./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/Problem11_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/Problem11_label48.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 7a889f150dc2c455e03355eaf9dfccf3bdcd55e31f50409b2096126a8e217346 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:03:59,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:03:59,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:03:59,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:03:59,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:03:59,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:03:59,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:03:59,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:03:59,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:03:59,240 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:03:59,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:03:59,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:03:59,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:03:59,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:03:59,244 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:03:59,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:03:59,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:03:59,245 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:03:59,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:03:59,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:03:59,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:03:59,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:03:59,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:03:59,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:03:59,250 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:03:59,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:03:59,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:03:59,251 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:03:59,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:03:59,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:03:59,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:03:59,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:03:59,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:03:59,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:03:59,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:03:59,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:03:59,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:03:59,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:03:59,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:03:59,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:03:59,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:03:59,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:03:59,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a889f150dc2c455e03355eaf9dfccf3bdcd55e31f50409b2096126a8e217346 [2024-11-19 18:03:59,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:03:59,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:03:59,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:03:59,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:03:59,553 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:03:59,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label48.c [2024-11-19 18:04:01,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:04:01,304 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:04:01,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label48.c [2024-11-19 18:04:01,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3438708/5c85fbbfd61148119439e1d04bbab6b4/FLAG6c3b52bff [2024-11-19 18:04:01,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3438708/5c85fbbfd61148119439e1d04bbab6b4 [2024-11-19 18:04:01,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:04:01,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:04:01,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:04:01,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:04:01,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:04:01,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:04:01" (1/1) ... [2024-11-19 18:04:01,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfcb247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:01, skipping insertion in model container [2024-11-19 18:04:01,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:04:01" (1/1) ... [2024-11-19 18:04:01,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:04:01,696 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label48.c[7294,7307] [2024-11-19 18:04:01,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:04:01,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:04:01,952 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label48.c[7294,7307] [2024-11-19 18:04:02,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:04:02,152 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:04:02,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02 WrapperNode [2024-11-19 18:04:02,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:04:02,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:04:02,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:04:02,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:04:02,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,288 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-19 18:04:02,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:04:02,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:04:02,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:04:02,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:04:02,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,371 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:04:02,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:04:02,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:04:02,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:04:02,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:04:02,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (1/1) ... [2024-11-19 18:04:02,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:04:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:02,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 18:04:02,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 18:04:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:04:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:04:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:04:02,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:04:02,654 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:04:02,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:04:04,209 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-19 18:04:04,209 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:04:04,235 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:04:04,236 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:04:04,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:04:04 BoogieIcfgContainer [2024-11-19 18:04:04,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:04:04,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:04:04,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:04:04,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:04:04,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:04:01" (1/3) ... [2024-11-19 18:04:04,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67aca9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:04:04, skipping insertion in model container [2024-11-19 18:04:04,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:02" (2/3) ... [2024-11-19 18:04:04,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67aca9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:04:04, skipping insertion in model container [2024-11-19 18:04:04,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:04:04" (3/3) ... [2024-11-19 18:04:04,246 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label48.c [2024-11-19 18:04:04,261 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:04:04,261 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:04:04,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:04:04,344 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;@48c60595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:04:04,345 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:04:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 18:04:04,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:04,361 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] [2024-11-19 18:04:04,362 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:04,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 761214138, now seen corresponding path program 1 times [2024-11-19 18:04:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:04,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672368934] [2024-11-19 18:04:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:04,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:04,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672368934] [2024-11-19 18:04:04,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672368934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:04,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:04,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:04,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786121498] [2024-11-19 18:04:04,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:04,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:04,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:04,821 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 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 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:05,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:05,971 INFO L93 Difference]: Finished difference Result 769 states and 1360 transitions. [2024-11-19 18:04:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-19 18:04:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:05,990 INFO L225 Difference]: With dead ends: 769 [2024-11-19 18:04:05,991 INFO L226 Difference]: Without dead ends: 422 [2024-11-19 18:04:05,995 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 [2024-11-19 18:04:05,998 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 190 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:05,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 163 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:04:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-19 18:04:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2024-11-19 18:04:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.5231143552311435) internal successors, (626), 411 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 626 transitions. [2024-11-19 18:04:06,084 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 626 transitions. Word has length 50 [2024-11-19 18:04:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:06,085 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 626 transitions. [2024-11-19 18:04:06,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 626 transitions. [2024-11-19 18:04:06,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-19 18:04:06,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:06,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:06,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:04:06,093 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:06,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1807266807, now seen corresponding path program 1 times [2024-11-19 18:04:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:06,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524811741] [2024-11-19 18:04:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:06,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:06,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:06,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524811741] [2024-11-19 18:04:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524811741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:06,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:06,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875878049] [2024-11-19 18:04:06,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:06,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:06,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:06,308 INFO L87 Difference]: Start difference. First operand 412 states and 626 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:07,011 INFO L93 Difference]: Finished difference Result 1194 states and 1821 transitions. [2024-11-19 18:04:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:07,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-19 18:04:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:07,026 INFO L225 Difference]: With dead ends: 1194 [2024-11-19 18:04:07,026 INFO L226 Difference]: Without dead ends: 784 [2024-11-19 18:04:07,028 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 [2024-11-19 18:04:07,029 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:07,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 154 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:07,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-19 18:04:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2024-11-19 18:04:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3742017879948913) internal successors, (1076), 783 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1076 transitions. [2024-11-19 18:04:07,062 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1076 transitions. Word has length 116 [2024-11-19 18:04:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:07,062 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1076 transitions. [2024-11-19 18:04:07,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1076 transitions. [2024-11-19 18:04:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-19 18:04:07,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:07,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:07,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:04:07,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:07,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash -66853459, now seen corresponding path program 1 times [2024-11-19 18:04:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:07,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146612444] [2024-11-19 18:04:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:07,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:07,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146612444] [2024-11-19 18:04:07,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146612444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:07,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:07,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:07,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866654201] [2024-11-19 18:04:07,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:07,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:07,447 INFO L87 Difference]: Start difference. First operand 784 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:08,104 INFO L93 Difference]: Finished difference Result 1936 states and 2599 transitions. [2024-11-19 18:04:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:08,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-19 18:04:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:08,112 INFO L225 Difference]: With dead ends: 1936 [2024-11-19 18:04:08,112 INFO L226 Difference]: Without dead ends: 1154 [2024-11-19 18:04:08,114 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 [2024-11-19 18:04:08,115 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:08,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-11-19 18:04:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1153. [2024-11-19 18:04:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2699652777777777) internal successors, (1463), 1152 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1463 transitions. [2024-11-19 18:04:08,157 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1463 transitions. Word has length 120 [2024-11-19 18:04:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:08,158 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1463 transitions. [2024-11-19 18:04:08,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1463 transitions. [2024-11-19 18:04:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-19 18:04:08,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:08,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:08,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:04:08,168 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:08,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2125699946, now seen corresponding path program 1 times [2024-11-19 18:04:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995697695] [2024-11-19 18:04:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:08,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:08,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995697695] [2024-11-19 18:04:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995697695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:08,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233871844] [2024-11-19 18:04:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:08,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:08,423 INFO L87 Difference]: Start difference. First operand 1153 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:09,178 INFO L93 Difference]: Finished difference Result 2679 states and 3481 transitions. [2024-11-19 18:04:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:09,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-11-19 18:04:09,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:09,187 INFO L225 Difference]: With dead ends: 2679 [2024-11-19 18:04:09,187 INFO L226 Difference]: Without dead ends: 1712 [2024-11-19 18:04:09,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:09,193 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 156 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:09,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 332 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2024-11-19 18:04:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1521. [2024-11-19 18:04:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 1.255921052631579) internal successors, (1909), 1520 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1909 transitions. [2024-11-19 18:04:09,220 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1909 transitions. Word has length 162 [2024-11-19 18:04:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:09,221 INFO L471 AbstractCegarLoop]: Abstraction has 1521 states and 1909 transitions. [2024-11-19 18:04:09,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1909 transitions. [2024-11-19 18:04:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-19 18:04:09,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:09,226 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:09,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:04:09,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:09,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1101521033, now seen corresponding path program 1 times [2024-11-19 18:04:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737287662] [2024-11-19 18:04:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-19 18:04:09,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:09,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737287662] [2024-11-19 18:04:09,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737287662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:09,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:09,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271955807] [2024-11-19 18:04:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:09,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:09,532 INFO L87 Difference]: Start difference. First operand 1521 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:10,365 INFO L93 Difference]: Finished difference Result 3597 states and 4559 transitions. [2024-11-19 18:04:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:10,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 232 [2024-11-19 18:04:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:10,372 INFO L225 Difference]: With dead ends: 3597 [2024-11-19 18:04:10,372 INFO L226 Difference]: Without dead ends: 2078 [2024-11-19 18:04:10,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:10,376 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 147 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:10,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 391 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:04:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2024-11-19 18:04:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1889. [2024-11-19 18:04:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.2473516949152543) internal successors, (2355), 1888 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2355 transitions. [2024-11-19 18:04:10,410 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2355 transitions. Word has length 232 [2024-11-19 18:04:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:10,412 INFO L471 AbstractCegarLoop]: Abstraction has 1889 states and 2355 transitions. [2024-11-19 18:04:10,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2355 transitions. [2024-11-19 18:04:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-19 18:04:10,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:10,417 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:10,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:04:10,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:10,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 697992722, now seen corresponding path program 1 times [2024-11-19 18:04:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:10,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837286332] [2024-11-19 18:04:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:10,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837286332] [2024-11-19 18:04:10,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837286332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:10,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:10,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:10,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032747034] [2024-11-19 18:04:10,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:10,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:10,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:10,792 INFO L87 Difference]: Start difference. First operand 1889 states and 2355 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:11,583 INFO L93 Difference]: Finished difference Result 5077 states and 6327 transitions. [2024-11-19 18:04:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:11,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-19 18:04:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:11,598 INFO L225 Difference]: With dead ends: 5077 [2024-11-19 18:04:11,599 INFO L226 Difference]: Without dead ends: 3190 [2024-11-19 18:04:11,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:11,604 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 123 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:11,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 141 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2024-11-19 18:04:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3186. [2024-11-19 18:04:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 1.2160125588697017) internal successors, (3873), 3185 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 3873 transitions. [2024-11-19 18:04:11,665 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 3873 transitions. Word has length 259 [2024-11-19 18:04:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:11,667 INFO L471 AbstractCegarLoop]: Abstraction has 3186 states and 3873 transitions. [2024-11-19 18:04:11,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 3873 transitions. [2024-11-19 18:04:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-19 18:04:11,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:11,672 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:11,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:04:11,673 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:11,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash 387212821, now seen corresponding path program 1 times [2024-11-19 18:04:11,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:11,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164663765] [2024-11-19 18:04:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:11,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-19 18:04:12,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:12,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164663765] [2024-11-19 18:04:12,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164663765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:12,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104238943] [2024-11-19 18:04:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:12,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:12,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:12,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:12,180 INFO L87 Difference]: Start difference. First operand 3186 states and 3873 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:12,902 INFO L93 Difference]: Finished difference Result 8220 states and 9834 transitions. [2024-11-19 18:04:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 265 [2024-11-19 18:04:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:12,918 INFO L225 Difference]: With dead ends: 8220 [2024-11-19 18:04:12,919 INFO L226 Difference]: Without dead ends: 5036 [2024-11-19 18:04:12,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:12,923 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 171 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:12,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 392 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2024-11-19 18:04:12,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 5035. [2024-11-19 18:04:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5034 states have (on average 1.1835518474374256) internal successors, (5958), 5034 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 5958 transitions. [2024-11-19 18:04:12,997 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 5958 transitions. Word has length 265 [2024-11-19 18:04:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:12,998 INFO L471 AbstractCegarLoop]: Abstraction has 5035 states and 5958 transitions. [2024-11-19 18:04:12,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 5958 transitions. [2024-11-19 18:04:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-19 18:04:13,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:13,003 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:13,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:04:13,003 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:13,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash -914056920, now seen corresponding path program 1 times [2024-11-19 18:04:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147392435] [2024-11-19 18:04:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 137 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:14,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147392435] [2024-11-19 18:04:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147392435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:14,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288266445] [2024-11-19 18:04:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:14,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:14,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:14,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:14,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:04:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:14,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:04:14,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-19 18:04:14,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288266445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:14,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:14,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-19 18:04:14,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101590157] [2024-11-19 18:04:14,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:14,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:14,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:14,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:14,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:04:14,608 INFO L87 Difference]: Start difference. First operand 5035 states and 5958 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:15,811 INFO L93 Difference]: Finished difference Result 13958 states and 16430 transitions. [2024-11-19 18:04:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:15,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 [2024-11-19 18:04:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:15,841 INFO L225 Difference]: With dead ends: 13958 [2024-11-19 18:04:15,842 INFO L226 Difference]: Without dead ends: 9293 [2024-11-19 18:04:15,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:04:15,850 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 274 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:15,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 192 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:04:15,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9293 states. [2024-11-19 18:04:15,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9293 to 4667. [2024-11-19 18:04:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4667 states, 4666 states have (on average 1.1941705957994) internal successors, (5572), 4666 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 5572 transitions. [2024-11-19 18:04:15,980 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 5572 transitions. Word has length 268 [2024-11-19 18:04:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:15,980 INFO L471 AbstractCegarLoop]: Abstraction has 4667 states and 5572 transitions. [2024-11-19 18:04:15,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 5572 transitions. [2024-11-19 18:04:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-19 18:04:15,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:15,986 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:15,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:04:16,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:16,187 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:16,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash 448170155, now seen corresponding path program 1 times [2024-11-19 18:04:16,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:16,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180163166] [2024-11-19 18:04:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:16,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:16,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180163166] [2024-11-19 18:04:16,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180163166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:16,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:16,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:04:16,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555187862] [2024-11-19 18:04:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:16,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:04:16,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:04:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:04:16,772 INFO L87 Difference]: Start difference. First operand 4667 states and 5572 transitions. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:18,458 INFO L93 Difference]: Finished difference Result 15972 states and 19215 transitions. [2024-11-19 18:04:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 18:04:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2024-11-19 18:04:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:18,491 INFO L225 Difference]: With dead ends: 15972 [2024-11-19 18:04:18,491 INFO L226 Difference]: Without dead ends: 11307 [2024-11-19 18:04:18,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:04:18,501 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 367 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:18,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 129 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:04:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2024-11-19 18:04:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 10930. [2024-11-19 18:04:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10930 states, 10929 states have (on average 1.1707384024155916) internal successors, (12795), 10929 states have internal predecessors, (12795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10930 states to 10930 states and 12795 transitions. [2024-11-19 18:04:18,762 INFO L78 Accepts]: Start accepts. Automaton has 10930 states and 12795 transitions. Word has length 269 [2024-11-19 18:04:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:18,763 INFO L471 AbstractCegarLoop]: Abstraction has 10930 states and 12795 transitions. [2024-11-19 18:04:18,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10930 states and 12795 transitions. [2024-11-19 18:04:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-19 18:04:18,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:18,779 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:18,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:04:18,780 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:18,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:18,780 INFO L85 PathProgramCache]: Analyzing trace with hash 510762410, now seen corresponding path program 1 times [2024-11-19 18:04:18,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906449420] [2024-11-19 18:04:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:18,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-19 18:04:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906449420] [2024-11-19 18:04:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906449420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:18,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:18,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:18,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073653910] [2024-11-19 18:04:18,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:18,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:18,950 INFO L87 Difference]: Start difference. First operand 10930 states and 12795 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:19,694 INFO L93 Difference]: Finished difference Result 21488 states and 25200 transitions. [2024-11-19 18:04:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 280 [2024-11-19 18:04:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:19,719 INFO L225 Difference]: With dead ends: 21488 [2024-11-19 18:04:19,719 INFO L226 Difference]: Without dead ends: 10928 [2024-11-19 18:04:19,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:19,731 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 185 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:19,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 304 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10928 states. [2024-11-19 18:04:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10928 to 10744. [2024-11-19 18:04:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10744 states, 10743 states have (on average 1.141952899562506) internal successors, (12268), 10743 states have internal predecessors, (12268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 12268 transitions. [2024-11-19 18:04:19,899 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 12268 transitions. Word has length 280 [2024-11-19 18:04:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:19,900 INFO L471 AbstractCegarLoop]: Abstraction has 10744 states and 12268 transitions. [2024-11-19 18:04:19,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 12268 transitions. [2024-11-19 18:04:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-19 18:04:19,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:19,907 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:19,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:04:19,907 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:19,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash 577294273, now seen corresponding path program 1 times [2024-11-19 18:04:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754960798] [2024-11-19 18:04:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:19,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 95 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:20,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:20,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754960798] [2024-11-19 18:04:20,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754960798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:20,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245891782] [2024-11-19 18:04:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:20,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:20,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:20,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:04:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:20,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:04:20,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:20,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:20,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245891782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:20,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:20,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:04:20,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414688143] [2024-11-19 18:04:20,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:20,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:20,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:20,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:20,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:20,798 INFO L87 Difference]: Start difference. First operand 10744 states and 12268 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:21,436 INFO L93 Difference]: Finished difference Result 22426 states and 25761 transitions. [2024-11-19 18:04:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 283 [2024-11-19 18:04:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:21,457 INFO L225 Difference]: With dead ends: 22426 [2024-11-19 18:04:21,457 INFO L226 Difference]: Without dead ends: 12052 [2024-11-19 18:04:21,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:21,470 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 99 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:21,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 342 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12052 states. [2024-11-19 18:04:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12052 to 12043. [2024-11-19 18:04:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12043 states, 12042 states have (on average 1.143996013951171) internal successors, (13776), 12042 states have internal predecessors, (13776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12043 states to 12043 states and 13776 transitions. [2024-11-19 18:04:21,614 INFO L78 Accepts]: Start accepts. Automaton has 12043 states and 13776 transitions. Word has length 283 [2024-11-19 18:04:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:21,618 INFO L471 AbstractCegarLoop]: Abstraction has 12043 states and 13776 transitions. [2024-11-19 18:04:21,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 12043 states and 13776 transitions. [2024-11-19 18:04:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-19 18:04:21,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:21,626 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:21,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 18:04:21,827 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,SelfDestructingSolverStorable10 [2024-11-19 18:04:21,827 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:21,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1277495970, now seen corresponding path program 1 times [2024-11-19 18:04:21,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:21,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234511030] [2024-11-19 18:04:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:21,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234511030] [2024-11-19 18:04:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234511030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:04:22,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644382608] [2024-11-19 18:04:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:22,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:22,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:22,251 INFO L87 Difference]: Start difference. First operand 12043 states and 13776 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:23,360 INFO L93 Difference]: Finished difference Result 26298 states and 30094 transitions. [2024-11-19 18:04:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2024-11-19 18:04:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:23,387 INFO L225 Difference]: With dead ends: 26298 [2024-11-19 18:04:23,387 INFO L226 Difference]: Without dead ends: 14625 [2024-11-19 18:04:23,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:23,401 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 267 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:23,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 97 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:04:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14625 states. [2024-11-19 18:04:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14625 to 14619. [2024-11-19 18:04:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14619 states, 14618 states have (on average 1.1313449172253387) internal successors, (16538), 14618 states have internal predecessors, (16538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14619 states to 14619 states and 16538 transitions. [2024-11-19 18:04:23,717 INFO L78 Accepts]: Start accepts. Automaton has 14619 states and 16538 transitions. Word has length 286 [2024-11-19 18:04:23,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:23,718 INFO L471 AbstractCegarLoop]: Abstraction has 14619 states and 16538 transitions. [2024-11-19 18:04:23,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 14619 states and 16538 transitions. [2024-11-19 18:04:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-19 18:04:23,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:23,725 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:23,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:04:23,726 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:23,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1227652913, now seen corresponding path program 1 times [2024-11-19 18:04:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743724995] [2024-11-19 18:04:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:24,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:24,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743724995] [2024-11-19 18:04:24,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743724995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:24,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:24,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:04:24,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954532503] [2024-11-19 18:04:24,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:24,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:24,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:24,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:24,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:24,283 INFO L87 Difference]: Start difference. First operand 14619 states and 16538 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:25,262 INFO L93 Difference]: Finished difference Result 30912 states and 35030 transitions. [2024-11-19 18:04:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 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 288 [2024-11-19 18:04:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:25,282 INFO L225 Difference]: With dead ends: 30912 [2024-11-19 18:04:25,283 INFO L226 Difference]: Without dead ends: 16663 [2024-11-19 18:04:25,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:25,298 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 252 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:25,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 178 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:04:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16663 states. [2024-11-19 18:04:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16663 to 15550. [2024-11-19 18:04:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15550 states, 15549 states have (on average 1.1291401376294294) internal successors, (17557), 15549 states have internal predecessors, (17557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15550 states to 15550 states and 17557 transitions. [2024-11-19 18:04:25,477 INFO L78 Accepts]: Start accepts. Automaton has 15550 states and 17557 transitions. Word has length 288 [2024-11-19 18:04:25,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:25,477 INFO L471 AbstractCegarLoop]: Abstraction has 15550 states and 17557 transitions. [2024-11-19 18:04:25,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15550 states and 17557 transitions. [2024-11-19 18:04:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-19 18:04:25,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:25,485 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:25,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:04:25,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:25,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash 100748151, now seen corresponding path program 1 times [2024-11-19 18:04:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:25,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287031874] [2024-11-19 18:04:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:25,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-19 18:04:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287031874] [2024-11-19 18:04:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287031874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:25,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:25,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:25,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617756347] [2024-11-19 18:04:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:25,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:25,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:25,716 INFO L87 Difference]: Start difference. First operand 15550 states and 17557 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:26,394 INFO L93 Difference]: Finished difference Result 33857 states and 38353 transitions. [2024-11-19 18:04:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 312 [2024-11-19 18:04:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:26,418 INFO L225 Difference]: With dead ends: 33857 [2024-11-19 18:04:26,419 INFO L226 Difference]: Without dead ends: 18677 [2024-11-19 18:04:26,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:26,433 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 152 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:26,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 357 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18677 states. [2024-11-19 18:04:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18677 to 17573. [2024-11-19 18:04:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17573 states, 17572 states have (on average 1.1226951969041656) internal successors, (19728), 17572 states have internal predecessors, (19728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17573 states to 17573 states and 19728 transitions. [2024-11-19 18:04:26,634 INFO L78 Accepts]: Start accepts. Automaton has 17573 states and 19728 transitions. Word has length 312 [2024-11-19 18:04:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:26,635 INFO L471 AbstractCegarLoop]: Abstraction has 17573 states and 19728 transitions. [2024-11-19 18:04:26,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 17573 states and 19728 transitions. [2024-11-19 18:04:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-19 18:04:26,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:26,647 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:04:26,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:04:26,647 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:26,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1462001354, now seen corresponding path program 1 times [2024-11-19 18:04:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:26,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656272778] [2024-11-19 18:04:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 221 proven. 72 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-19 18:04:27,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:27,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656272778] [2024-11-19 18:04:27,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656272778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:27,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424938680] [2024-11-19 18:04:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:27,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:27,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:27,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:27,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 18:04:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:27,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:04:27,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-19 18:04:28,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424938680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:28,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:04:28,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789734784] [2024-11-19 18:04:28,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:28,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:28,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:28,187 INFO L87 Difference]: Start difference. First operand 17573 states and 19728 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:28,789 INFO L93 Difference]: Finished difference Result 37361 states and 41940 transitions. [2024-11-19 18:04:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:28,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 337 [2024-11-19 18:04:28,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:28,809 INFO L225 Difference]: With dead ends: 37361 [2024-11-19 18:04:28,810 INFO L226 Difference]: Without dead ends: 19974 [2024-11-19 18:04:28,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:28,824 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 84 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:28,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 365 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2024-11-19 18:04:29,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 19235. [2024-11-19 18:04:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19235 states, 19234 states have (on average 1.116928356036186) internal successors, (21483), 19234 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19235 states to 19235 states and 21483 transitions. [2024-11-19 18:04:29,120 INFO L78 Accepts]: Start accepts. Automaton has 19235 states and 21483 transitions. Word has length 337 [2024-11-19 18:04:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:29,121 INFO L471 AbstractCegarLoop]: Abstraction has 19235 states and 21483 transitions. [2024-11-19 18:04:29,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 19235 states and 21483 transitions. [2024-11-19 18:04:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-19 18:04:29,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:29,136 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:29,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 18:04:29,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:29,337 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:29,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1351852439, now seen corresponding path program 1 times [2024-11-19 18:04:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:29,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746079482] [2024-11-19 18:04:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 254 proven. 54 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-19 18:04:30,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:30,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746079482] [2024-11-19 18:04:30,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746079482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:30,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140755712] [2024-11-19 18:04:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:30,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:30,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:30,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 18:04:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:30,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:04:30,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-19 18:04:30,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:30,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140755712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:30,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:30,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:04:30,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269467548] [2024-11-19 18:04:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:30,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:30,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:30,660 INFO L87 Difference]: Start difference. First operand 19235 states and 21483 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:31,211 INFO L93 Difference]: Finished difference Result 39389 states and 43927 transitions. [2024-11-19 18:04:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:31,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 358 [2024-11-19 18:04:31,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:31,231 INFO L225 Difference]: With dead ends: 39389 [2024-11-19 18:04:31,231 INFO L226 Difference]: Without dead ends: 20156 [2024-11-19 18:04:31,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:31,246 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 91 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:31,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 170 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20156 states. [2024-11-19 18:04:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20156 to 17753. [2024-11-19 18:04:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17753 states, 17752 states have (on average 1.1128323569175305) internal successors, (19755), 17752 states have internal predecessors, (19755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17753 states to 17753 states and 19755 transitions. [2024-11-19 18:04:31,511 INFO L78 Accepts]: Start accepts. Automaton has 17753 states and 19755 transitions. Word has length 358 [2024-11-19 18:04:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:31,512 INFO L471 AbstractCegarLoop]: Abstraction has 17753 states and 19755 transitions. [2024-11-19 18:04:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 17753 states and 19755 transitions. [2024-11-19 18:04:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-19 18:04:31,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:31,520 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:31,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 18:04:31,720 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,SelfDestructingSolverStorable15 [2024-11-19 18:04:31,721 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:31,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash -93934851, now seen corresponding path program 1 times [2024-11-19 18:04:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:31,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834264475] [2024-11-19 18:04:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 267 proven. 78 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-19 18:04:32,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834264475] [2024-11-19 18:04:32,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834264475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:32,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330764285] [2024-11-19 18:04:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:32,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:32,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:32,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:32,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 18:04:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:32,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 18:04:32,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 202 proven. 143 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-19 18:04:33,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:04:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 297 proven. 48 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-19 18:04:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330764285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:04:33,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:04:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-19 18:04:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080777553] [2024-11-19 18:04:33,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:04:33,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 18:04:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 18:04:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-19 18:04:33,787 INFO L87 Difference]: Start difference. First operand 17753 states and 19755 transitions. Second operand has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:38,607 INFO L93 Difference]: Finished difference Result 47513 states and 52862 transitions. [2024-11-19 18:04:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 18:04:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 0 states have call successors, (0), 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 375 [2024-11-19 18:04:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:38,642 INFO L225 Difference]: With dead ends: 47513 [2024-11-19 18:04:38,642 INFO L226 Difference]: Without dead ends: 29210 [2024-11-19 18:04:38,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2024-11-19 18:04:38,661 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 2487 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6617 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 7340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 6617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:38,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 239 Invalid, 7340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 6617 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-19 18:04:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29210 states. [2024-11-19 18:04:38,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29210 to 14431. [2024-11-19 18:04:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14431 states, 14430 states have (on average 1.1045738045738045) internal successors, (15939), 14430 states have internal predecessors, (15939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14431 states to 14431 states and 15939 transitions. [2024-11-19 18:04:38,939 INFO L78 Accepts]: Start accepts. Automaton has 14431 states and 15939 transitions. Word has length 375 [2024-11-19 18:04:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:38,940 INFO L471 AbstractCegarLoop]: Abstraction has 14431 states and 15939 transitions. [2024-11-19 18:04:38,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14431 states and 15939 transitions. [2024-11-19 18:04:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-19 18:04:38,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:38,948 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:38,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 18:04:39,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 18:04:39,149 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:39,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:39,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1257108569, now seen corresponding path program 1 times [2024-11-19 18:04:39,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:39,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862254256] [2024-11-19 18:04:39,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:39,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 143 proven. 202 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-19 18:04:39,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:39,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862254256] [2024-11-19 18:04:39,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862254256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:39,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107442597] [2024-11-19 18:04:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:39,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:39,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:39,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 18:04:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:39,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:04:39,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-19 18:04:39,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107442597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:04:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221983317] [2024-11-19 18:04:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:39,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:39,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:39,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:39,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:04:39,874 INFO L87 Difference]: Start difference. First operand 14431 states and 15939 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:40,890 INFO L93 Difference]: Finished difference Result 29972 states and 33114 transitions. [2024-11-19 18:04:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:40,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 381 [2024-11-19 18:04:40,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:40,906 INFO L225 Difference]: With dead ends: 29972 [2024-11-19 18:04:40,907 INFO L226 Difference]: Without dead ends: 15911 [2024-11-19 18:04:40,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:04:40,918 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:40,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 111 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:04:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15911 states. [2024-11-19 18:04:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15911 to 14801. [2024-11-19 18:04:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14801 states, 14800 states have (on average 1.1028378378378378) internal successors, (16322), 14800 states have internal predecessors, (16322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14801 states to 14801 states and 16322 transitions. [2024-11-19 18:04:41,051 INFO L78 Accepts]: Start accepts. Automaton has 14801 states and 16322 transitions. Word has length 381 [2024-11-19 18:04:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:41,051 INFO L471 AbstractCegarLoop]: Abstraction has 14801 states and 16322 transitions. [2024-11-19 18:04:41,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 14801 states and 16322 transitions. [2024-11-19 18:04:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-19 18:04:41,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:41,058 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:41,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 18:04:41,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 18:04:41,258 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:41,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1465243018, now seen corresponding path program 1 times [2024-11-19 18:04:41,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:41,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330631033] [2024-11-19 18:04:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:41,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-19 18:04:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330631033] [2024-11-19 18:04:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330631033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:41,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:41,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483986951] [2024-11-19 18:04:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:41,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:41,528 INFO L87 Difference]: Start difference. First operand 14801 states and 16322 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:42,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:42,463 INFO L93 Difference]: Finished difference Result 35127 states and 38624 transitions. [2024-11-19 18:04:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 414 [2024-11-19 18:04:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:42,484 INFO L225 Difference]: With dead ends: 35127 [2024-11-19 18:04:42,484 INFO L226 Difference]: Without dead ends: 20696 [2024-11-19 18:04:42,494 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 [2024-11-19 18:04:42,495 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 196 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:42,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 71 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:04:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20696 states. [2024-11-19 18:04:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20696 to 19771. [2024-11-19 18:04:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19771 states, 19770 states have (on average 1.0975720789074355) internal successors, (21699), 19770 states have internal predecessors, (21699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19771 states to 19771 states and 21699 transitions. [2024-11-19 18:04:42,667 INFO L78 Accepts]: Start accepts. Automaton has 19771 states and 21699 transitions. Word has length 414 [2024-11-19 18:04:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:42,668 INFO L471 AbstractCegarLoop]: Abstraction has 19771 states and 21699 transitions. [2024-11-19 18:04:42,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19771 states and 21699 transitions. [2024-11-19 18:04:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-19 18:04:42,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:42,676 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:42,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 18:04:42,676 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:42,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1627853402, now seen corresponding path program 1 times [2024-11-19 18:04:42,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:42,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528652877] [2024-11-19 18:04:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 143 proven. 229 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 18:04:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528652877] [2024-11-19 18:04:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528652877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666662038] [2024-11-19 18:04:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:43,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:43,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:43,079 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:43,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 18:04:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:43,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 18:04:43,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 248 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:44,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:04:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 248 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666662038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:04:46,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:04:46,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-19 18:04:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244864232] [2024-11-19 18:04:46,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:04:46,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 18:04:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:46,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 18:04:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-19 18:04:46,789 INFO L87 Difference]: Start difference. First operand 19771 states and 21699 transitions. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 11 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:52,600 INFO L93 Difference]: Finished difference Result 54514 states and 59559 transitions. [2024-11-19 18:04:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 18:04:52,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 11 states have internal predecessors, (970), 0 states have call successors, (0), 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 417 [2024-11-19 18:04:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:52,642 INFO L225 Difference]: With dead ends: 54514 [2024-11-19 18:04:52,642 INFO L226 Difference]: Without dead ends: 34745 [2024-11-19 18:04:52,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 18:04:52,657 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 3828 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7257 mSolverCounterSat, 1088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 8345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 7257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:52,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3828 Valid, 193 Invalid, 8345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1088 Valid, 7257 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-19 18:04:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34745 states. [2024-11-19 18:04:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34745 to 23265. [2024-11-19 18:04:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23265 states, 23264 states have (on average 1.075137551581843) internal successors, (25012), 23264 states have internal predecessors, (25012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23265 states to 23265 states and 25012 transitions. [2024-11-19 18:04:52,897 INFO L78 Accepts]: Start accepts. Automaton has 23265 states and 25012 transitions. Word has length 417 [2024-11-19 18:04:52,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:52,897 INFO L471 AbstractCegarLoop]: Abstraction has 23265 states and 25012 transitions. [2024-11-19 18:04:52,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 11 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 23265 states and 25012 transitions. [2024-11-19 18:04:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-19 18:04:52,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:52,909 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:52,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 18:04:53,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:53,110 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:53,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1101386183, now seen corresponding path program 1 times [2024-11-19 18:04:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:53,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698101649] [2024-11-19 18:04:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:53,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-19 18:04:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698101649] [2024-11-19 18:04:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698101649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:53,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:53,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:53,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296289782] [2024-11-19 18:04:53,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:53,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:53,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:53,557 INFO L87 Difference]: Start difference. First operand 23265 states and 25012 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:54,110 INFO L93 Difference]: Finished difference Result 45063 states and 48488 transitions. [2024-11-19 18:04:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:54,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 511 [2024-11-19 18:04:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:54,131 INFO L225 Difference]: With dead ends: 45063 [2024-11-19 18:04:54,131 INFO L226 Difference]: Without dead ends: 23642 [2024-11-19 18:04:54,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:54,238 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 66 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:54,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 158 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23642 states. [2024-11-19 18:04:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23642 to 22897. [2024-11-19 18:04:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22897 states, 22896 states have (on average 1.0722396925227113) internal successors, (24550), 22896 states have internal predecessors, (24550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22897 states to 22897 states and 24550 transitions. [2024-11-19 18:04:54,404 INFO L78 Accepts]: Start accepts. Automaton has 22897 states and 24550 transitions. Word has length 511 [2024-11-19 18:04:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:54,404 INFO L471 AbstractCegarLoop]: Abstraction has 22897 states and 24550 transitions. [2024-11-19 18:04:54,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 22897 states and 24550 transitions. [2024-11-19 18:04:54,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 18:04:54,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:54,414 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:54,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 18:04:54,415 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:54,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:54,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1677270036, now seen corresponding path program 1 times [2024-11-19 18:04:54,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912211608] [2024-11-19 18:04:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 514 proven. 3 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-19 18:04:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912211608] [2024-11-19 18:04:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912211608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573556640] [2024-11-19 18:04:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:54,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:54,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:54,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 18:04:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:55,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:04:55,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-19 18:04:55,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:55,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573556640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:55,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:55,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 18:04:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842899393] [2024-11-19 18:04:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:55,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:55,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:04:55,382 INFO L87 Difference]: Start difference. First operand 22897 states and 24550 transitions. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:56,174 INFO L93 Difference]: Finished difference Result 46335 states and 49686 transitions. [2024-11-19 18:04:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:56,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 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 512 [2024-11-19 18:04:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:56,197 INFO L225 Difference]: With dead ends: 46335 [2024-11-19 18:04:56,197 INFO L226 Difference]: Without dead ends: 23624 [2024-11-19 18:04:56,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:04:56,211 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 258 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:56,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 156 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23624 states. [2024-11-19 18:04:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23624 to 21411. [2024-11-19 18:04:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21411 states, 21410 states have (on average 1.0685660906118637) internal successors, (22878), 21410 states have internal predecessors, (22878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21411 states to 21411 states and 22878 transitions. [2024-11-19 18:04:56,474 INFO L78 Accepts]: Start accepts. Automaton has 21411 states and 22878 transitions. Word has length 512 [2024-11-19 18:04:56,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:56,475 INFO L471 AbstractCegarLoop]: Abstraction has 21411 states and 22878 transitions. [2024-11-19 18:04:56,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand 21411 states and 22878 transitions. [2024-11-19 18:04:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-19 18:04:56,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:56,487 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:56,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 18:04:56,688 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,SelfDestructingSolverStorable21 [2024-11-19 18:04:56,688 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:56,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1808437552, now seen corresponding path program 1 times [2024-11-19 18:04:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:56,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099283795] [2024-11-19 18:04:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:56,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 609 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099283795] [2024-11-19 18:04:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099283795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915591873] [2024-11-19 18:04:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:58,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:58,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:04:58,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 18:04:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:58,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:04:58,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-19 18:04:58,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915591873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-19 18:04:58,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764025124] [2024-11-19 18:04:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:58,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:58,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:58,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:04:58,545 INFO L87 Difference]: Start difference. First operand 21411 states and 22878 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:59,057 INFO L93 Difference]: Finished difference Result 43197 states and 46139 transitions. [2024-11-19 18:04:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:59,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 539 [2024-11-19 18:04:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:59,078 INFO L225 Difference]: With dead ends: 43197 [2024-11-19 18:04:59,078 INFO L226 Difference]: Without dead ends: 23446 [2024-11-19 18:04:59,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:04:59,091 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 91 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:59,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 338 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 18:04:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23446 states. [2024-11-19 18:04:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23446 to 21043. [2024-11-19 18:04:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21043 states, 21042 states have (on average 1.068814751449482) internal successors, (22490), 21042 states have internal predecessors, (22490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21043 states to 21043 states and 22490 transitions. [2024-11-19 18:04:59,262 INFO L78 Accepts]: Start accepts. Automaton has 21043 states and 22490 transitions. Word has length 539 [2024-11-19 18:04:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:59,263 INFO L471 AbstractCegarLoop]: Abstraction has 21043 states and 22490 transitions. [2024-11-19 18:04:59,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21043 states and 22490 transitions. [2024-11-19 18:04:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-11-19 18:04:59,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:59,277 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-19 18:04:59,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 18:04:59,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:59,479 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:59,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash 27903080, now seen corresponding path program 1 times [2024-11-19 18:04:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904030823] [2024-11-19 18:04:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 191 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-19 18:05:00,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904030823] [2024-11-19 18:05:00,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904030823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:05:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233843478] [2024-11-19 18:05:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:00,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:05:00,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:05:00,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:05:00,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 18:05:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:00,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:05:00,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:05:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 241 proven. 454 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-19 18:05:01,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:05:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 191 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-19 18:05:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233843478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:05:02,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:05:02,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-19 18:05:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169020136] [2024-11-19 18:05:02,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:05:02,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 18:05:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 18:05:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:05:02,722 INFO L87 Difference]: Start difference. First operand 21043 states and 22490 transitions. Second operand has 10 states, 10 states have (on average 80.6) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:05,020 INFO L93 Difference]: Finished difference Result 38746 states and 41220 transitions. [2024-11-19 18:05:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 18:05:05,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 80.6) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 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 572 [2024-11-19 18:05:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:05,054 INFO L225 Difference]: With dead ends: 38746 [2024-11-19 18:05:05,055 INFO L226 Difference]: Without dead ends: 38744 [2024-11-19 18:05:05,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:05:05,066 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 839 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 3617 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:05,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 151 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3617 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:05:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38744 states. [2024-11-19 18:05:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38744 to 13667. [2024-11-19 18:05:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13667 states, 13666 states have (on average 1.0715644665593445) internal successors, (14644), 13666 states have internal predecessors, (14644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13667 states to 13667 states and 14644 transitions. [2024-11-19 18:05:05,281 INFO L78 Accepts]: Start accepts. Automaton has 13667 states and 14644 transitions. Word has length 572 [2024-11-19 18:05:05,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:05,281 INFO L471 AbstractCegarLoop]: Abstraction has 13667 states and 14644 transitions. [2024-11-19 18:05:05,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.6) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13667 states and 14644 transitions. [2024-11-19 18:05:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-19 18:05:05,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:05,291 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:05,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 18:05:05,491 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,SelfDestructingSolverStorable23 [2024-11-19 18:05:05,491 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:05,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:05,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1930042227, now seen corresponding path program 1 times [2024-11-19 18:05:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:05,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601087584] [2024-11-19 18:05:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 902 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-11-19 18:05:05,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:05,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601087584] [2024-11-19 18:05:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601087584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:05,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:05,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893430956] [2024-11-19 18:05:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:05,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:05:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:05:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:05:05,966 INFO L87 Difference]: Start difference. First operand 13667 states and 14644 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:06,862 INFO L93 Difference]: Finished difference Result 30474 states and 32582 transitions. [2024-11-19 18:05:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:05:06,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 586 [2024-11-19 18:05:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:06,876 INFO L225 Difference]: With dead ends: 30474 [2024-11-19 18:05:06,876 INFO L226 Difference]: Without dead ends: 16071 [2024-11-19 18:05:06,884 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 [2024-11-19 18:05:06,885 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 185 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:06,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 69 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:05:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16071 states. [2024-11-19 18:05:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16071 to 13851. [2024-11-19 18:05:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13851 states, 13850 states have (on average 1.0699638989169675) internal successors, (14819), 13850 states have internal predecessors, (14819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13851 states to 13851 states and 14819 transitions. [2024-11-19 18:05:07,007 INFO L78 Accepts]: Start accepts. Automaton has 13851 states and 14819 transitions. Word has length 586 [2024-11-19 18:05:07,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:07,007 INFO L471 AbstractCegarLoop]: Abstraction has 13851 states and 14819 transitions. [2024-11-19 18:05:07,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 13851 states and 14819 transitions. [2024-11-19 18:05:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-11-19 18:05:07,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:07,016 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:05:07,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 18:05:07,016 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:07,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1100874474, now seen corresponding path program 1 times [2024-11-19 18:05:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902073892] [2024-11-19 18:05:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 890 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-19 18:05:07,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:07,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902073892] [2024-11-19 18:05:07,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902073892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:07,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:07,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:07,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872295875] [2024-11-19 18:05:07,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:07,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:07,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:07,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:07,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:07,539 INFO L87 Difference]: Start difference. First operand 13851 states and 14819 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:08,144 INFO L93 Difference]: Finished difference Result 28624 states and 30520 transitions. [2024-11-19 18:05:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:08,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 704 [2024-11-19 18:05:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:08,163 INFO L225 Difference]: With dead ends: 28624 [2024-11-19 18:05:08,163 INFO L226 Difference]: Without dead ends: 14775 [2024-11-19 18:05:08,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:08,172 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 123 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:08,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 63 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:05:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14775 states. [2024-11-19 18:05:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14775 to 12747. [2024-11-19 18:05:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12747 states, 12746 states have (on average 1.0648831005805743) internal successors, (13573), 12746 states have internal predecessors, (13573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12747 states to 12747 states and 13573 transitions. [2024-11-19 18:05:08,289 INFO L78 Accepts]: Start accepts. Automaton has 12747 states and 13573 transitions. Word has length 704 [2024-11-19 18:05:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:08,290 INFO L471 AbstractCegarLoop]: Abstraction has 12747 states and 13573 transitions. [2024-11-19 18:05:08,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 12747 states and 13573 transitions. [2024-11-19 18:05:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2024-11-19 18:05:08,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:08,299 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:08,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 18:05:08,299 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:08,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1565644488, now seen corresponding path program 1 times [2024-11-19 18:05:08,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:08,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642888963] [2024-11-19 18:05:08,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:08,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 1314 proven. 73 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2024-11-19 18:05:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642888963] [2024-11-19 18:05:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642888963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:05:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273841043] [2024-11-19 18:05:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:05:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:05:09,410 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) [2024-11-19 18:05:09,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 18:05:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:09,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 18:05:09,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:05:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 975 proven. 496 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-19 18:05:11,468 INFO L311 TraceCheckSpWp]: Computing backward predicates...