:19,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 302 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 22:49:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77502 states. [2024-10-13 22:49:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77502 to 76681. [2024-10-13 22:49:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76681 states, 76680 states have (on average 1.0601199791340636) internal successors, (81290), 76680 states have internal predecessors, (81290), 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) [2024-10-13 22:49:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76681 states to 76681 states and 81290 transitions. [2024-10-13 22:49:19,963 INFO L78 Accepts]: Start accepts. Automaton has 76681 states and 81290 transitions. Word has length 376 [2024-10-13 22:49:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:19,963 INFO L471 AbstractCegarLoop]: Abstraction has 76681 states and 81290 transitions. [2024-10-13 22:49:19,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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) [2024-10-13 22:49:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 76681 states and 81290 transitions. [2024-10-13 22:49:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-13 22:49:19,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:19,982 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 22:49:19,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 22:49:20,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:20,183 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:20,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash -431502915, now seen corresponding path program 1 times [2024-10-13 22:49:20,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:20,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765829956] [2024-10-13 22:49:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:20,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 221 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-13 22:49:20,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:20,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765829956] [2024-10-13 22:49:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765829956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:20,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351017473] [2024-10-13 22:49:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:20,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:20,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:20,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 22:49:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:20,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 22:49:20,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-13 22:49:21,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:21,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351017473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:21,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:21,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-13 22:49:21,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334368264] [2024-10-13 22:49:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:21,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:21,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:49:21,020 INFO L87 Difference]: Start difference. First operand 76681 states and 81290 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2024-10-13 22:49:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:21,952 INFO L93 Difference]: Finished difference Result 148708 states and 157612 transitions. [2024-10-13 22:49:21,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:49:21,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 388 [2024-10-13 22:49:21,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:22,033 INFO L225 Difference]: With dead ends: 148708 [2024-10-13 22:49:22,034 INFO L226 Difference]: Without dead ends: 73449 [2024-10-13 22:49:22,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:49:22,085 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:22,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 325 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:49:22,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73449 states. [2024-10-13 22:49:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73449 to 69162. [2024-10-13 22:49:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69162 states, 69161 states have (on average 1.054062260522549) internal successors, (72900), 69161 states have internal predecessors, (72900), 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) [2024-10-13 22:49:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69162 states to 69162 states and 72900 transitions. [2024-10-13 22:49:23,268 INFO L78 Accepts]: Start accepts. Automaton has 69162 states and 72900 transitions. Word has length 388 [2024-10-13 22:49:23,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:23,268 INFO L471 AbstractCegarLoop]: Abstraction has 69162 states and 72900 transitions. [2024-10-13 22:49:23,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2024-10-13 22:49:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 69162 states and 72900 transitions. [2024-10-13 22:49:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-10-13 22:49:23,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:23,285 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 22:49:23,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 22:49:23,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 22:49:23,486 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:23,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1136022166, now seen corresponding path program 1 times [2024-10-13 22:49:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861746308] [2024-10-13 22:49:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 236 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-13 22:49:23,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:23,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861746308] [2024-10-13 22:49:23,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861746308] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:23,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686108124] [2024-10-13 22:49:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:23,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:23,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:23,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:23,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 22:49:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:24,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 22:49:24,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:49:24,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686108124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:24,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:24,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2024-10-13 22:49:24,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47841039] [2024-10-13 22:49:24,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:24,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:49:24,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:24,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:49:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:49:24,728 INFO L87 Difference]: Start difference. First operand 69162 states and 72900 transitions. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2024-10-13 22:49:25,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:25,868 INFO L93 Difference]: Finished difference Result 167010 states and 176573 transitions. [2024-10-13 22:49:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:49:25,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 396 [2024-10-13 22:49:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:25,981 INFO L225 Difference]: With dead ends: 167010 [2024-10-13 22:49:25,981 INFO L226 Difference]: Without dead ends: 96428 [2024-10-13 22:49:26,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:49:26,034 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 262 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:26,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 332 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 22:49:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96428 states. [2024-10-13 22:49:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96428 to 89912. [2024-10-13 22:49:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89912 states, 89911 states have (on average 1.0514731234220507) internal successors, (94539), 89911 states have internal predecessors, (94539), 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) [2024-10-13 22:49:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89912 states to 89912 states and 94539 transitions. [2024-10-13 22:49:27,203 INFO L78 Accepts]: Start accepts. Automaton has 89912 states and 94539 transitions. Word has length 396 [2024-10-13 22:49:27,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:27,203 INFO L471 AbstractCegarLoop]: Abstraction has 89912 states and 94539 transitions. [2024-10-13 22:49:27,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2024-10-13 22:49:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 89912 states and 94539 transitions. [2024-10-13 22:49:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-10-13 22:49:27,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:27,230 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 22:49:27,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 22:49:27,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 22:49:27,433 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:27,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1065162880, now seen corresponding path program 1 times [2024-10-13 22:49:27,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:27,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91078184] [2024-10-13 22:49:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 22:49:28,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:28,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91078184] [2024-10-13 22:49:28,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91078184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:28,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:49:28,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:49:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674596753] [2024-10-13 22:49:28,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:28,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:28,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:49:28,363 INFO L87 Difference]: Start difference. First operand 89912 states and 94539 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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) [2024-10-13 22:49:29,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:29,517 INFO L93 Difference]: Finished difference Result 183694 states and 193062 transitions. [2024-10-13 22:49:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:49:29,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 406 [2024-10-13 22:49:29,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:29,628 INFO L225 Difference]: With dead ends: 183694 [2024-10-13 22:49:29,628 INFO L226 Difference]: Without dead ends: 94392 [2024-10-13 22:49:29,644 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 [2024-10-13 22:49:29,645 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 161 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:29,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 322 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:49:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94392 states. [2024-10-13 22:49:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94392 to 93566. [2024-10-13 22:49:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93566 states, 93565 states have (on average 1.0481590338267515) internal successors, (98071), 93565 states have internal predecessors, (98071), 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) [2024-10-13 22:49:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93566 states to 93566 states and 98071 transitions. [2024-10-13 22:49:30,856 INFO L78 Accepts]: Start accepts. Automaton has 93566 states and 98071 transitions. Word has length 406 [2024-10-13 22:49:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:30,856 INFO L471 AbstractCegarLoop]: Abstraction has 93566 states and 98071 transitions. [2024-10-13 22:49:30,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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) [2024-10-13 22:49:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 93566 states and 98071 transitions. [2024-10-13 22:49:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-10-13 22:49:30,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:30,882 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 22:49:30,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-13 22:49:30,882 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:30,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1140674958, now seen corresponding path program 1 times [2024-10-13 22:49:30,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:30,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543916429] [2024-10-13 22:49:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:30,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 254 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-13 22:49:31,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:31,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543916429] [2024-10-13 22:49:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543916429] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118112986] [2024-10-13 22:49:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:31,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:31,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:31,249 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:31,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 22:49:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:31,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 22:49:31,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-13 22:49:31,808 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:31,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118112986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:31,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-10-13 22:49:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53839750] [2024-10-13 22:49:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:31,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:49:31,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:49:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:31,810 INFO L87 Difference]: Start difference. First operand 93566 states and 98071 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2024-10-13 22:49:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:49:32,933 INFO L93 Difference]: Finished difference Result 240056 states and 251718 transitions. [2024-10-13 22:49:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:49:32,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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 406 [2024-10-13 22:49:32,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:49:33,105 INFO L225 Difference]: With dead ends: 240056 [2024-10-13 22:49:33,106 INFO L226 Difference]: Without dead ends: 147912 [2024-10-13 22:49:33,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:49:33,178 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 363 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:49:33,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 430 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:49:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147912 states. [2024-10-13 22:49:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147912 to 136902. [2024-10-13 22:49:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136902 states, 136901 states have (on average 1.049517534568776) internal successors, (143680), 136901 states have internal predecessors, (143680), 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) [2024-10-13 22:49:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136902 states to 136902 states and 143680 transitions. [2024-10-13 22:49:35,421 INFO L78 Accepts]: Start accepts. Automaton has 136902 states and 143680 transitions. Word has length 406 [2024-10-13 22:49:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:49:35,421 INFO L471 AbstractCegarLoop]: Abstraction has 136902 states and 143680 transitions. [2024-10-13 22:49:35,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2024-10-13 22:49:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 136902 states and 143680 transitions. [2024-10-13 22:49:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-10-13 22:49:35,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:49:35,445 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 22:49:35,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 22:49:35,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 22:49:35,647 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:49:35,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:49:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1579500022, now seen corresponding path program 1 times [2024-10-13 22:49:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:49:35,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61216110] [2024-10-13 22:49:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:35,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:49:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 287 proven. 55 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:49:37,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:49:37,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61216110] [2024-10-13 22:49:37,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61216110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:49:37,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790442015] [2024-10-13 22:49:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:49:37,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:49:37,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:49:37,663 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:49:37,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 22:49:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:49:37,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 22:49:37,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:49:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 22:49:38,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:49:38,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790442015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:49:38,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:49:38,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 22:49:38,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879350743] [2024-10-13 22:49:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:49:38,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:49:38,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:49:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:49:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 22:49:38,043 INFO L87 Difference]: Start difference. First operand 136902 states and 143680 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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)