./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem11_label22.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 782212e92ca4a15b07e81f4c0ca47da63585acb1e5a128bc81275e5c438e9fe1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:22:05,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:22:05,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:22:05,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:22:05,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:22:05,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:22:05,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:22:05,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:22:05,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:22:05,261 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:22:05,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:22:05,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:22:05,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:22:05,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:22:05,264 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:22:05,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:22:05,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:22:05,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:22:05,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:22:05,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:22:05,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:22:05,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:22:05,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:22:05,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:22:05,271 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:22:05,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:22:05,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:22:05,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:22:05,272 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:22:05,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:22:05,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:22:05,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:22:05,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:22:05,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:22:05,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:22:05,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:22:05,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:22:05,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:22:05,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:22:05,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:22:05,274 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:22:05,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:22:05,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782212e92ca4a15b07e81f4c0ca47da63585acb1e5a128bc81275e5c438e9fe1 [2024-11-09 19:22:05,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:22:05,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:22:05,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:22:05,563 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:22:05,564 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:22:05,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label22.c [2024-11-09 19:22:07,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:22:07,359 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:22:07,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.c [2024-11-09 19:22:07,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa606fe9/a06c84602bcc44efb2d6ec23b5ec1824/FLAG8be3d3496 [2024-11-09 19:22:07,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa606fe9/a06c84602bcc44efb2d6ec23b5ec1824 [2024-11-09 19:22:07,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:22:07,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:22:07,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:22:07,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:22:07,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:22:07,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:22:07" (1/1) ... [2024-11-09 19:22:07,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14882a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:07, skipping insertion in model container [2024-11-09 19:22:07,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:22:07" (1/1) ... [2024-11-09 19:22:07,464 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:22:07,740 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_label22.c[8004,8017] [2024-11-09 19:22:07,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:22:07,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:22:08,001 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_label22.c[8004,8017] [2024-11-09 19:22:08,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:22:08,157 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:22:08,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08 WrapperNode [2024-11-09 19:22:08,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:22:08,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:22:08,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:22:08,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:22:08,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,287 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-11-09 19:22:08,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:22:08,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:22:08,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:22:08,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:22:08,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,351 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]. [2024-11-09 19:22:08,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,395 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:22:08,448 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:22:08,448 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:22:08,448 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:22:08,449 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (1/1) ... [2024-11-09 19:22:08,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:22:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:22:08,487 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) [2024-11-09 19:22:08,490 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 [2024-11-09 19:22:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:22:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:22:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:22:08,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:22:08,621 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:22:08,623 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:22:10,404 INFO L? ?]: Removed 248 outVars from TransFormulas that were not future-live. [2024-11-09 19:22:10,405 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:22:10,431 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:22:10,432 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:22:10,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:22:10 BoogieIcfgContainer [2024-11-09 19:22:10,433 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:22:10,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:22:10,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:22:10,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:22:10,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:22:07" (1/3) ... [2024-11-09 19:22:10,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9dd0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:22:10, skipping insertion in model container [2024-11-09 19:22:10,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:08" (2/3) ... [2024-11-09 19:22:10,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9dd0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:22:10, skipping insertion in model container [2024-11-09 19:22:10,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:22:10" (3/3) ... [2024-11-09 19:22:10,442 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22.c [2024-11-09 19:22:10,458 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:22:10,458 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:22:10,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:22:10,537 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;@4b07c807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:22:10,538 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:22:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 19:22:10,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:10,556 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:10,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:10,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash 821093286, now seen corresponding path program 1 times [2024-11-09 19:22:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:10,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776332464] [2024-11-09 19:22:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:11,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:11,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776332464] [2024-11-09 19:22:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776332464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:11,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:11,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671959153] [2024-11-09 19:22:11,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:11,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:11,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:11,059 INFO L87 Difference]: Start difference. First operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 0 states have call successors, (0), 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 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:12,397 INFO L93 Difference]: Finished difference Result 767 states and 1708 transitions. [2024-11-09 19:22:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 19:22:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:12,413 INFO L225 Difference]: With dead ends: 767 [2024-11-09 19:22:12,413 INFO L226 Difference]: Without dead ends: 416 [2024-11-09 19:22:12,417 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 [2024-11-09 19:22:12,420 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 292 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:12,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 227 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:22:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-09 19:22:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-11-09 19:22:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.0240963855421685) internal successors, (840), 415 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 840 transitions. [2024-11-09 19:22:12,489 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 840 transitions. Word has length 57 [2024-11-09 19:22:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:12,491 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 840 transitions. [2024-11-09 19:22:12,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 840 transitions. [2024-11-09 19:22:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 19:22:12,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:12,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:12,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:22:12,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:12,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1038007773, now seen corresponding path program 1 times [2024-11-09 19:22:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:12,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867513492] [2024-11-09 19:22:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:12,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:12,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:12,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867513492] [2024-11-09 19:22:12,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867513492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:12,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:12,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:12,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357795369] [2024-11-09 19:22:12,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:12,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:12,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:12,741 INFO L87 Difference]: Start difference. First operand 416 states and 840 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:13,715 INFO L93 Difference]: Finished difference Result 1219 states and 2485 transitions. [2024-11-09 19:22:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:13,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-09 19:22:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:13,720 INFO L225 Difference]: With dead ends: 1219 [2024-11-09 19:22:13,720 INFO L226 Difference]: Without dead ends: 805 [2024-11-09 19:22:13,721 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 [2024-11-09 19:22:13,722 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 261 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:13,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 125 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-09 19:22:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 794. [2024-11-09 19:22:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.9722572509457756) internal successors, (1564), 793 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1564 transitions. [2024-11-09 19:22:13,765 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1564 transitions. Word has length 126 [2024-11-09 19:22:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:13,765 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1564 transitions. [2024-11-09 19:22:13,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1564 transitions. [2024-11-09 19:22:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 19:22:13,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:13,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:13,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:22:13,772 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:13,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash 207291107, now seen corresponding path program 1 times [2024-11-09 19:22:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:13,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251992346] [2024-11-09 19:22:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:13,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:14,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251992346] [2024-11-09 19:22:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251992346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:14,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:14,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060019218] [2024-11-09 19:22:14,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:14,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:14,092 INFO L87 Difference]: Start difference. First operand 794 states and 1564 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:14,995 INFO L93 Difference]: Finished difference Result 2331 states and 4625 transitions. [2024-11-09 19:22:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2024-11-09 19:22:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:15,002 INFO L225 Difference]: With dead ends: 2331 [2024-11-09 19:22:15,003 INFO L226 Difference]: Without dead ends: 1539 [2024-11-09 19:22:15,004 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 [2024-11-09 19:22:15,006 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 241 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:15,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 199 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2024-11-09 19:22:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1535. [2024-11-09 19:22:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 1.8370273794002607) internal successors, (2818), 1534 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2818 transitions. [2024-11-09 19:22:15,052 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2818 transitions. Word has length 128 [2024-11-09 19:22:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:15,054 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 2818 transitions. [2024-11-09 19:22:15,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2818 transitions. [2024-11-09 19:22:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-09 19:22:15,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:15,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:15,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:22:15,063 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:15,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1407211974, now seen corresponding path program 1 times [2024-11-09 19:22:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:15,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115424910] [2024-11-09 19:22:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115424910] [2024-11-09 19:22:15,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115424910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:15,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:15,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935452670] [2024-11-09 19:22:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:15,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:22:15,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:15,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:22:15,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:22:15,375 INFO L87 Difference]: Start difference. First operand 1535 states and 2818 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:16,985 INFO L93 Difference]: Finished difference Result 4208 states and 7983 transitions. [2024-11-09 19:22:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:22:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2024-11-09 19:22:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:16,999 INFO L225 Difference]: With dead ends: 4208 [2024-11-09 19:22:16,999 INFO L226 Difference]: Without dead ends: 2860 [2024-11-09 19:22:17,002 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 [2024-11-09 19:22:17,003 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 578 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:17,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 93 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:22:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2024-11-09 19:22:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2859. [2024-11-09 19:22:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.8792862141357594) internal successors, (5371), 2858 states have internal predecessors, (5371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 5371 transitions. [2024-11-09 19:22:17,059 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 5371 transitions. Word has length 185 [2024-11-09 19:22:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:17,061 INFO L471 AbstractCegarLoop]: Abstraction has 2859 states and 5371 transitions. [2024-11-09 19:22:17,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 5371 transitions. [2024-11-09 19:22:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-09 19:22:17,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:17,066 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, 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] [2024-11-09 19:22:17,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:22:17,067 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:17,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1558942078, now seen corresponding path program 1 times [2024-11-09 19:22:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:17,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010590081] [2024-11-09 19:22:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:22:17,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:17,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010590081] [2024-11-09 19:22:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010590081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:17,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:17,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754479656] [2024-11-09 19:22:17,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:17,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:17,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:17,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:17,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:17,365 INFO L87 Difference]: Start difference. First operand 2859 states and 5371 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:18,311 INFO L93 Difference]: Finished difference Result 6467 states and 12367 transitions. [2024-11-09 19:22:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:18,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2024-11-09 19:22:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:18,328 INFO L225 Difference]: With dead ends: 6467 [2024-11-09 19:22:18,328 INFO L226 Difference]: Without dead ends: 3980 [2024-11-09 19:22:18,332 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 [2024-11-09 19:22:18,333 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 261 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:18,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 517 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2024-11-09 19:22:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3970. [2024-11-09 19:22:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3969 states have (on average 1.8599143361048123) internal successors, (7382), 3969 states have internal predecessors, (7382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 7382 transitions. [2024-11-09 19:22:18,406 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 7382 transitions. Word has length 241 [2024-11-09 19:22:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:18,406 INFO L471 AbstractCegarLoop]: Abstraction has 3970 states and 7382 transitions. [2024-11-09 19:22:18,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 7382 transitions. [2024-11-09 19:22:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-09 19:22:18,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:18,411 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, 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] [2024-11-09 19:22:18,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:22:18,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:18,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash 420286544, now seen corresponding path program 1 times [2024-11-09 19:22:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:18,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764161205] [2024-11-09 19:22:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:18,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 19:22:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764161205] [2024-11-09 19:22:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764161205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:22:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79089624] [2024-11-09 19:22:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:22:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:22:19,006 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) [2024-11-09 19:22:19,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:22:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:19,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:22:19,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:22:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 19:22:19,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:22:19,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79089624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:19,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:22:19,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:22:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281493779] [2024-11-09 19:22:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:19,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:19,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:22:19,313 INFO L87 Difference]: Start difference. First operand 3970 states and 7382 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:20,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:20,165 INFO L93 Difference]: Finished difference Result 9421 states and 17879 transitions. [2024-11-09 19:22:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:20,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 247 [2024-11-09 19:22:20,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:20,189 INFO L225 Difference]: With dead ends: 9421 [2024-11-09 19:22:20,190 INFO L226 Difference]: Without dead ends: 5823 [2024-11-09 19:22:20,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:22:20,196 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 294 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:20,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 394 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states. [2024-11-09 19:22:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 5821. [2024-11-09 19:22:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5821 states, 5820 states have (on average 1.8721649484536083) internal successors, (10896), 5820 states have internal predecessors, (10896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5821 states to 5821 states and 10896 transitions. [2024-11-09 19:22:20,311 INFO L78 Accepts]: Start accepts. Automaton has 5821 states and 10896 transitions. Word has length 247 [2024-11-09 19:22:20,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:20,312 INFO L471 AbstractCegarLoop]: Abstraction has 5821 states and 10896 transitions. [2024-11-09 19:22:20,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5821 states and 10896 transitions. [2024-11-09 19:22:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-09 19:22:20,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:20,317 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, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:20,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:22:20,521 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,SelfDestructingSolverStorable5 [2024-11-09 19:22:20,522 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:20,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1079003358, now seen corresponding path program 1 times [2024-11-09 19:22:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:20,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881971155] [2024-11-09 19:22:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:22:20,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:20,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881971155] [2024-11-09 19:22:20,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881971155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:20,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:20,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:20,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711783253] [2024-11-09 19:22:20,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:20,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:20,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:20,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:20,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:20,893 INFO L87 Difference]: Start difference. First operand 5821 states and 10896 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:21,839 INFO L93 Difference]: Finished difference Result 12964 states and 24697 transitions. [2024-11-09 19:22:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:21,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-09 19:22:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:21,868 INFO L225 Difference]: With dead ends: 12964 [2024-11-09 19:22:21,869 INFO L226 Difference]: Without dead ends: 8446 [2024-11-09 19:22:21,875 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 [2024-11-09 19:22:21,876 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 300 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:21,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 456 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8446 states. [2024-11-09 19:22:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8446 to 8441. [2024-11-09 19:22:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 8440 states have (on average 1.8777251184834123) internal successors, (15848), 8440 states have internal predecessors, (15848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 15848 transitions. [2024-11-09 19:22:22,110 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 15848 transitions. Word has length 253 [2024-11-09 19:22:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:22,111 INFO L471 AbstractCegarLoop]: Abstraction has 8441 states and 15848 transitions. [2024-11-09 19:22:22,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 15848 transitions. [2024-11-09 19:22:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-09 19:22:22,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:22,119 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:22,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:22:22,120 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:22,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:22,121 INFO L85 PathProgramCache]: Analyzing trace with hash 700045281, now seen corresponding path program 1 times [2024-11-09 19:22:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:22,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20726209] [2024-11-09 19:22:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:22,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-09 19:22:22,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:22,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20726209] [2024-11-09 19:22:22,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20726209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:22,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:22,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585887185] [2024-11-09 19:22:22,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:22,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:22,433 INFO L87 Difference]: Start difference. First operand 8441 states and 15848 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:23,491 INFO L93 Difference]: Finished difference Result 19113 states and 36096 transitions. [2024-11-09 19:22:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2024-11-09 19:22:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:23,516 INFO L225 Difference]: With dead ends: 19113 [2024-11-09 19:22:23,516 INFO L226 Difference]: Without dead ends: 10859 [2024-11-09 19:22:23,525 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 [2024-11-09 19:22:23,526 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 260 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:23,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 507 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:22:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2024-11-09 19:22:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 10845. [2024-11-09 19:22:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10845 states, 10844 states have (on average 1.8476576908889708) internal successors, (20036), 10844 states have internal predecessors, (20036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10845 states to 10845 states and 20036 transitions. [2024-11-09 19:22:23,695 INFO L78 Accepts]: Start accepts. Automaton has 10845 states and 20036 transitions. Word has length 295 [2024-11-09 19:22:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:23,695 INFO L471 AbstractCegarLoop]: Abstraction has 10845 states and 20036 transitions. [2024-11-09 19:22:23,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 10845 states and 20036 transitions. [2024-11-09 19:22:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-09 19:22:23,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:23,707 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:23,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:22:23,707 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:23,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -861841172, now seen corresponding path program 1 times [2024-11-09 19:22:23,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:23,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029471498] [2024-11-09 19:22:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:23,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 176 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:24,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:24,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029471498] [2024-11-09 19:22:24,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029471498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:22:24,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751099321] [2024-11-09 19:22:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:24,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:22:24,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:22:24,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:22:24,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:22:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:24,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 19:22:24,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:22:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 176 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:26,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:22:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 176 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:28,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751099321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:22:28,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:22:28,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 19:22:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814017953] [2024-11-09 19:22:28,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:22:28,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 19:22:28,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 19:22:28,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:22:28,120 INFO L87 Difference]: Start difference. First operand 10845 states and 20036 transitions. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:31,465 INFO L93 Difference]: Finished difference Result 25073 states and 46497 transitions. [2024-11-09 19:22:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 19:22:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 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 333 [2024-11-09 19:22:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:31,500 INFO L225 Difference]: With dead ends: 25073 [2024-11-09 19:22:31,500 INFO L226 Difference]: Without dead ends: 14971 [2024-11-09 19:22:31,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-09 19:22:31,514 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 1963 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 4092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:31,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 178 Invalid, 4092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:22:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14971 states. [2024-11-09 19:22:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14971 to 11558. [2024-11-09 19:22:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11558 states, 11557 states have (on average 1.8188976377952757) internal successors, (21021), 11557 states have internal predecessors, (21021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11558 states to 11558 states and 21021 transitions. [2024-11-09 19:22:31,704 INFO L78 Accepts]: Start accepts. Automaton has 11558 states and 21021 transitions. Word has length 333 [2024-11-09 19:22:31,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:31,704 INFO L471 AbstractCegarLoop]: Abstraction has 11558 states and 21021 transitions. [2024-11-09 19:22:31,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 11558 states and 21021 transitions. [2024-11-09 19:22:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-09 19:22:31,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:31,718 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:31,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:22:31,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 19:22:31,923 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:31,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash 15301380, now seen corresponding path program 1 times [2024-11-09 19:22:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104091566] [2024-11-09 19:22:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 19:22:32,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:32,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104091566] [2024-11-09 19:22:32,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104091566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:32,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:32,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:32,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616071316] [2024-11-09 19:22:32,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:32,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:32,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:32,331 INFO L87 Difference]: Start difference. First operand 11558 states and 21021 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:33,256 INFO L93 Difference]: Finished difference Result 28130 states and 51354 transitions. [2024-11-09 19:22:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:33,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 354 [2024-11-09 19:22:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:33,296 INFO L225 Difference]: With dead ends: 28130 [2024-11-09 19:22:33,296 INFO L226 Difference]: Without dead ends: 17314 [2024-11-09 19:22:33,310 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 [2024-11-09 19:22:33,311 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 259 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:33,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 144 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17314 states. [2024-11-09 19:22:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17314 to 17310. [2024-11-09 19:22:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17310 states, 17309 states have (on average 1.8016061008723785) internal successors, (31184), 17309 states have internal predecessors, (31184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17310 states to 17310 states and 31184 transitions. [2024-11-09 19:22:33,638 INFO L78 Accepts]: Start accepts. Automaton has 17310 states and 31184 transitions. Word has length 354 [2024-11-09 19:22:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:33,639 INFO L471 AbstractCegarLoop]: Abstraction has 17310 states and 31184 transitions. [2024-11-09 19:22:33,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 17310 states and 31184 transitions. [2024-11-09 19:22:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-09 19:22:33,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:33,653 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:33,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:22:33,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:33,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1337258202, now seen corresponding path program 1 times [2024-11-09 19:22:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763371269] [2024-11-09 19:22:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:33,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:33,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763371269] [2024-11-09 19:22:33,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763371269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:33,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:33,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:33,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236892872] [2024-11-09 19:22:33,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:33,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:33,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:33,980 INFO L87 Difference]: Start difference. First operand 17310 states and 31184 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:34,861 INFO L93 Difference]: Finished difference Result 36846 states and 66431 transitions. [2024-11-09 19:22:34,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:34,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 361 [2024-11-09 19:22:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:34,895 INFO L225 Difference]: With dead ends: 36846 [2024-11-09 19:22:34,895 INFO L226 Difference]: Without dead ends: 20648 [2024-11-09 19:22:34,913 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 [2024-11-09 19:22:34,914 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 177 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:34,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 79 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20648 states. [2024-11-09 19:22:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20648 to 20640. [2024-11-09 19:22:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20640 states, 20639 states have (on average 1.7917534764281215) internal successors, (36980), 20639 states have internal predecessors, (36980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20640 states to 20640 states and 36980 transitions. [2024-11-09 19:22:35,184 INFO L78 Accepts]: Start accepts. Automaton has 20640 states and 36980 transitions. Word has length 361 [2024-11-09 19:22:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:35,184 INFO L471 AbstractCegarLoop]: Abstraction has 20640 states and 36980 transitions. [2024-11-09 19:22:35,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 20640 states and 36980 transitions. [2024-11-09 19:22:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-09 19:22:35,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:35,255 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:35,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:22:35,256 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:35,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:35,257 INFO L85 PathProgramCache]: Analyzing trace with hash 541331720, now seen corresponding path program 1 times [2024-11-09 19:22:35,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:35,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210920429] [2024-11-09 19:22:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-09 19:22:36,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210920429] [2024-11-09 19:22:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210920429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:22:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468142281] [2024-11-09 19:22:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:36,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:22:36,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:22:36,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:22:36,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:22:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:36,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:22:36,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:22:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-09 19:22:37,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:22:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-09 19:22:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468142281] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:22:40,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:22:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:22:40,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717563521] [2024-11-09 19:22:40,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:40,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:22:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:22:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:22:40,700 INFO L87 Difference]: Start difference. First operand 20640 states and 36980 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:42,295 INFO L93 Difference]: Finished difference Result 47801 states and 86153 transitions. [2024-11-09 19:22:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:22:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2024-11-09 19:22:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:42,328 INFO L225 Difference]: With dead ends: 47801 [2024-11-09 19:22:42,328 INFO L226 Difference]: Without dead ends: 29200 [2024-11-09 19:22:42,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 724 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:22:42,344 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 671 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:42,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 185 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:22:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29200 states. [2024-11-09 19:22:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29200 to 21195. [2024-11-09 19:22:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21195 states, 21194 states have (on average 1.7883835047654997) internal successors, (37903), 21194 states have internal predecessors, (37903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21195 states to 21195 states and 37903 transitions. [2024-11-09 19:22:42,738 INFO L78 Accepts]: Start accepts. Automaton has 21195 states and 37903 transitions. Word has length 364 [2024-11-09 19:22:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:42,739 INFO L471 AbstractCegarLoop]: Abstraction has 21195 states and 37903 transitions. [2024-11-09 19:22:42,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 21195 states and 37903 transitions. [2024-11-09 19:22:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-09 19:22:42,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:42,751 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:42,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:22:42,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:22:42,952 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:42,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1537235490, now seen corresponding path program 1 times [2024-11-09 19:22:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:42,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302632539] [2024-11-09 19:22:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:42,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:22:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302632539] [2024-11-09 19:22:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302632539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:43,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109240994] [2024-11-09 19:22:43,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:43,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:22:43,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:22:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:22:43,382 INFO L87 Difference]: Start difference. First operand 21195 states and 37903 transitions. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:44,757 INFO L93 Difference]: Finished difference Result 46309 states and 83351 transitions. [2024-11-09 19:22:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:22:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2024-11-09 19:22:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:44,787 INFO L225 Difference]: With dead ends: 46309 [2024-11-09 19:22:44,787 INFO L226 Difference]: Without dead ends: 27153 [2024-11-09 19:22:44,801 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 [2024-11-09 19:22:44,801 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 473 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:44,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 117 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:22:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27153 states. [2024-11-09 19:22:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27153 to 23247. [2024-11-09 19:22:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23247 states, 23246 states have (on average 1.7882646476813215) internal successors, (41570), 23246 states have internal predecessors, (41570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23247 states to 23247 states and 41570 transitions. [2024-11-09 19:22:45,119 INFO L78 Accepts]: Start accepts. Automaton has 23247 states and 41570 transitions. Word has length 364 [2024-11-09 19:22:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:45,119 INFO L471 AbstractCegarLoop]: Abstraction has 23247 states and 41570 transitions. [2024-11-09 19:22:45,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23247 states and 41570 transitions. [2024-11-09 19:22:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-09 19:22:45,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:45,137 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, 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, 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] [2024-11-09 19:22:45,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:22:45,137 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:45,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1420116828, now seen corresponding path program 1 times [2024-11-09 19:22:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097795509] [2024-11-09 19:22:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 19:22:45,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:45,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097795509] [2024-11-09 19:22:45,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097795509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:45,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:45,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:45,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338262029] [2024-11-09 19:22:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:45,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:45,637 INFO L87 Difference]: Start difference. First operand 23247 states and 41570 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:46,531 INFO L93 Difference]: Finished difference Result 45943 states and 82176 transitions. [2024-11-09 19:22:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:46,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 436 [2024-11-09 19:22:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:46,559 INFO L225 Difference]: With dead ends: 45943 [2024-11-09 19:22:46,559 INFO L226 Difference]: Without dead ends: 24735 [2024-11-09 19:22:46,578 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 [2024-11-09 19:22:46,578 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 261 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:46,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 147 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24735 states. [2024-11-09 19:22:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24735 to 23249. [2024-11-09 19:22:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23249 states, 23248 states have (on average 1.7879387474191328) internal successors, (41566), 23248 states have internal predecessors, (41566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23249 states to 23249 states and 41566 transitions. [2024-11-09 19:22:47,008 INFO L78 Accepts]: Start accepts. Automaton has 23249 states and 41566 transitions. Word has length 436 [2024-11-09 19:22:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:47,008 INFO L471 AbstractCegarLoop]: Abstraction has 23249 states and 41566 transitions. [2024-11-09 19:22:47,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 23249 states and 41566 transitions. [2024-11-09 19:22:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-09 19:22:47,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:47,026 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:47,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:22:47,026 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:47,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash -732987334, now seen corresponding path program 1 times [2024-11-09 19:22:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:47,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292324838] [2024-11-09 19:22:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-09 19:22:47,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292324838] [2024-11-09 19:22:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292324838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:47,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922121342] [2024-11-09 19:22:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:47,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:47,397 INFO L87 Difference]: Start difference. First operand 23249 states and 41566 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:48,287 INFO L93 Difference]: Finished difference Result 43176 states and 77295 transitions. [2024-11-09 19:22:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:48,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 439 [2024-11-09 19:22:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:48,312 INFO L225 Difference]: With dead ends: 43176 [2024-11-09 19:22:48,313 INFO L226 Difference]: Without dead ends: 21966 [2024-11-09 19:22:48,329 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 [2024-11-09 19:22:48,330 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 257 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:48,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 458 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21966 states. [2024-11-09 19:22:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21966 to 21948. [2024-11-09 19:22:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21948 states, 21947 states have (on average 1.7627010525356541) internal successors, (38686), 21947 states have internal predecessors, (38686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21948 states to 21948 states and 38686 transitions. [2024-11-09 19:22:48,541 INFO L78 Accepts]: Start accepts. Automaton has 21948 states and 38686 transitions. Word has length 439 [2024-11-09 19:22:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:48,542 INFO L471 AbstractCegarLoop]: Abstraction has 21948 states and 38686 transitions. [2024-11-09 19:22:48,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 21948 states and 38686 transitions. [2024-11-09 19:22:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-09 19:22:48,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:48,555 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:48,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:22:48,556 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:48,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1510198423, now seen corresponding path program 1 times [2024-11-09 19:22:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:48,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147446860] [2024-11-09 19:22:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-09 19:22:48,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:48,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147446860] [2024-11-09 19:22:48,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147446860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:48,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:48,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:48,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687789778] [2024-11-09 19:22:48,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:48,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:48,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:48,846 INFO L87 Difference]: Start difference. First operand 21948 states and 38686 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:49,310 INFO L93 Difference]: Finished difference Result 41102 states and 72493 transitions. [2024-11-09 19:22:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:49,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2024-11-09 19:22:49,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:49,339 INFO L225 Difference]: With dead ends: 41102 [2024-11-09 19:22:49,339 INFO L226 Difference]: Without dead ends: 21193 [2024-11-09 19:22:49,352 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 [2024-11-09 19:22:49,353 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 309 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:49,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 42 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 19:22:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21193 states. [2024-11-09 19:22:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21193 to 21184. [2024-11-09 19:22:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21184 states, 21183 states have (on average 1.7614596610489544) internal successors, (37313), 21183 states have internal predecessors, (37313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21184 states to 21184 states and 37313 transitions. [2024-11-09 19:22:49,554 INFO L78 Accepts]: Start accepts. Automaton has 21184 states and 37313 transitions. Word has length 442 [2024-11-09 19:22:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:49,554 INFO L471 AbstractCegarLoop]: Abstraction has 21184 states and 37313 transitions. [2024-11-09 19:22:49,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 21184 states and 37313 transitions. [2024-11-09 19:22:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-09 19:22:49,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:49,568 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:49,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:22:49,568 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:49,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1513444231, now seen corresponding path program 1 times [2024-11-09 19:22:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:49,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377618396] [2024-11-09 19:22:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:49,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-09 19:22:49,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:49,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377618396] [2024-11-09 19:22:49,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377618396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:49,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74012051] [2024-11-09 19:22:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:49,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:49,774 INFO L87 Difference]: Start difference. First operand 21184 states and 37313 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:50,537 INFO L93 Difference]: Finished difference Result 36786 states and 64606 transitions. [2024-11-09 19:22:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 458 [2024-11-09 19:22:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:50,552 INFO L225 Difference]: With dead ends: 36786 [2024-11-09 19:22:50,552 INFO L226 Difference]: Without dead ends: 17454 [2024-11-09 19:22:50,560 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 [2024-11-09 19:22:50,560 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 255 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:50,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 138 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:22:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17454 states. [2024-11-09 19:22:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17454 to 17269. [2024-11-09 19:22:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17269 states, 17268 states have (on average 1.744672226082928) internal successors, (30127), 17268 states have internal predecessors, (30127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17269 states to 17269 states and 30127 transitions. [2024-11-09 19:22:50,707 INFO L78 Accepts]: Start accepts. Automaton has 17269 states and 30127 transitions. Word has length 458 [2024-11-09 19:22:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:50,707 INFO L471 AbstractCegarLoop]: Abstraction has 17269 states and 30127 transitions. [2024-11-09 19:22:50,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 17269 states and 30127 transitions. [2024-11-09 19:22:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-11-09 19:22:50,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:50,717 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:50,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:22:50,717 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:50,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash -534775937, now seen corresponding path program 1 times [2024-11-09 19:22:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:50,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694540121] [2024-11-09 19:22:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-09 19:22:51,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:51,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694540121] [2024-11-09 19:22:51,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694540121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:51,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:51,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:22:51,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718741526] [2024-11-09 19:22:51,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:51,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:22:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:22:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:22:51,315 INFO L87 Difference]: Start difference. First operand 17269 states and 30127 transitions. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:52,518 INFO L93 Difference]: Finished difference Result 32765 states and 57148 transitions. [2024-11-09 19:22:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 19:22:52,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 496 [2024-11-09 19:22:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:52,540 INFO L225 Difference]: With dead ends: 32765 [2024-11-09 19:22:52,541 INFO L226 Difference]: Without dead ends: 17535 [2024-11-09 19:22:52,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:22:52,551 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 505 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:52,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 62 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:22:52,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17535 states. [2024-11-09 19:22:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17535 to 17455. [2024-11-09 19:22:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17455 states, 17454 states have (on average 1.7432107253351667) internal successors, (30426), 17454 states have internal predecessors, (30426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17455 states to 17455 states and 30426 transitions. [2024-11-09 19:22:52,700 INFO L78 Accepts]: Start accepts. Automaton has 17455 states and 30426 transitions. Word has length 496 [2024-11-09 19:22:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:52,701 INFO L471 AbstractCegarLoop]: Abstraction has 17455 states and 30426 transitions. [2024-11-09 19:22:52,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 17455 states and 30426 transitions. [2024-11-09 19:22:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2024-11-09 19:22:52,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:52,716 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:52,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:22:52,717 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:52,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1482968125, now seen corresponding path program 1 times [2024-11-09 19:22:52,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:52,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986426474] [2024-11-09 19:22:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-09 19:22:53,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:53,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986426474] [2024-11-09 19:22:53,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986426474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:53,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:53,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504851559] [2024-11-09 19:22:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:53,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:53,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:53,012 INFO L87 Difference]: Start difference. First operand 17455 states and 30426 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:53,729 INFO L93 Difference]: Finished difference Result 35463 states and 61840 transitions. [2024-11-09 19:22:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 519 [2024-11-09 19:22:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:53,751 INFO L225 Difference]: With dead ends: 35463 [2024-11-09 19:22:53,751 INFO L226 Difference]: Without dead ends: 19120 [2024-11-09 19:22:53,762 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 [2024-11-09 19:22:53,763 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 182 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:53,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 492 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:22:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19120 states. [2024-11-09 19:22:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19120 to 18195. [2024-11-09 19:22:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18195 states, 18194 states have (on average 1.7411234472903154) internal successors, (31678), 18194 states have internal predecessors, (31678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18195 states to 18195 states and 31678 transitions. [2024-11-09 19:22:54,087 INFO L78 Accepts]: Start accepts. Automaton has 18195 states and 31678 transitions. Word has length 519 [2024-11-09 19:22:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:54,088 INFO L471 AbstractCegarLoop]: Abstraction has 18195 states and 31678 transitions. [2024-11-09 19:22:54,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 18195 states and 31678 transitions. [2024-11-09 19:22:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2024-11-09 19:22:54,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:54,114 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:54,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 19:22:54,115 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:54,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash -764809948, now seen corresponding path program 1 times [2024-11-09 19:22:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:54,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095378348] [2024-11-09 19:22:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:54,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-09 19:22:54,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:54,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095378348] [2024-11-09 19:22:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095378348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:54,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:54,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860967851] [2024-11-09 19:22:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:54,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:54,756 INFO L87 Difference]: Start difference. First operand 18195 states and 31678 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:55,652 INFO L93 Difference]: Finished difference Result 38057 states and 66280 transitions. [2024-11-09 19:22:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:55,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 550 [2024-11-09 19:22:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:55,672 INFO L225 Difference]: With dead ends: 38057 [2024-11-09 19:22:55,672 INFO L226 Difference]: Without dead ends: 20974 [2024-11-09 19:22:55,682 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 [2024-11-09 19:22:55,683 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 175 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:55,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 67 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20974 states. [2024-11-09 19:22:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20974 to 18380. [2024-11-09 19:22:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18380 states, 18379 states have (on average 1.7404646607541217) internal successors, (31988), 18379 states have internal predecessors, (31988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18380 states to 18380 states and 31988 transitions. [2024-11-09 19:22:55,856 INFO L78 Accepts]: Start accepts. Automaton has 18380 states and 31988 transitions. Word has length 550 [2024-11-09 19:22:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:55,856 INFO L471 AbstractCegarLoop]: Abstraction has 18380 states and 31988 transitions. [2024-11-09 19:22:55,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18380 states and 31988 transitions. [2024-11-09 19:22:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-09 19:22:55,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:55,868 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:55,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 19:22:55,868 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:55,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1284125446, now seen corresponding path program 1 times [2024-11-09 19:22:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:55,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601393463] [2024-11-09 19:22:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-09 19:22:57,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:57,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601393463] [2024-11-09 19:22:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601393463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:22:57,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310593615] [2024-11-09 19:22:57,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:57,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:22:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:57,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:22:57,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:22:57,092 INFO L87 Difference]: Start difference. First operand 18380 states and 31988 transitions. Second operand has 7 states, 7 states have (on average 58.285714285714285) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:58,767 INFO L93 Difference]: Finished difference Result 37318 states and 64927 transitions. [2024-11-09 19:22:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 19:22:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 58.285714285714285) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 561 [2024-11-09 19:22:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:58,796 INFO L225 Difference]: With dead ends: 37318 [2024-11-09 19:22:58,797 INFO L226 Difference]: Without dead ends: 21347 [2024-11-09 19:22:58,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:22:58,811 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 512 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:58,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 220 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:22:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21347 states. [2024-11-09 19:22:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21347 to 18935. [2024-11-09 19:22:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18935 states, 18934 states have (on average 1.7411006654695258) internal successors, (32966), 18934 states have internal predecessors, (32966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18935 states to 18935 states and 32966 transitions. [2024-11-09 19:22:59,020 INFO L78 Accepts]: Start accepts. Automaton has 18935 states and 32966 transitions. Word has length 561 [2024-11-09 19:22:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:59,021 INFO L471 AbstractCegarLoop]: Abstraction has 18935 states and 32966 transitions. [2024-11-09 19:22:59,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.285714285714285) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 18935 states and 32966 transitions. [2024-11-09 19:22:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-11-09 19:22:59,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:59,033 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:59,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 19:22:59,033 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:59,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 581125160, now seen corresponding path program 1 times [2024-11-09 19:22:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493882797] [2024-11-09 19:22:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 672 proven. 8 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-09 19:23:00,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:00,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493882797] [2024-11-09 19:23:00,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493882797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:00,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960792002] [2024-11-09 19:23:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:00,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:00,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:00,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:23:00,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:23:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:00,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:23:00,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 558 proven. 122 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-09 19:23:01,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:23:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 558 proven. 122 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-09 19:23:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960792002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:23:04,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:23:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 10 [2024-11-09 19:23:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406543784] [2024-11-09 19:23:04,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:23:04,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 19:23:04,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 19:23:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 19:23:04,052 INFO L87 Difference]: Start difference. First operand 18935 states and 32966 transitions. Second operand has 11 states, 11 states have (on average 90.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:09,342 INFO L93 Difference]: Finished difference Result 41392 states and 71947 transitions. [2024-11-09 19:23:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 19:23:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 90.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 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 571 [2024-11-09 19:23:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:09,372 INFO L225 Difference]: With dead ends: 41392 [2024-11-09 19:23:09,372 INFO L226 Difference]: Without dead ends: 24496 [2024-11-09 19:23:09,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1164 GetRequests, 1139 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2024-11-09 19:23:09,386 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 3742 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 6135 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3742 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 6135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:09,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3742 Valid, 192 Invalid, 6662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 6135 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-09 19:23:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24496 states. [2024-11-09 19:23:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24496 to 15231. [2024-11-09 19:23:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15231 states, 15230 states have (on average 1.715167432698621) internal successors, (26122), 15230 states have internal predecessors, (26122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15231 states to 15231 states and 26122 transitions. [2024-11-09 19:23:09,591 INFO L78 Accepts]: Start accepts. Automaton has 15231 states and 26122 transitions. Word has length 571 [2024-11-09 19:23:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:09,591 INFO L471 AbstractCegarLoop]: Abstraction has 15231 states and 26122 transitions. [2024-11-09 19:23:09,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 15231 states and 26122 transitions. [2024-11-09 19:23:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-09 19:23:09,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:09,603 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:23:09,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:23:09,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:09,803 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:09,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1687332137, now seen corresponding path program 1 times [2024-11-09 19:23:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994971687] [2024-11-09 19:23:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 686 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-09 19:23:10,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:10,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994971687] [2024-11-09 19:23:10,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994971687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:10,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895666068] [2024-11-09 19:23:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:10,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:10,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:10,385 INFO L87 Difference]: Start difference. First operand 15231 states and 26122 transitions. Second operand has 4 states, 4 states have (on average 110.5) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:11,706 INFO L93 Difference]: Finished difference Result 33053 states and 56718 transitions. [2024-11-09 19:23:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 595 [2024-11-09 19:23:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:11,728 INFO L225 Difference]: With dead ends: 33053 [2024-11-09 19:23:11,728 INFO L226 Difference]: Without dead ends: 18194 [2024-11-09 19:23:11,739 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 [2024-11-09 19:23:11,740 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 359 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:11,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 117 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:23:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18194 states. [2024-11-09 19:23:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18194 to 17820. [2024-11-09 19:23:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17820 states, 17819 states have (on average 1.7066053089398956) internal successors, (30410), 17819 states have internal predecessors, (30410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17820 states to 17820 states and 30410 transitions. [2024-11-09 19:23:11,936 INFO L78 Accepts]: Start accepts. Automaton has 17820 states and 30410 transitions. Word has length 595 [2024-11-09 19:23:11,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:11,937 INFO L471 AbstractCegarLoop]: Abstraction has 17820 states and 30410 transitions. [2024-11-09 19:23:11,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 17820 states and 30410 transitions. [2024-11-09 19:23:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-09 19:23:11,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:11,949 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:11,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 19:23:11,949 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:11,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1143459096, now seen corresponding path program 1 times [2024-11-09 19:23:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:11,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750695449] [2024-11-09 19:23:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:11,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-09 19:23:12,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:12,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750695449] [2024-11-09 19:23:12,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750695449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:12,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:12,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:23:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386499506] [2024-11-09 19:23:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:12,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:12,575 INFO L87 Difference]: Start difference. First operand 17820 states and 30410 transitions. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:13,791 INFO L93 Difference]: Finished difference Result 36017 states and 61522 transitions. [2024-11-09 19:23:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:13,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 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 614 [2024-11-09 19:23:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:13,813 INFO L225 Difference]: With dead ends: 36017 [2024-11-09 19:23:13,813 INFO L226 Difference]: Without dead ends: 20608 [2024-11-09 19:23:13,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:23:13,824 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 469 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:13,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 132 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:23:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20608 states. [2024-11-09 19:23:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20608 to 18376. [2024-11-09 19:23:14,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18376 states, 18375 states have (on average 1.7042721088435375) internal successors, (31316), 18375 states have internal predecessors, (31316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18376 states to 18376 states and 31316 transitions. [2024-11-09 19:23:14,028 INFO L78 Accepts]: Start accepts. Automaton has 18376 states and 31316 transitions. Word has length 614 [2024-11-09 19:23:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:14,028 INFO L471 AbstractCegarLoop]: Abstraction has 18376 states and 31316 transitions. [2024-11-09 19:23:14,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 18376 states and 31316 transitions. [2024-11-09 19:23:14,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2024-11-09 19:23:14,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:14,043 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, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:14,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 19:23:14,043 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:14,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:14,043 INFO L85 PathProgramCache]: Analyzing trace with hash 588370247, now seen corresponding path program 1 times [2024-11-09 19:23:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132761318] [2024-11-09 19:23:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:14,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 846 proven. 939 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-09 19:23:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132761318] [2024-11-09 19:23:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132761318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301780500] [2024-11-09 19:23:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:16,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:16,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:16,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:23:16,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:23:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:16,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 19:23:16,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 827 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2024-11-09 19:23:16,810 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:23:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301780500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:16,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:23:16,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-09 19:23:16,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172399688] [2024-11-09 19:23:16,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:16,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:16,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:16,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:23:16,812 INFO L87 Difference]: Start difference. First operand 18376 states and 31316 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)