./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/eca-rers2012/Problem11_label46.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 201cd0b9f7312851770c009ac8fff4b46d270c8816b37eb4df1c49891060a8fb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:04:53,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:04:53,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:04:53,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:04:53,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:04:53,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:04:53,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:04:53,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:04:53,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:04:53,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:04:53,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:04:53,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:04:53,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:04:53,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:04:53,345 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:04:53,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:04:53,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:04:53,347 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:04:53,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:04:53,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:04:53,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:04:53,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:04:53,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:04:53,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:04:53,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:04:53,348 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:04:53,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:04:53,349 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:04:53,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:04:53,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:04:53,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:04:53,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:04:53,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:04:53,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:04:53,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:04:53,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:04:53,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:04:53,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:04:53,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:04:53,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:04:53,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:04:53,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:04:53,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 201cd0b9f7312851770c009ac8fff4b46d270c8816b37eb4df1c49891060a8fb [2024-11-21 22:04:53,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:04:53,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:04:53,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:04:53,642 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:04:53,642 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:04:53,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label46.c [2024-11-21 22:04:54,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:04:55,206 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:04:55,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label46.c [2024-11-21 22:04:55,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9f955b3/2898b7b68bc44751b88bd660d6efc79b/FLAG470dbb906 [2024-11-21 22:04:55,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9f955b3/2898b7b68bc44751b88bd660d6efc79b [2024-11-21 22:04:55,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:04:55,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:04:55,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:04:55,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:04:55,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:04:55,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:04:55" (1/1) ... [2024-11-21 22:04:55,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea06780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55, skipping insertion in model container [2024-11-21 22:04:55,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:04:55" (1/1) ... [2024-11-21 22:04:55,599 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:04:55,832 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_label46.c[8949,8962] [2024-11-21 22:04:55,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:04:55,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:04:56,018 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_label46.c[8949,8962] [2024-11-21 22:04:56,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:04:56,135 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:04:56,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56 WrapperNode [2024-11-21 22:04:56,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:04:56,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:04:56,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:04:56,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:04:56,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,234 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-21 22:04:56,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:04:56,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:04:56,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:04:56,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:04:56,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,303 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]. [2024-11-21 22:04:56,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:04:56,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:04:56,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:04:56,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:04:56,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (1/1) ... [2024-11-21 22:04:56,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:04:56,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:04:56,398 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) [2024-11-21 22:04:56,405 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 [2024-11-21 22:04:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:04:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:04:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:04:56,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:04:56,505 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:04:56,507 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:04:57,797 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-21 22:04:57,798 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:04:57,812 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:04:57,813 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:04:57,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:04:57 BoogieIcfgContainer [2024-11-21 22:04:57,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:04:57,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:04:57,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:04:57,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:04:57,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:04:55" (1/3) ... [2024-11-21 22:04:57,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494efef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:04:57, skipping insertion in model container [2024-11-21 22:04:57,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:56" (2/3) ... [2024-11-21 22:04:57,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494efef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:04:57, skipping insertion in model container [2024-11-21 22:04:57,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:04:57" (3/3) ... [2024-11-21 22:04:57,820 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label46.c [2024-11-21 22:04:57,834 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:04:57,834 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:04:57,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:04:57,888 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;@54621dfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:04:57,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:04:57,893 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) [2024-11-21 22:04:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-21 22:04:57,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:04:57,900 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:04:57,900 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:04:57,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:04:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times [2024-11-21 22:04:57,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:04:57,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47415624] [2024-11-21 22:04:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:04:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:04:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:04:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:04:58,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:04:58,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47415624] [2024-11-21 22:04:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47415624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:04:58,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:04:58,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:04:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834017093] [2024-11-21 22:04:58,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:04:58,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:04:58,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:04:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:04:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:04:58,341 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 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:04:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:04:59,183 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2024-11-21 22:04:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:04:59,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-21 22:04:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:04:59,194 INFO L225 Difference]: With dead ends: 776 [2024-11-21 22:04:59,194 INFO L226 Difference]: Without dead ends: 413 [2024-11-21 22:04:59,197 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 [2024-11-21 22:04:59,201 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 165 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:04:59,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 196 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:04:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-21 22:04:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 411. [2024-11-21 22:04:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.4585365853658536) internal successors, (598), 410 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:04:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 598 transitions. [2024-11-21 22:04:59,247 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 598 transitions. Word has length 62 [2024-11-21 22:04:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:04:59,251 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 598 transitions. [2024-11-21 22:04:59,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:04:59,252 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 598 transitions. [2024-11-21 22:04:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-21 22:04:59,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:04:59,259 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:04:59,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:04:59,259 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:04:59,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:04:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1066754174, now seen corresponding path program 1 times [2024-11-21 22:04:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:04:59,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678215465] [2024-11-21 22:04:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:04:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:04:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:04:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:04:59,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:04:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678215465] [2024-11-21 22:04:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678215465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:04:59,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:04:59,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:04:59,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740111605] [2024-11-21 22:04:59,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:04:59,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:04:59,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:04:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:04:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:04:59,486 INFO L87 Difference]: Start difference. First operand 411 states and 598 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:00,356 INFO L93 Difference]: Finished difference Result 1209 states and 1765 transitions. [2024-11-21 22:05:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:00,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-11-21 22:05:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:00,362 INFO L225 Difference]: With dead ends: 1209 [2024-11-21 22:05:00,362 INFO L226 Difference]: Without dead ends: 800 [2024-11-21 22:05:00,364 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 [2024-11-21 22:05:00,367 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:00,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:05:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-21 22:05:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 787. [2024-11-21 22:05:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 1.3842239185750635) internal successors, (1088), 786 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1088 transitions. [2024-11-21 22:05:00,389 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1088 transitions. Word has length 130 [2024-11-21 22:05:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:00,390 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 1088 transitions. [2024-11-21 22:05:00,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:00,391 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1088 transitions. [2024-11-21 22:05:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-21 22:05:00,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:00,393 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:00,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:05:00,393 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:00,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1046029789, now seen corresponding path program 1 times [2024-11-21 22:05:00,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:00,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421594733] [2024-11-21 22:05:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:05:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:00,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421594733] [2024-11-21 22:05:00,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421594733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:00,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:00,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:05:00,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428118347] [2024-11-21 22:05:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:00,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:00,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:00,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:00,657 INFO L87 Difference]: Start difference. First operand 787 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:01,240 INFO L93 Difference]: Finished difference Result 1942 states and 2629 transitions. [2024-11-21 22:05:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:01,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-11-21 22:05:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:01,244 INFO L225 Difference]: With dead ends: 1942 [2024-11-21 22:05:01,244 INFO L226 Difference]: Without dead ends: 1157 [2024-11-21 22:05:01,245 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 [2024-11-21 22:05:01,246 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:01,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-11-21 22:05:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2024-11-21 22:05:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.277056277056277) internal successors, (1475), 1155 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1475 transitions. [2024-11-21 22:05:01,267 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1475 transitions. Word has length 132 [2024-11-21 22:05:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:01,267 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1475 transitions. [2024-11-21 22:05:01,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1475 transitions. [2024-11-21 22:05:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-21 22:05:01,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:01,270 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:01,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:05:01,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:01,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1696825530, now seen corresponding path program 1 times [2024-11-21 22:05:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757892523] [2024-11-21 22:05:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:05:01,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757892523] [2024-11-21 22:05:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757892523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:01,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:01,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170529351] [2024-11-21 22:05:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:01,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:01,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:01,479 INFO L87 Difference]: Start difference. First operand 1156 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:02,079 INFO L93 Difference]: Finished difference Result 2691 states and 3513 transitions. [2024-11-21 22:05:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2024-11-21 22:05:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:02,084 INFO L225 Difference]: With dead ends: 2691 [2024-11-21 22:05:02,085 INFO L226 Difference]: Without dead ends: 1721 [2024-11-21 22:05:02,086 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 [2024-11-21 22:05:02,087 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 144 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:02,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 336 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-21 22:05:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1528. [2024-11-21 22:05:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 1.260641781270465) internal successors, (1925), 1527 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1925 transitions. [2024-11-21 22:05:02,109 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1925 transitions. Word has length 174 [2024-11-21 22:05:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:02,110 INFO L471 AbstractCegarLoop]: Abstraction has 1528 states and 1925 transitions. [2024-11-21 22:05:02,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1925 transitions. [2024-11-21 22:05:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-21 22:05:02,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:02,116 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:02,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:05:02,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:02,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 800976377, now seen corresponding path program 1 times [2024-11-21 22:05:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215614239] [2024-11-21 22:05:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-21 22:05:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:02,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215614239] [2024-11-21 22:05:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215614239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:02,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533828146] [2024-11-21 22:05:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:02,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:02,406 INFO L87 Difference]: Start difference. First operand 1528 states and 1925 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:03,024 INFO L93 Difference]: Finished difference Result 4160 states and 5315 transitions. [2024-11-21 22:05:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:03,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 244 [2024-11-21 22:05:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:03,032 INFO L225 Difference]: With dead ends: 4160 [2024-11-21 22:05:03,032 INFO L226 Difference]: Without dead ends: 2634 [2024-11-21 22:05:03,034 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 [2024-11-21 22:05:03,037 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 152 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:03,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 352 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-21 22:05:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2634. [2024-11-21 22:05:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 1.2468666919863274) internal successors, (3283), 2633 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 3283 transitions. [2024-11-21 22:05:03,069 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 3283 transitions. Word has length 244 [2024-11-21 22:05:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:03,070 INFO L471 AbstractCegarLoop]: Abstraction has 2634 states and 3283 transitions. [2024-11-21 22:05:03,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 3283 transitions. [2024-11-21 22:05:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-21 22:05:03,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:03,074 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:03,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:05:03,074 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:03,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash 531389150, now seen corresponding path program 1 times [2024-11-21 22:05:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:03,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534443539] [2024-11-21 22:05:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-21 22:05:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534443539] [2024-11-21 22:05:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534443539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:03,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:03,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:05:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737648796] [2024-11-21 22:05:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:03,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:03,223 INFO L87 Difference]: Start difference. First operand 2634 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:03,798 INFO L93 Difference]: Finished difference Result 6553 states and 8157 transitions. [2024-11-21 22:05:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2024-11-21 22:05:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:03,811 INFO L225 Difference]: With dead ends: 6553 [2024-11-21 22:05:03,811 INFO L226 Difference]: Without dead ends: 3921 [2024-11-21 22:05:03,814 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 [2024-11-21 22:05:03,816 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:03,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 155 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:05:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2024-11-21 22:05:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3185. [2024-11-21 22:05:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 1.1699120603015076) internal successors, (3725), 3184 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3725 transitions. [2024-11-21 22:05:03,860 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3725 transitions. Word has length 255 [2024-11-21 22:05:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:03,860 INFO L471 AbstractCegarLoop]: Abstraction has 3185 states and 3725 transitions. [2024-11-21 22:05:03,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3725 transitions. [2024-11-21 22:05:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-21 22:05:03,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:03,863 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:03,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:05:03,867 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:03,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1060462334, now seen corresponding path program 1 times [2024-11-21 22:05:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252752771] [2024-11-21 22:05:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-21 22:05:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252752771] [2024-11-21 22:05:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252752771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:04,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:04,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208447491] [2024-11-21 22:05:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:04,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:04,179 INFO L87 Difference]: Start difference. First operand 3185 states and 3725 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:04,789 INFO L93 Difference]: Finished difference Result 7108 states and 8338 transitions. [2024-11-21 22:05:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 271 [2024-11-21 22:05:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:04,798 INFO L225 Difference]: With dead ends: 7108 [2024-11-21 22:05:04,798 INFO L226 Difference]: Without dead ends: 3925 [2024-11-21 22:05:04,801 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 [2024-11-21 22:05:04,802 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:04,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 372 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2024-11-21 22:05:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3736. [2024-11-21 22:05:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3735 states have (on average 1.1606425702811245) internal successors, (4335), 3735 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 4335 transitions. [2024-11-21 22:05:04,843 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 4335 transitions. Word has length 271 [2024-11-21 22:05:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:04,843 INFO L471 AbstractCegarLoop]: Abstraction has 3736 states and 4335 transitions. [2024-11-21 22:05:04,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 4335 transitions. [2024-11-21 22:05:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-21 22:05:04,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:04,847 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:04,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 22:05:04,847 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:04,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash 639036590, now seen corresponding path program 1 times [2024-11-21 22:05:04,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:04,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544332783] [2024-11-21 22:05:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:04,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-21 22:05:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544332783] [2024-11-21 22:05:05,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544332783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:05,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:05,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:05,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852237759] [2024-11-21 22:05:05,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:05,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:05,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:05,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:05,073 INFO L87 Difference]: Start difference. First operand 3736 states and 4335 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:05,626 INFO L93 Difference]: Finished difference Result 8579 states and 9918 transitions. [2024-11-21 22:05:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:05,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 284 [2024-11-21 22:05:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:05,639 INFO L225 Difference]: With dead ends: 8579 [2024-11-21 22:05:05,639 INFO L226 Difference]: Without dead ends: 4845 [2024-11-21 22:05:05,642 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 [2024-11-21 22:05:05,645 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 158 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:05,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 390 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:05:05,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2024-11-21 22:05:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4844. [2024-11-21 22:05:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4843 states have (on average 1.1525913689861655) internal successors, (5582), 4843 states have internal predecessors, (5582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 5582 transitions. [2024-11-21 22:05:05,705 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 5582 transitions. Word has length 284 [2024-11-21 22:05:05,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:05,706 INFO L471 AbstractCegarLoop]: Abstraction has 4844 states and 5582 transitions. [2024-11-21 22:05:05,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 5582 transitions. [2024-11-21 22:05:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-21 22:05:05,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:05,710 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:05,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:05:05,710 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:05,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1603746634, now seen corresponding path program 1 times [2024-11-21 22:05:05,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:05,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623290811] [2024-11-21 22:05:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:05,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-21 22:05:05,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623290811] [2024-11-21 22:05:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623290811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:05,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:05,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:05,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474292406] [2024-11-21 22:05:05,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:05,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:05,899 INFO L87 Difference]: Start difference. First operand 4844 states and 5582 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:06,473 INFO L93 Difference]: Finished difference Result 10238 states and 11865 transitions. [2024-11-21 22:05:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:06,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 293 [2024-11-21 22:05:06,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:06,488 INFO L225 Difference]: With dead ends: 10238 [2024-11-21 22:05:06,489 INFO L226 Difference]: Without dead ends: 5764 [2024-11-21 22:05:06,494 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 [2024-11-21 22:05:06,495 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 130 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:06,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 384 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:05:06,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2024-11-21 22:05:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5212. [2024-11-21 22:05:06,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 5211 states have (on average 1.146421032431395) internal successors, (5974), 5211 states have internal predecessors, (5974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 5974 transitions. [2024-11-21 22:05:06,567 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 5974 transitions. Word has length 293 [2024-11-21 22:05:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:06,567 INFO L471 AbstractCegarLoop]: Abstraction has 5212 states and 5974 transitions. [2024-11-21 22:05:06,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 5974 transitions. [2024-11-21 22:05:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-21 22:05:06,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:06,573 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:06,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:05:06,573 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:06,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash -971055813, now seen corresponding path program 1 times [2024-11-21 22:05:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310815470] [2024-11-21 22:05:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-21 22:05:06,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310815470] [2024-11-21 22:05:06,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310815470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:06,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293490785] [2024-11-21 22:05:06,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:06,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:06,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:06,781 INFO L87 Difference]: Start difference. First operand 5212 states and 5974 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:07,440 INFO L93 Difference]: Finished difference Result 12262 states and 14255 transitions. [2024-11-21 22:05:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 321 [2024-11-21 22:05:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:07,457 INFO L225 Difference]: With dead ends: 12262 [2024-11-21 22:05:07,458 INFO L226 Difference]: Without dead ends: 7420 [2024-11-21 22:05:07,462 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 [2024-11-21 22:05:07,463 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 147 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:07,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 342 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2024-11-21 22:05:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 7235. [2024-11-21 22:05:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 1.1385125794857618) internal successors, (8236), 7234 states have internal predecessors, (8236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:07,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 8236 transitions. [2024-11-21 22:05:07,555 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 8236 transitions. Word has length 321 [2024-11-21 22:05:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:07,556 INFO L471 AbstractCegarLoop]: Abstraction has 7235 states and 8236 transitions. [2024-11-21 22:05:07,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 8236 transitions. [2024-11-21 22:05:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-21 22:05:07,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:07,566 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, 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, 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] [2024-11-21 22:05:07,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:05:07,566 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:07,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:07,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1551061136, now seen corresponding path program 1 times [2024-11-21 22:05:07,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:07,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680243965] [2024-11-21 22:05:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 417 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-21 22:05:07,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680243965] [2024-11-21 22:05:07,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680243965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:07,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:07,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:07,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151578811] [2024-11-21 22:05:07,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:07,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:07,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:07,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:07,841 INFO L87 Difference]: Start difference. First operand 7235 states and 8236 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:08,606 INFO L93 Difference]: Finished difference Result 15954 states and 18177 transitions. [2024-11-21 22:05:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 434 [2024-11-21 22:05:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:08,697 INFO L225 Difference]: With dead ends: 15954 [2024-11-21 22:05:08,698 INFO L226 Difference]: Without dead ends: 8905 [2024-11-21 22:05:08,702 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 [2024-11-21 22:05:08,703 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 67 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:08,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 180 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:05:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2024-11-21 22:05:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8891. [2024-11-21 22:05:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8891 states, 8890 states have (on average 1.1227221597300336) internal successors, (9981), 8890 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8891 states to 8891 states and 9981 transitions. [2024-11-21 22:05:08,780 INFO L78 Accepts]: Start accepts. Automaton has 8891 states and 9981 transitions. Word has length 434 [2024-11-21 22:05:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:08,781 INFO L471 AbstractCegarLoop]: Abstraction has 8891 states and 9981 transitions. [2024-11-21 22:05:08,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8891 states and 9981 transitions. [2024-11-21 22:05:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-21 22:05:08,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:08,795 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:08,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:05:08,796 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:08,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash 531016907, now seen corresponding path program 1 times [2024-11-21 22:05:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323752604] [2024-11-21 22:05:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-21 22:05:08,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:08,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323752604] [2024-11-21 22:05:08,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323752604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:08,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:08,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:08,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139203444] [2024-11-21 22:05:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:08,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:08,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:08,966 INFO L87 Difference]: Start difference. First operand 8891 states and 9981 transitions. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:09,601 INFO L93 Difference]: Finished difference Result 18699 states and 21106 transitions. [2024-11-21 22:05:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:09,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 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 486 [2024-11-21 22:05:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:09,613 INFO L225 Difference]: With dead ends: 18699 [2024-11-21 22:05:09,613 INFO L226 Difference]: Without dead ends: 10178 [2024-11-21 22:05:09,619 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 [2024-11-21 22:05:09,620 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 70 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:09,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 354 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10178 states. [2024-11-21 22:05:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10178 to 9994. [2024-11-21 22:05:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9994 states, 9993 states have (on average 1.1252877013909737) internal successors, (11245), 9993 states have internal predecessors, (11245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9994 states to 9994 states and 11245 transitions. [2024-11-21 22:05:09,693 INFO L78 Accepts]: Start accepts. Automaton has 9994 states and 11245 transitions. Word has length 486 [2024-11-21 22:05:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:09,693 INFO L471 AbstractCegarLoop]: Abstraction has 9994 states and 11245 transitions. [2024-11-21 22:05:09,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand 9994 states and 11245 transitions. [2024-11-21 22:05:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-21 22:05:09,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:09,704 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, 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, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:05:09,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 22:05:09,704 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:09,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash -236333549, now seen corresponding path program 1 times [2024-11-21 22:05:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159838916] [2024-11-21 22:05:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-21 22:05:10,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159838916] [2024-11-21 22:05:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159838916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:10,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416021957] [2024-11-21 22:05:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:10,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:10,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:10,098 INFO L87 Difference]: Start difference. First operand 9994 states and 11245 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:10,729 INFO L93 Difference]: Finished difference Result 22027 states and 24894 transitions. [2024-11-21 22:05:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 522 [2024-11-21 22:05:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:10,745 INFO L225 Difference]: With dead ends: 22027 [2024-11-21 22:05:10,746 INFO L226 Difference]: Without dead ends: 12403 [2024-11-21 22:05:10,755 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 [2024-11-21 22:05:10,755 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 139 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:10,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 133 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12403 states. [2024-11-21 22:05:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12403 to 12215. [2024-11-21 22:05:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12215 states, 12214 states have (on average 1.1200261994432619) internal successors, (13680), 12214 states have internal predecessors, (13680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12215 states to 12215 states and 13680 transitions. [2024-11-21 22:05:10,866 INFO L78 Accepts]: Start accepts. Automaton has 12215 states and 13680 transitions. Word has length 522 [2024-11-21 22:05:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:10,866 INFO L471 AbstractCegarLoop]: Abstraction has 12215 states and 13680 transitions. [2024-11-21 22:05:10,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 12215 states and 13680 transitions. [2024-11-21 22:05:10,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-21 22:05:10,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:10,881 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:10,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 22:05:10,881 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:10,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash 941049859, now seen corresponding path program 1 times [2024-11-21 22:05:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727402733] [2024-11-21 22:05:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:10,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-21 22:05:11,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:11,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727402733] [2024-11-21 22:05:11,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727402733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:11,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:11,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:11,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674923419] [2024-11-21 22:05:11,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:11,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:11,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:11,204 INFO L87 Difference]: Start difference. First operand 12215 states and 13680 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:11,818 INFO L93 Difference]: Finished difference Result 27191 states and 30476 transitions. [2024-11-21 22:05:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:11,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 526 [2024-11-21 22:05:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:11,838 INFO L225 Difference]: With dead ends: 27191 [2024-11-21 22:05:11,838 INFO L226 Difference]: Without dead ends: 15346 [2024-11-21 22:05:11,848 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 [2024-11-21 22:05:11,849 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:11,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 78 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states. [2024-11-21 22:05:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 14415. [2024-11-21 22:05:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14415 states, 14414 states have (on average 1.1133620091577632) internal successors, (16048), 14414 states have internal predecessors, (16048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14415 states to 14415 states and 16048 transitions. [2024-11-21 22:05:12,011 INFO L78 Accepts]: Start accepts. Automaton has 14415 states and 16048 transitions. Word has length 526 [2024-11-21 22:05:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:12,012 INFO L471 AbstractCegarLoop]: Abstraction has 14415 states and 16048 transitions. [2024-11-21 22:05:12,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:12,012 INFO L276 IsEmpty]: Start isEmpty. Operand 14415 states and 16048 transitions. [2024-11-21 22:05:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-21 22:05:12,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:12,025 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:05:12,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:05:12,025 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:12,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash -540773030, now seen corresponding path program 1 times [2024-11-21 22:05:12,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:12,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189760833] [2024-11-21 22:05:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 320 proven. 406 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-21 22:05:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189760833] [2024-11-21 22:05:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189760833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:05:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545658578] [2024-11-21 22:05:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:13,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:05:13,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:05:13,067 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) [2024-11-21 22:05:13,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:05:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:13,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 22:05:13,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:05:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 320 proven. 406 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-21 22:05:15,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:05:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 645 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-21 22:05:16,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545658578] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:05:16,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:05:16,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2024-11-21 22:05:16,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233981864] [2024-11-21 22:05:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:16,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:05:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:05:16,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:05:16,008 INFO L87 Difference]: Start difference. First operand 14415 states and 16048 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:17,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:17,045 INFO L93 Difference]: Finished difference Result 29934 states and 33327 transitions. [2024-11-21 22:05:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:05:17,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 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 532 [2024-11-21 22:05:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:17,059 INFO L225 Difference]: With dead ends: 29934 [2024-11-21 22:05:17,059 INFO L226 Difference]: Without dead ends: 15889 [2024-11-21 22:05:17,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1059 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:05:17,066 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 237 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:17,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 62 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 22:05:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15889 states. [2024-11-21 22:05:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15889 to 11839. [2024-11-21 22:05:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11839 states, 11838 states have (on average 1.1196992735259335) internal successors, (13255), 11838 states have internal predecessors, (13255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11839 states to 11839 states and 13255 transitions. [2024-11-21 22:05:17,167 INFO L78 Accepts]: Start accepts. Automaton has 11839 states and 13255 transitions. Word has length 532 [2024-11-21 22:05:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:17,168 INFO L471 AbstractCegarLoop]: Abstraction has 11839 states and 13255 transitions. [2024-11-21 22:05:17,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11839 states and 13255 transitions. [2024-11-21 22:05:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-21 22:05:17,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:17,181 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:17,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:05:17,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-21 22:05:17,386 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:17,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:17,386 INFO L85 PathProgramCache]: Analyzing trace with hash -203637611, now seen corresponding path program 1 times [2024-11-21 22:05:17,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:17,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203606240] [2024-11-21 22:05:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-21 22:05:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203606240] [2024-11-21 22:05:17,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203606240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:17,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:17,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125743981] [2024-11-21 22:05:17,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:17,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:05:17,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:05:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:05:17,961 INFO L87 Difference]: Start difference. First operand 11839 states and 13255 transitions. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:19,095 INFO L93 Difference]: Finished difference Result 29949 states and 33348 transitions. [2024-11-21 22:05:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:05:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 598 [2024-11-21 22:05:19,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:19,196 INFO L225 Difference]: With dead ends: 29949 [2024-11-21 22:05:19,200 INFO L226 Difference]: Without dead ends: 18112 [2024-11-21 22:05:19,205 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 [2024-11-21 22:05:19,210 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 175 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:19,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 82 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 22:05:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18112 states. [2024-11-21 22:05:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18112 to 16445. [2024-11-21 22:05:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16445 states, 16444 states have (on average 1.1089151058136706) internal successors, (18235), 16444 states have internal predecessors, (18235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16445 states to 16445 states and 18235 transitions. [2024-11-21 22:05:19,457 INFO L78 Accepts]: Start accepts. Automaton has 16445 states and 18235 transitions. Word has length 598 [2024-11-21 22:05:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:19,457 INFO L471 AbstractCegarLoop]: Abstraction has 16445 states and 18235 transitions. [2024-11-21 22:05:19,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 16445 states and 18235 transitions. [2024-11-21 22:05:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2024-11-21 22:05:19,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:19,473 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, 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, 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, 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] [2024-11-21 22:05:19,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-21 22:05:19,474 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:19,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1263406380, now seen corresponding path program 1 times [2024-11-21 22:05:19,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:19,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414466910] [2024-11-21 22:05:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1313 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2024-11-21 22:05:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:19,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414466910] [2024-11-21 22:05:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414466910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:19,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:19,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:19,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915967140] [2024-11-21 22:05:19,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:19,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:19,698 INFO L87 Difference]: Start difference. First operand 16445 states and 18235 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:20,282 INFO L93 Difference]: Finished difference Result 34913 states and 38698 transitions. [2024-11-21 22:05:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:20,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 649 [2024-11-21 22:05:20,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:20,298 INFO L225 Difference]: With dead ends: 34913 [2024-11-21 22:05:20,298 INFO L226 Difference]: Without dead ends: 18838 [2024-11-21 22:05:20,308 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 [2024-11-21 22:05:20,309 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 147 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:20,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 128 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:05:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18838 states. [2024-11-21 22:05:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18838 to 16261. [2024-11-21 22:05:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16261 states, 16260 states have (on average 1.1028290282902828) internal successors, (17932), 16260 states have internal predecessors, (17932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16261 states to 16261 states and 17932 transitions. [2024-11-21 22:05:20,606 INFO L78 Accepts]: Start accepts. Automaton has 16261 states and 17932 transitions. Word has length 649 [2024-11-21 22:05:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:20,606 INFO L471 AbstractCegarLoop]: Abstraction has 16261 states and 17932 transitions. [2024-11-21 22:05:20,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 16261 states and 17932 transitions. [2024-11-21 22:05:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2024-11-21 22:05:20,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:20,626 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:05:20,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-21 22:05:20,626 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:20,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash -437725028, now seen corresponding path program 1 times [2024-11-21 22:05:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:20,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366368575] [2024-11-21 22:05:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-21 22:05:20,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:20,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366368575] [2024-11-21 22:05:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366368575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:20,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079518744] [2024-11-21 22:05:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:20,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:20,978 INFO L87 Difference]: Start difference. First operand 16261 states and 17932 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:21,680 INFO L93 Difference]: Finished difference Result 33623 states and 37063 transitions. [2024-11-21 22:05:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:21,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 682 [2024-11-21 22:05:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:21,697 INFO L225 Difference]: With dead ends: 33623 [2024-11-21 22:05:21,698 INFO L226 Difference]: Without dead ends: 17732 [2024-11-21 22:05:21,710 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 [2024-11-21 22:05:21,711 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 114 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:21,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 144 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:05:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17732 states. [2024-11-21 22:05:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17732 to 15515. [2024-11-21 22:05:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15515 states, 15514 states have (on average 1.0981049374758283) internal successors, (17036), 15514 states have internal predecessors, (17036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15515 states to 15515 states and 17036 transitions. [2024-11-21 22:05:21,916 INFO L78 Accepts]: Start accepts. Automaton has 15515 states and 17036 transitions. Word has length 682 [2024-11-21 22:05:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:21,917 INFO L471 AbstractCegarLoop]: Abstraction has 15515 states and 17036 transitions. [2024-11-21 22:05:21,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 15515 states and 17036 transitions. [2024-11-21 22:05:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2024-11-21 22:05:21,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:05:21,937 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, 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, 5, 5, 5, 5, 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, 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] [2024-11-21 22:05:21,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-21 22:05:21,937 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:05:21,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:05:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash 519647050, now seen corresponding path program 1 times [2024-11-21 22:05:21,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:05:21,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467379111] [2024-11-21 22:05:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:05:21,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:05:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:05:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 1154 proven. 0 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-11-21 22:05:22,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:05:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467379111] [2024-11-21 22:05:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467379111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:05:22,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:05:22,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:05:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796175317] [2024-11-21 22:05:22,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:05:22,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:05:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:05:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:05:22,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:05:22,311 INFO L87 Difference]: Start difference. First operand 15515 states and 17036 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:22,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:05:22,921 INFO L93 Difference]: Finished difference Result 30471 states and 33382 transitions. [2024-11-21 22:05:22,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:05:22,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 731 [2024-11-21 22:05:22,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:05:22,923 INFO L225 Difference]: With dead ends: 30471 [2024-11-21 22:05:22,923 INFO L226 Difference]: Without dead ends: 0 [2024-11-21 22:05:22,933 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 [2024-11-21 22:05:22,933 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 46 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:05:22,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 346 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 22:05:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-21 22:05:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-21 22:05:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-21 22:05:22,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 731 [2024-11-21 22:05:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:05:22,935 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-21 22:05:22,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:05:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-21 22:05:22,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-21 22:05:22,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-21 22:05:22,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-21 22:05:22,939 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:05:22,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-21 22:05:28,806 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-21 22:05:28,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:05:28 BoogieIcfgContainer [2024-11-21 22:05:28,822 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-21 22:05:28,823 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-21 22:05:28,823 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-21 22:05:28,823 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-21 22:05:28,823 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:04:57" (3/4) ... [2024-11-21 22:05:28,825 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-21 22:05:28,839 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-21 22:05:28,840 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-21 22:05:28,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-21 22:05:28,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-21 22:05:28,959 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-21 22:05:28,959 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-21 22:05:28,959 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-21 22:05:28,960 INFO L158 Benchmark]: Toolchain (without parser) took 33419.52ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 93.5MB in the beginning and 987.3MB in the end (delta: -893.8MB). Peak memory consumption was 462.9MB. Max. memory is 16.1GB. [2024-11-21 22:05:28,960 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-21 22:05:28,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.59ms. Allocated memory was 167.8MB in the beginning and 213.9MB in the end (delta: 46.1MB). Free memory was 93.2MB in the beginning and 144.3MB in the end (delta: -51.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2024-11-21 22:05:28,960 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.23ms. Allocated memory is still 213.9MB. Free memory was 144.3MB in the beginning and 126.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-21 22:05:28,963 INFO L158 Benchmark]: Boogie Preprocessor took 127.80ms. Allocated memory is still 213.9MB. Free memory was 126.5MB in the beginning and 101.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-21 22:05:28,964 INFO L158 Benchmark]: RCFGBuilder took 1449.42ms. Allocated memory is still 213.9MB. Free memory was 101.4MB in the beginning and 123.7MB in the end (delta: -22.4MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2024-11-21 22:05:28,964 INFO L158 Benchmark]: TraceAbstraction took 31007.61ms. Allocated memory was 213.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 122.7MB in the beginning and 1.0GB in the end (delta: -881.4MB). Peak memory consumption was 893.9MB. Max. memory is 16.1GB. [2024-11-21 22:05:28,964 INFO L158 Benchmark]: Witness Printer took 136.40ms. Allocated memory is still 1.5GB. Free memory was 1.0GB in the beginning and 987.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-21 22:05:28,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 594.59ms. Allocated memory was 167.8MB in the beginning and 213.9MB in the end (delta: 46.1MB). Free memory was 93.2MB in the beginning and 144.3MB in the end (delta: -51.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.23ms. Allocated memory is still 213.9MB. Free memory was 144.3MB in the beginning and 126.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.80ms. Allocated memory is still 213.9MB. Free memory was 126.5MB in the beginning and 101.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1449.42ms. Allocated memory is still 213.9MB. Free memory was 101.4MB in the beginning and 123.7MB in the end (delta: -22.4MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. * TraceAbstraction took 31007.61ms. Allocated memory was 213.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 122.7MB in the beginning and 1.0GB in the end (delta: -881.4MB). Peak memory consumption was 893.9MB. Max. memory is 16.1GB. * Witness Printer took 136.40ms. Allocated memory is still 1.5GB. Free memory was 1.0GB in the beginning and 987.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 202]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 283 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.1s, OverallIterations: 19, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2535 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2535 mSDsluCounter, 4346 SdHoareTripleChecker+Invalid, 10.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 438 mSDsCounter, 1825 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11319 IncrementalHoareTripleChecker+Invalid, 13144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1825 mSolverCounterUnsat, 3908 mSDtfsCounter, 11319 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1117 GetRequests, 1090 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16445occurred in iteration=16, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 19 MinimizatonAttempts, 13700 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 7858 NumberOfCodeBlocks, 7858 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8369 ConstructedInterpolants, 0 QuantifiedInterpolants, 18593 SizeOfPredicates, 0 NumberOfNonLiveVariables, 697 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 21 InterpolantComputations, 19 PerfectInterpolantSequences, 11473/12285 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: (((((((((((((((((a23 <= 138) && (a4 == 1)) || (((((long long) a23 + 43) <= 0) && (a25 <= 10)) && (246 <= a29))) || (((0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807)) && (a25 == 10)) && (a29 <= 130))) || (((((a29 <= 140) && (a25 <= 10)) && (0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807))) && (a23 <= 138)) && (0 <= ((long long) a23 + 42)))) || ((a4 == 1) && (a25 == 10))) || ((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a29 <= 274)) && (246 <= a29))) || ((((a25 == 13) && (0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807))) && (a23 <= 138)) && (0 <= ((long long) a23 + 42)))) || ((((((long long) a23 + 43) <= 0) && (a25 <= 10)) && (0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807))) && (a29 <= 130))) || ((((a29 <= 140) && (a25 == 11)) && (0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807))) && (a23 <= 138))) || ((a25 == 13) && (a4 == 1))) || ((570382 <= a29) && (a4 == 1))) || (((a25 <= 10) && (0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807))) && (a4 == 1))) || (((a25 == 11) && (a23 <= 138)) && (246 <= a29))) || ((a25 == 12) && (0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807)))) || (((a25 == 11) && (a4 == 1)) && (246 <= a29))) || (((((a25 == 11) && (0 <= (((((long long) a29 * 9) >= 0) ? (((long long) a29 * 9) / 50) : ((((long long) a29 * 9) / 50) - 1)) + 109807))) && (217784 <= a23)) && (a29 <= 220)) && (a4 == 1))) RESULT: Ultimate proved your program to be correct! [2024-11-21 22:05:29,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE