./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.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 b6a3c97d212c5da9fd8322cf568d9e152410da494dc81afa8e10ab2614b0e804 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:55:44,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:55:44,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:55:44,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:55:44,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:55:44,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:55:44,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:55:44,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:55:44,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:55:44,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:55:44,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:55:44,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:55:44,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:55:44,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:55:44,852 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:55:44,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:55:44,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:55:44,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:55:44,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:55:44,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:55:44,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:55:44,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:55:44,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:55:44,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:55:44,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:55:44,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:55:44,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:55:44,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:55:44,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:55:44,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:55:44,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:55:44,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:55:44,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:55:44,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:55:44,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:55:44,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:55:44,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:55:44,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:55:44,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:55:44,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:55:44,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:55:44,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:55:44,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6a3c97d212c5da9fd8322cf568d9e152410da494dc81afa8e10ab2614b0e804 [2024-10-13 23:55:45,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:55:45,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:55:45,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:55:45,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:55:45,109 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:55:45,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.c [2024-10-13 23:55:46,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:55:46,618 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:55:46,619 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.c [2024-10-13 23:55:46,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d8c10cd/d0a6aa2cd26c401ebb6b2d859539023e/FLAG2dc65e3ae [2024-10-13 23:55:46,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d8c10cd/d0a6aa2cd26c401ebb6b2d859539023e [2024-10-13 23:55:46,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:55:46,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:55:46,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:55:46,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:55:46,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:55:46,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:55:46" (1/1) ... [2024-10-13 23:55:46,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b66c78b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:46, skipping insertion in model container [2024-10-13 23:55:46,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:55:46" (1/1) ... [2024-10-13 23:55:46,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:55:46,915 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.c[3293,3306] [2024-10-13 23:55:47,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:55:47,366 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:55:47,381 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.c[3293,3306] [2024-10-13 23:55:47,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:55:47,565 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:55:47,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47 WrapperNode [2024-10-13 23:55:47,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:55:47,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:55:47,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:55:47,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:55:47,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:47,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:47,790 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-13 23:55:47,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:55:47,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:55:47,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:55:47,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:55:47,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:47,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:47,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,032 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 23:55:48,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:55:48,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:55:48,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:55:48,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:55:48,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (1/1) ... [2024-10-13 23:55:48,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:55:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:55:48,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 23:55:48,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 23:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:55:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:55:48,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:55:48,410 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:55:48,412 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:55:50,987 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-13 23:55:50,987 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:55:51,026 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:55:51,026 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:55:51,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:55:51 BoogieIcfgContainer [2024-10-13 23:55:51,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:55:51,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:55:51,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:55:51,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:55:51,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:55:46" (1/3) ... [2024-10-13 23:55:51,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71aa1426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:55:51, skipping insertion in model container [2024-10-13 23:55:51,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:47" (2/3) ... [2024-10-13 23:55:51,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71aa1426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:55:51, skipping insertion in model container [2024-10-13 23:55:51,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:55:51" (3/3) ... [2024-10-13 23:55:51,033 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label23.c [2024-10-13 23:55:51,044 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:55:51,045 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:55:51,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:55:51,132 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;@682eaf41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:55:51,132 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:55:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 23:55:51,142 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:51,143 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] [2024-10-13 23:55:51,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:51,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -931288269, now seen corresponding path program 1 times [2024-10-13 23:55:51,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:51,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171664079] [2024-10-13 23:55:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:51,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:55:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171664079] [2024-10-13 23:55:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171664079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:51,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:51,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:55:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361444931] [2024-10-13 23:55:51,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:51,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:55:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:51,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:55:51,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:55:51,403 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:51,511 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-13 23:55:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:55:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-13 23:55:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:51,524 INFO L225 Difference]: With dead ends: 1055 [2024-10-13 23:55:51,524 INFO L226 Difference]: Without dead ends: 526 [2024-10-13 23:55:51,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:55:51,532 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:51,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:55:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-13 23:55:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-13 23:55:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-13 23:55:51,603 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 20 [2024-10-13 23:55:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:51,604 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-13 23:55:51,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-13 23:55:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 23:55:51,605 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:51,605 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] [2024-10-13 23:55:51,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:55:51,606 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:51,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1134763615, now seen corresponding path program 1 times [2024-10-13 23:55:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698729943] [2024-10-13 23:55:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:55:51,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:51,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698729943] [2024-10-13 23:55:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698729943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:51,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:51,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:55:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827859156] [2024-10-13 23:55:51,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:51,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:51,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:51,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:51,726 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:53,731 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2024-10-13 23:55:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:53,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-13 23:55:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:53,735 INFO L225 Difference]: With dead ends: 1499 [2024-10-13 23:55:53,735 INFO L226 Difference]: Without dead ends: 974 [2024-10-13 23:55:53,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:53,737 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 453 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:53,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-13 23:55:53,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-10-13 23:55:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2024-10-13 23:55:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2024-10-13 23:55:53,761 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 20 [2024-10-13 23:55:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:53,761 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2024-10-13 23:55:53,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2024-10-13 23:55:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-13 23:55:53,763 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:53,764 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:53,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:55:53,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:53,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2135768756, now seen corresponding path program 1 times [2024-10-13 23:55:53,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:53,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746926894] [2024-10-13 23:55:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:53,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:55:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746926894] [2024-10-13 23:55:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746926894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:53,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:53,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102268842] [2024-10-13 23:55:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:53,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:53,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:53,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:53,943 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:56,001 INFO L93 Difference]: Finished difference Result 2813 states and 4241 transitions. [2024-10-13 23:55:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:56,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-10-13 23:55:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:56,006 INFO L225 Difference]: With dead ends: 2813 [2024-10-13 23:55:56,007 INFO L226 Difference]: Without dead ends: 1843 [2024-10-13 23:55:56,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:56,008 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 470 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:56,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 918 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:55:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-13 23:55:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1841. [2024-10-13 23:55:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3603260869565217) internal successors, (2503), 1840 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2503 transitions. [2024-10-13 23:55:56,032 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2503 transitions. Word has length 90 [2024-10-13 23:55:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:56,033 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2503 transitions. [2024-10-13 23:55:56,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2503 transitions. [2024-10-13 23:55:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-13 23:55:56,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:56,035 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 23:55:56,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:55:56,036 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:56,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1989015921, now seen corresponding path program 1 times [2024-10-13 23:55:56,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:56,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980394333] [2024-10-13 23:55:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:55:56,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:56,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980394333] [2024-10-13 23:55:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980394333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:56,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:56,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:55:56,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695604383] [2024-10-13 23:55:56,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:56,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:56,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:56,222 INFO L87 Difference]: Start difference. First operand 1841 states and 2503 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:57,842 INFO L93 Difference]: Finished difference Result 5394 states and 7325 transitions. [2024-10-13 23:55:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:57,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-13 23:55:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:57,850 INFO L225 Difference]: With dead ends: 5394 [2024-10-13 23:55:57,850 INFO L226 Difference]: Without dead ends: 2700 [2024-10-13 23:55:57,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:57,853 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:57,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 23:55:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2024-10-13 23:55:57,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2700. [2024-10-13 23:55:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2699 states have (on average 1.1919229344201556) internal successors, (3217), 2699 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3217 transitions. [2024-10-13 23:55:57,913 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3217 transitions. Word has length 112 [2024-10-13 23:55:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:57,913 INFO L471 AbstractCegarLoop]: Abstraction has 2700 states and 3217 transitions. [2024-10-13 23:55:57,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3217 transitions. [2024-10-13 23:55:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-13 23:55:57,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:57,921 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:57,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:55:57,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:57,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:57,922 INFO L85 PathProgramCache]: Analyzing trace with hash 493723582, now seen corresponding path program 1 times [2024-10-13 23:55:57,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:57,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767569009] [2024-10-13 23:55:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:55:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767569009] [2024-10-13 23:55:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767569009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:58,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:58,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240369392] [2024-10-13 23:55:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:58,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:58,127 INFO L87 Difference]: Start difference. First operand 2700 states and 3217 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) [2024-10-13 23:55:59,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:59,524 INFO L93 Difference]: Finished difference Result 7107 states and 8597 transitions. [2024-10-13 23:55:59,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:59,525 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 172 [2024-10-13 23:55:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:59,540 INFO L225 Difference]: With dead ends: 7107 [2024-10-13 23:55:59,541 INFO L226 Difference]: Without dead ends: 4408 [2024-10-13 23:55:59,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:59,547 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:59,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:55:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2024-10-13 23:55:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2024-10-13 23:55:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.1706376219650556) internal successors, (5159), 4407 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5159 transitions. [2024-10-13 23:55:59,599 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5159 transitions. Word has length 172 [2024-10-13 23:55:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:59,601 INFO L471 AbstractCegarLoop]: Abstraction has 4408 states and 5159 transitions. [2024-10-13 23:55:59,601 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) [2024-10-13 23:55:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5159 transitions. [2024-10-13 23:55:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-13 23:55:59,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:59,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:59,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:55:59,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:59,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2002623011, now seen corresponding path program 1 times [2024-10-13 23:55:59,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:59,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095826615] [2024-10-13 23:55:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:59,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 23:55:59,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095826615] [2024-10-13 23:55:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095826615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:59,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:59,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:59,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453760373] [2024-10-13 23:55:59,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:59,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:59,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:59,771 INFO L87 Difference]: Start difference. First operand 4408 states and 5159 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:01,326 INFO L93 Difference]: Finished difference Result 10935 states and 12969 transitions. [2024-10-13 23:56:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-10-13 23:56:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:01,342 INFO L225 Difference]: With dead ends: 10935 [2024-10-13 23:56:01,342 INFO L226 Difference]: Without dead ends: 6527 [2024-10-13 23:56:01,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:01,348 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 429 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:01,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 23:56:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2024-10-13 23:56:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 4381. [2024-10-13 23:56:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.1684931506849314) internal successors, (5118), 4380 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5118 transitions. [2024-10-13 23:56:01,406 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5118 transitions. Word has length 174 [2024-10-13 23:56:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:01,407 INFO L471 AbstractCegarLoop]: Abstraction has 4381 states and 5118 transitions. [2024-10-13 23:56:01,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5118 transitions. [2024-10-13 23:56:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-13 23:56:01,409 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:01,409 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:01,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:56:01,409 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:01,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1130893539, now seen corresponding path program 1 times [2024-10-13 23:56:01,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:01,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172221352] [2024-10-13 23:56:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:01,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:56:01,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:01,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172221352] [2024-10-13 23:56:01,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172221352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:01,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:01,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674498587] [2024-10-13 23:56:01,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:01,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:01,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:01,587 INFO L87 Difference]: Start difference. First operand 4381 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:03,163 INFO L93 Difference]: Finished difference Result 10044 states and 11705 transitions. [2024-10-13 23:56:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 240 [2024-10-13 23:56:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:03,176 INFO L225 Difference]: With dead ends: 10044 [2024-10-13 23:56:03,177 INFO L226 Difference]: Without dead ends: 5664 [2024-10-13 23:56:03,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:03,181 INFO L432 NwaCegarLoop]: 831 mSDtfsCounter, 415 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:03,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 891 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 23:56:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2024-10-13 23:56:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5233. [2024-10-13 23:56:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.1588302752293578) internal successors, (6063), 5232 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 6063 transitions. [2024-10-13 23:56:03,256 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 6063 transitions. Word has length 240 [2024-10-13 23:56:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:03,257 INFO L471 AbstractCegarLoop]: Abstraction has 5233 states and 6063 transitions. [2024-10-13 23:56:03,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 6063 transitions. [2024-10-13 23:56:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-10-13 23:56:03,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:03,262 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:03,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:56:03,262 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:03,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1171070593, now seen corresponding path program 1 times [2024-10-13 23:56:03,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:03,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672861584] [2024-10-13 23:56:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:03,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-13 23:56:03,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672861584] [2024-10-13 23:56:03,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672861584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:03,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:03,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103272374] [2024-10-13 23:56:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:03,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:03,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:03,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:03,417 INFO L87 Difference]: Start difference. First operand 5233 states and 6063 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:04,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:04,862 INFO L93 Difference]: Finished difference Result 12592 states and 14782 transitions. [2024-10-13 23:56:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:04,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 252 [2024-10-13 23:56:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:04,895 INFO L225 Difference]: With dead ends: 12592 [2024-10-13 23:56:04,898 INFO L226 Difference]: Without dead ends: 6935 [2024-10-13 23:56:04,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:04,906 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:04,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:56:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2024-10-13 23:56:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6935. [2024-10-13 23:56:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 6934 states have (on average 1.1322468993366022) internal successors, (7851), 6934 states have internal predecessors, (7851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 7851 transitions. [2024-10-13 23:56:04,979 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 7851 transitions. Word has length 252 [2024-10-13 23:56:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:04,979 INFO L471 AbstractCegarLoop]: Abstraction has 6935 states and 7851 transitions. [2024-10-13 23:56:04,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 7851 transitions. [2024-10-13 23:56:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-10-13 23:56:04,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:04,982 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:04,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:56:04,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:04,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash 557252828, now seen corresponding path program 1 times [2024-10-13 23:56:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:04,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551097531] [2024-10-13 23:56:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:04,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-13 23:56:05,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551097531] [2024-10-13 23:56:05,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551097531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:05,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:05,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:05,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437595986] [2024-10-13 23:56:05,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:05,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:05,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:05,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:05,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:05,120 INFO L87 Difference]: Start difference. First operand 6935 states and 7851 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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) [2024-10-13 23:56:06,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:06,840 INFO L93 Difference]: Finished difference Result 16423 states and 18761 transitions. [2024-10-13 23:56:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:06,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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 292 [2024-10-13 23:56:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:06,859 INFO L225 Difference]: With dead ends: 16423 [2024-10-13 23:56:06,860 INFO L226 Difference]: Without dead ends: 9489 [2024-10-13 23:56:06,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:06,878 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 483 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:06,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 328 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 23:56:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9489 states. [2024-10-13 23:56:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9489 to 8635. [2024-10-13 23:56:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8635 states, 8634 states have (on average 1.1345842019921242) internal successors, (9796), 8634 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8635 states to 8635 states and 9796 transitions. [2024-10-13 23:56:07,061 INFO L78 Accepts]: Start accepts. Automaton has 8635 states and 9796 transitions. Word has length 292 [2024-10-13 23:56:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:07,062 INFO L471 AbstractCegarLoop]: Abstraction has 8635 states and 9796 transitions. [2024-10-13 23:56:07,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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) [2024-10-13 23:56:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states and 9796 transitions. [2024-10-13 23:56:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-13 23:56:07,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:07,068 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:07,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:56:07,070 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:07,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash -749460760, now seen corresponding path program 1 times [2024-10-13 23:56:07,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:07,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891166317] [2024-10-13 23:56:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:07,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:56:07,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891166317] [2024-10-13 23:56:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891166317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:07,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:07,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432785306] [2024-10-13 23:56:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:07,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:07,418 INFO L87 Difference]: Start difference. First operand 8635 states and 9796 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:09,098 INFO L93 Difference]: Finished difference Result 23688 states and 26989 transitions. [2024-10-13 23:56:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:09,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 309 [2024-10-13 23:56:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:09,144 INFO L225 Difference]: With dead ends: 23688 [2024-10-13 23:56:09,144 INFO L226 Difference]: Without dead ends: 15054 [2024-10-13 23:56:09,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:09,160 INFO L432 NwaCegarLoop]: 754 mSDtfsCounter, 480 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:09,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 804 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 23:56:09,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states. [2024-10-13 23:56:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 14181. [2024-10-13 23:56:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14181 states, 14180 states have (on average 1.1303244005641748) internal successors, (16028), 14180 states have internal predecessors, (16028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14181 states to 14181 states and 16028 transitions. [2024-10-13 23:56:09,593 INFO L78 Accepts]: Start accepts. Automaton has 14181 states and 16028 transitions. Word has length 309 [2024-10-13 23:56:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:09,597 INFO L471 AbstractCegarLoop]: Abstraction has 14181 states and 16028 transitions. [2024-10-13 23:56:09,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14181 states and 16028 transitions. [2024-10-13 23:56:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-10-13 23:56:09,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:09,607 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:09,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:56:09,607 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:09,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash -915268004, now seen corresponding path program 1 times [2024-10-13 23:56:09,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:09,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449236442] [2024-10-13 23:56:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:09,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:56:10,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:10,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449236442] [2024-10-13 23:56:10,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449236442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:10,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:10,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036083078] [2024-10-13 23:56:10,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:10,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:56:10,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:56:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:56:10,081 INFO L87 Difference]: Start difference. First operand 14181 states and 16028 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:12,424 INFO L93 Difference]: Finished difference Result 34770 states and 39274 transitions. [2024-10-13 23:56:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:56:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2024-10-13 23:56:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:12,451 INFO L225 Difference]: With dead ends: 34770 [2024-10-13 23:56:12,451 INFO L226 Difference]: Without dead ends: 20165 [2024-10-13 23:56:12,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:56:12,464 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 649 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:12,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 230 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-13 23:56:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20165 states. [2024-10-13 23:56:12,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20165 to 20163. [2024-10-13 23:56:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1312369804582878) internal successors, (22808), 20162 states have internal predecessors, (22808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22808 transitions. [2024-10-13 23:56:12,699 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22808 transitions. Word has length 359 [2024-10-13 23:56:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:12,700 INFO L471 AbstractCegarLoop]: Abstraction has 20163 states and 22808 transitions. [2024-10-13 23:56:12,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22808 transitions. [2024-10-13 23:56:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-10-13 23:56:12,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:12,710 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:12,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 23:56:12,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:12,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash 596566247, now seen corresponding path program 1 times [2024-10-13 23:56:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497239527] [2024-10-13 23:56:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:56:12,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:12,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497239527] [2024-10-13 23:56:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497239527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:12,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:12,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:12,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675270204] [2024-10-13 23:56:12,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:12,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:12,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:12,946 INFO L87 Difference]: Start difference. First operand 20163 states and 22808 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:14,446 INFO L93 Difference]: Finished difference Result 45881 states and 51903 transitions. [2024-10-13 23:56:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:14,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 380 [2024-10-13 23:56:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:14,496 INFO L225 Difference]: With dead ends: 45881 [2024-10-13 23:56:14,496 INFO L226 Difference]: Without dead ends: 25719 [2024-10-13 23:56:14,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:14,513 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 416 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:14,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 762 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:56:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25719 states. [2024-10-13 23:56:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25719 to 20152. [2024-10-13 23:56:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20152 states, 20151 states have (on average 1.131060493275768) internal successors, (22792), 20151 states have internal predecessors, (22792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20152 states to 20152 states and 22792 transitions. [2024-10-13 23:56:14,681 INFO L78 Accepts]: Start accepts. Automaton has 20152 states and 22792 transitions. Word has length 380 [2024-10-13 23:56:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:14,682 INFO L471 AbstractCegarLoop]: Abstraction has 20152 states and 22792 transitions. [2024-10-13 23:56:14,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 20152 states and 22792 transitions. [2024-10-13 23:56:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-10-13 23:56:14,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:14,688 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:56:14,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 23:56:14,689 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:14,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash 675043986, now seen corresponding path program 1 times [2024-10-13 23:56:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128803697] [2024-10-13 23:56:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-13 23:56:14,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:14,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128803697] [2024-10-13 23:56:14,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128803697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:14,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:14,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:14,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560380834] [2024-10-13 23:56:14,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:14,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:14,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:14,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:14,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:14,826 INFO L87 Difference]: Start difference. First operand 20152 states and 22792 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:16,476 INFO L93 Difference]: Finished difference Result 48403 states and 54962 transitions. [2024-10-13 23:56:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2024-10-13 23:56:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:16,507 INFO L225 Difference]: With dead ends: 48403 [2024-10-13 23:56:16,508 INFO L226 Difference]: Without dead ends: 28252 [2024-10-13 23:56:16,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:16,523 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 505 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:16,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 250 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 23:56:16,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2024-10-13 23:56:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 28235. [2024-10-13 23:56:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28235 states, 28234 states have (on average 1.1271162428277963) internal successors, (31823), 28234 states have internal predecessors, (31823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28235 states to 28235 states and 31823 transitions. [2024-10-13 23:56:16,773 INFO L78 Accepts]: Start accepts. Automaton has 28235 states and 31823 transitions. Word has length 381 [2024-10-13 23:56:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:16,773 INFO L471 AbstractCegarLoop]: Abstraction has 28235 states and 31823 transitions. [2024-10-13 23:56:16,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 28235 states and 31823 transitions. [2024-10-13 23:56:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-13 23:56:16,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:16,780 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:16,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:56:16,780 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:16,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1895794093, now seen corresponding path program 1 times [2024-10-13 23:56:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:16,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933610112] [2024-10-13 23:56:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:16,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 182 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:56:17,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933610112] [2024-10-13 23:56:17,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933610112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:56:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102792890] [2024-10-13 23:56:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:17,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:56:17,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:56:17,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:56:17,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:56:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:17,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 23:56:17,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:56:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 182 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:56:17,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:56:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:56:18,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102792890] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:56:18,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:56:18,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-13 23:56:18,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723498548] [2024-10-13 23:56:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:18,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:56:18,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:18,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:56:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:56:18,061 INFO L87 Difference]: Start difference. First operand 28235 states and 31823 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:20,598 INFO L93 Difference]: Finished difference Result 78206 states and 87756 transitions. [2024-10-13 23:56:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:56:20,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2024-10-13 23:56:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:20,649 INFO L225 Difference]: With dead ends: 78206 [2024-10-13 23:56:20,649 INFO L226 Difference]: Without dead ends: 48266 [2024-10-13 23:56:20,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:56:20,673 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 723 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:20,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 205 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-13 23:56:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48266 states. [2024-10-13 23:56:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48266 to 44009. [2024-10-13 23:56:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44009 states, 44008 states have (on average 1.1212961279767315) internal successors, (49346), 44008 states have internal predecessors, (49346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44009 states to 44009 states and 49346 transitions. [2024-10-13 23:56:21,492 INFO L78 Accepts]: Start accepts. Automaton has 44009 states and 49346 transitions. Word has length 388 [2024-10-13 23:56:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:21,493 INFO L471 AbstractCegarLoop]: Abstraction has 44009 states and 49346 transitions. [2024-10-13 23:56:21,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 44009 states and 49346 transitions. [2024-10-13 23:56:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-10-13 23:56:21,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:21,500 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:21,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:56:21,704 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,SelfDestructingSolverStorable13 [2024-10-13 23:56:21,705 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:21,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1986178580, now seen corresponding path program 1 times [2024-10-13 23:56:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664921974] [2024-10-13 23:56:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-13 23:56:21,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:21,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664921974] [2024-10-13 23:56:21,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664921974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:21,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:21,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240842170] [2024-10-13 23:56:21,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:21,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:21,923 INFO L87 Difference]: Start difference. First operand 44009 states and 49346 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:23,605 INFO L93 Difference]: Finished difference Result 102048 states and 114540 transitions. [2024-10-13 23:56:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:23,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 424 [2024-10-13 23:56:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:23,663 INFO L225 Difference]: With dead ends: 102048 [2024-10-13 23:56:23,663 INFO L226 Difference]: Without dead ends: 51646 [2024-10-13 23:56:23,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:23,691 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 499 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:23,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 732 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:56:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51646 states. [2024-10-13 23:56:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51646 to 51640. [2024-10-13 23:56:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51640 states, 51639 states have (on average 1.1066442030248456) internal successors, (57146), 51639 states have internal predecessors, (57146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51640 states to 51640 states and 57146 transitions. [2024-10-13 23:56:24,217 INFO L78 Accepts]: Start accepts. Automaton has 51640 states and 57146 transitions. Word has length 424 [2024-10-13 23:56:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:24,217 INFO L471 AbstractCegarLoop]: Abstraction has 51640 states and 57146 transitions. [2024-10-13 23:56:24,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 51640 states and 57146 transitions. [2024-10-13 23:56:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-10-13 23:56:24,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:24,223 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:24,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:56:24,223 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:24,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:24,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2026549864, now seen corresponding path program 1 times [2024-10-13 23:56:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:24,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508818386] [2024-10-13 23:56:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:24,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:56:24,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:24,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508818386] [2024-10-13 23:56:24,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508818386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:24,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:24,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:56:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846284889] [2024-10-13 23:56:24,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:24,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:56:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:56:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:56:24,986 INFO L87 Difference]: Start difference. First operand 51640 states and 57146 transitions. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 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) [2024-10-13 23:56:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:27,885 INFO L93 Difference]: Finished difference Result 132681 states and 146541 transitions. [2024-10-13 23:56:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:56:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 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 426 [2024-10-13 23:56:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:28,167 INFO L225 Difference]: With dead ends: 132681 [2024-10-13 23:56:28,167 INFO L226 Difference]: Without dead ends: 81042 [2024-10-13 23:56:28,187 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 [2024-10-13 23:56:28,188 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 765 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:28,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 171 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-13 23:56:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81042 states. [2024-10-13 23:56:29,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81042 to 77207. [2024-10-13 23:56:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77207 states, 77206 states have (on average 1.099163277465482) internal successors, (84862), 77206 states have internal predecessors, (84862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77207 states to 77207 states and 84862 transitions. [2024-10-13 23:56:29,385 INFO L78 Accepts]: Start accepts. Automaton has 77207 states and 84862 transitions. Word has length 426 [2024-10-13 23:56:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:29,385 INFO L471 AbstractCegarLoop]: Abstraction has 77207 states and 84862 transitions. [2024-10-13 23:56:29,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 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) [2024-10-13 23:56:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 77207 states and 84862 transitions. [2024-10-13 23:56:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-10-13 23:56:29,395 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:29,395 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:29,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:56:29,395 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:29,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1900155506, now seen corresponding path program 1 times [2024-10-13 23:56:29,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:29,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357360496] [2024-10-13 23:56:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:29,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-13 23:56:30,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:30,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357360496] [2024-10-13 23:56:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357360496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:30,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827456787] [2024-10-13 23:56:30,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:30,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:30,078 INFO L87 Difference]: Start difference. First operand 77207 states and 84862 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:31,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:31,791 INFO L93 Difference]: Finished difference Result 162092 states and 178525 transitions. [2024-10-13 23:56:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:31,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 469 [2024-10-13 23:56:31,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:31,889 INFO L225 Difference]: With dead ends: 162092 [2024-10-13 23:56:31,889 INFO L226 Difference]: Without dead ends: 84456 [2024-10-13 23:56:31,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:31,913 INFO L432 NwaCegarLoop]: 728 mSDtfsCounter, 335 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:31,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 791 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:56:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84456 states. [2024-10-13 23:56:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84456 to 81045. [2024-10-13 23:56:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81045 states, 81044 states have (on average 1.096478456147278) internal successors, (88863), 81044 states have internal predecessors, (88863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81045 states to 81045 states and 88863 transitions. [2024-10-13 23:56:33,037 INFO L78 Accepts]: Start accepts. Automaton has 81045 states and 88863 transitions. Word has length 469 [2024-10-13 23:56:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:33,038 INFO L471 AbstractCegarLoop]: Abstraction has 81045 states and 88863 transitions. [2024-10-13 23:56:33,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 81045 states and 88863 transitions. [2024-10-13 23:56:33,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2024-10-13 23:56:33,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:33,045 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:33,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 23:56:33,045 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:33,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:33,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2070340046, now seen corresponding path program 1 times [2024-10-13 23:56:33,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438830019] [2024-10-13 23:56:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:33,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:56:33,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:33,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438830019] [2024-10-13 23:56:33,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438830019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:56:33,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736371684] [2024-10-13 23:56:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:33,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:56:33,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:56:33,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:56:33,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:56:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:33,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 23:56:33,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:56:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:56:34,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:56:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:56:36,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736371684] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 23:56:36,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 23:56:36,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-13 23:56:36,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504793270] [2024-10-13 23:56:36,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 23:56:36,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 23:56:36,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 23:56:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:56:36,615 INFO L87 Difference]: Start difference. First operand 81045 states and 88863 transitions. Second operand has 8 states, 8 states have (on average 115.75) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:42,316 INFO L93 Difference]: Finished difference Result 198687 states and 218556 transitions. [2024-10-13 23:56:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 23:56:42,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 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 482 [2024-10-13 23:56:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:42,744 INFO L225 Difference]: With dead ends: 198687 [2024-10-13 23:56:42,744 INFO L226 Difference]: Without dead ends: 117643 [2024-10-13 23:56:42,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:56:42,792 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 2715 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 5231 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 5231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:42,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 303 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 5231 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-10-13 23:56:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117643 states. [2024-10-13 23:56:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117643 to 102729. [2024-10-13 23:56:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102729 states, 102728 states have (on average 1.0995541624484075) internal successors, (112955), 102728 states have internal predecessors, (112955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:44,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102729 states to 102729 states and 112955 transitions. [2024-10-13 23:56:44,259 INFO L78 Accepts]: Start accepts. Automaton has 102729 states and 112955 transitions. Word has length 482 [2024-10-13 23:56:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:44,260 INFO L471 AbstractCegarLoop]: Abstraction has 102729 states and 112955 transitions. [2024-10-13 23:56:44,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 102729 states and 112955 transitions. [2024-10-13 23:56:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-10-13 23:56:44,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:44,278 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:44,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 23:56:44,478 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,SelfDestructingSolverStorable17 [2024-10-13 23:56:44,479 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:44,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1018554904, now seen corresponding path program 1 times [2024-10-13 23:56:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:44,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566225331] [2024-10-13 23:56:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:56:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566225331] [2024-10-13 23:56:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566225331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:45,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:45,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:56:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109653352] [2024-10-13 23:56:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:45,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:56:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:56:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:56:45,076 INFO L87 Difference]: Start difference. First operand 102729 states and 112955 transitions. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:47,821 INFO L93 Difference]: Finished difference Result 222501 states and 245136 transitions. [2024-10-13 23:56:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:56:47,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 610 [2024-10-13 23:56:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:47,984 INFO L225 Difference]: With dead ends: 222501 [2024-10-13 23:56:47,984 INFO L226 Difference]: Without dead ends: 117628 [2024-10-13 23:56:48,031 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 [2024-10-13 23:56:48,032 INFO L432 NwaCegarLoop]: 582 mSDtfsCounter, 535 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:48,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 674 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-13 23:56:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117628 states. [2024-10-13 23:56:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117628 to 112514. [2024-10-13 23:56:49,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112514 states, 112513 states have (on average 1.0970998906792992) internal successors, (123438), 112513 states have internal predecessors, (123438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112514 states to 112514 states and 123438 transitions. [2024-10-13 23:56:49,774 INFO L78 Accepts]: Start accepts. Automaton has 112514 states and 123438 transitions. Word has length 610 [2024-10-13 23:56:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:49,774 INFO L471 AbstractCegarLoop]: Abstraction has 112514 states and 123438 transitions. [2024-10-13 23:56:49,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 112514 states and 123438 transitions. [2024-10-13 23:56:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2024-10-13 23:56:49,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:49,786 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:56:49,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 23:56:49,787 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:49,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash -261785315, now seen corresponding path program 1 times [2024-10-13 23:56:49,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:49,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528912128] [2024-10-13 23:56:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:49,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-13 23:56:50,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:50,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528912128] [2024-10-13 23:56:50,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528912128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:50,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:50,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:56:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032357531] [2024-10-13 23:56:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:50,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:56:50,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:56:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:50,331 INFO L87 Difference]: Start difference. First operand 112514 states and 123438 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:52,501 INFO L93 Difference]: Finished difference Result 236506 states and 259058 transitions. [2024-10-13 23:56:52,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:56:52,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 615 [2024-10-13 23:56:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:52,643 INFO L225 Difference]: With dead ends: 236506 [2024-10-13 23:56:52,644 INFO L226 Difference]: Without dead ends: 123567 [2024-10-13 23:56:52,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:56:52,697 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 443 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:52,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 370 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:56:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123567 states. [2024-10-13 23:56:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123567 to 113354. [2024-10-13 23:56:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113354 states, 113353 states have (on average 1.0907607209337202) internal successors, (123641), 113353 states have internal predecessors, (123641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113354 states to 113354 states and 123641 transitions. [2024-10-13 23:56:54,698 INFO L78 Accepts]: Start accepts. Automaton has 113354 states and 123641 transitions. Word has length 615 [2024-10-13 23:56:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:54,698 INFO L471 AbstractCegarLoop]: Abstraction has 113354 states and 123641 transitions. [2024-10-13 23:56:54,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 113354 states and 123641 transitions. [2024-10-13 23:56:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2024-10-13 23:56:54,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:54,710 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:54,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 23:56:54,710 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:54,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:54,710 INFO L85 PathProgramCache]: Analyzing trace with hash 669844733, now seen corresponding path program 1 times [2024-10-13 23:56:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:54,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17164382] [2024-10-13 23:56:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:54,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:56:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-10-13 23:56:54,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:56:54,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17164382] [2024-10-13 23:56:54,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17164382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:56:54,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:56:54,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:56:54,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821229139] [2024-10-13 23:56:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:56:54,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:56:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:56:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:56:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:56:54,988 INFO L87 Difference]: Start difference. First operand 113354 states and 123641 transitions. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:56:57,845 INFO L93 Difference]: Finished difference Result 236525 states and 257531 transitions. [2024-10-13 23:56:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:56:57,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 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 629 [2024-10-13 23:56:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:56:57,976 INFO L225 Difference]: With dead ends: 236525 [2024-10-13 23:56:57,976 INFO L226 Difference]: Without dead ends: 123172 [2024-10-13 23:56:58,319 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 [2024-10-13 23:56:58,320 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 861 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:56:58,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 778 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-13 23:56:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123172 states. [2024-10-13 23:56:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123172 to 112929. [2024-10-13 23:56:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112929 states, 112928 states have (on average 1.090632969679796) internal successors, (123163), 112928 states have internal predecessors, (123163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112929 states to 112929 states and 123163 transitions. [2024-10-13 23:56:59,877 INFO L78 Accepts]: Start accepts. Automaton has 112929 states and 123163 transitions. Word has length 629 [2024-10-13 23:56:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:56:59,878 INFO L471 AbstractCegarLoop]: Abstraction has 112929 states and 123163 transitions. [2024-10-13 23:56:59,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:56:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 112929 states and 123163 transitions. [2024-10-13 23:56:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-10-13 23:56:59,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:56:59,894 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:56:59,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 23:56:59,894 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:56:59,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:56:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash -477247459, now seen corresponding path program 1 times [2024-10-13 23:56:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:56:59,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140199472] [2024-10-13 23:56:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:56:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:56:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:57:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-13 23:57:00,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:57:00,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140199472] [2024-10-13 23:57:00,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140199472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:57:00,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:57:00,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:57:00,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848914649] [2024-10-13 23:57:00,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:57:00,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:57:00,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:57:00,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:57:00,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:57:00,696 INFO L87 Difference]: Start difference. First operand 112929 states and 123163 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:02,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:57:02,868 INFO L93 Difference]: Finished difference Result 236069 states and 257092 transitions. [2024-10-13 23:57:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:57:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 637 [2024-10-13 23:57:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:57:03,017 INFO L225 Difference]: With dead ends: 236069 [2024-10-13 23:57:03,021 INFO L226 Difference]: Without dead ends: 119735 [2024-10-13 23:57:03,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:57:03,129 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 312 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:57:03,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 592 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:57:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119735 states. [2024-10-13 23:57:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119735 to 116326. [2024-10-13 23:57:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116326 states, 116325 states have (on average 1.084642166344294) internal successors, (126171), 116325 states have internal predecessors, (126171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116326 states to 116326 states and 126171 transitions. [2024-10-13 23:57:04,615 INFO L78 Accepts]: Start accepts. Automaton has 116326 states and 126171 transitions. Word has length 637 [2024-10-13 23:57:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:57:04,615 INFO L471 AbstractCegarLoop]: Abstraction has 116326 states and 126171 transitions. [2024-10-13 23:57:04,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 116326 states and 126171 transitions. [2024-10-13 23:57:04,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-10-13 23:57:04,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:57:04,625 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:57:04,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 23:57:04,625 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:57:04,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:57:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash 459645910, now seen corresponding path program 1 times [2024-10-13 23:57:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:57:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543120792] [2024-10-13 23:57:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:57:04,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:57:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:57:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:57:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:57:05,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543120792] [2024-10-13 23:57:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543120792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:57:05,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:57:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:57:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400794327] [2024-10-13 23:57:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:57:05,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:57:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:57:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:57:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:57:05,498 INFO L87 Difference]: Start difference. First operand 116326 states and 126171 transitions. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:57:08,254 INFO L93 Difference]: Finished difference Result 253087 states and 274201 transitions. [2024-10-13 23:57:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:57:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 641 [2024-10-13 23:57:08,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:57:08,410 INFO L225 Difference]: With dead ends: 253087 [2024-10-13 23:57:08,410 INFO L226 Difference]: Without dead ends: 135487 [2024-10-13 23:57:08,471 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 [2024-10-13 23:57:08,472 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 530 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:57:08,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 628 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 23:57:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135487 states. [2024-10-13 23:57:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135487 to 122712. [2024-10-13 23:57:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122712 states, 122711 states have (on average 1.0825272387968479) internal successors, (132838), 122711 states have internal predecessors, (132838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122712 states to 122712 states and 132838 transitions. [2024-10-13 23:57:10,392 INFO L78 Accepts]: Start accepts. Automaton has 122712 states and 132838 transitions. Word has length 641 [2024-10-13 23:57:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:57:10,392 INFO L471 AbstractCegarLoop]: Abstraction has 122712 states and 132838 transitions. [2024-10-13 23:57:10,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 122712 states and 132838 transitions. [2024-10-13 23:57:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2024-10-13 23:57:10,411 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:57:10,412 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:57:10,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 23:57:10,413 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:57:10,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:57:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500461, now seen corresponding path program 1 times [2024-10-13 23:57:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:57:10,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730584300] [2024-10-13 23:57:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:57:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:57:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:57:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-13 23:57:10,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:57:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730584300] [2024-10-13 23:57:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730584300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:57:10,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:57:10,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:57:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984351247] [2024-10-13 23:57:10,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:57:10,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:57:10,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:57:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:57:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:57:10,769 INFO L87 Difference]: Start difference. First operand 122712 states and 132838 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 2 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:57:12,161 INFO L93 Difference]: Finished difference Result 234322 states and 252604 transitions. [2024-10-13 23:57:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:57:12,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 2 states have internal predecessors, (449), 0 states have call successors, (0), 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 652 [2024-10-13 23:57:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:57:12,295 INFO L225 Difference]: With dead ends: 234322 [2024-10-13 23:57:12,295 INFO L226 Difference]: Without dead ends: 111610 [2024-10-13 23:57:12,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:57:12,343 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 398 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:57:12,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 86 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:57:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111610 states. [2024-10-13 23:57:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111610 to 111171. [2024-10-13 23:57:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111171 states, 111170 states have (on average 1.072996311954664) internal successors, (119285), 111170 states have internal predecessors, (119285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111171 states to 111171 states and 119285 transitions. [2024-10-13 23:57:13,928 INFO L78 Accepts]: Start accepts. Automaton has 111171 states and 119285 transitions. Word has length 652 [2024-10-13 23:57:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:57:13,928 INFO L471 AbstractCegarLoop]: Abstraction has 111171 states and 119285 transitions. [2024-10-13 23:57:13,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 2 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:57:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 111171 states and 119285 transitions. [2024-10-13 23:57:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2024-10-13 23:57:13,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:57:13,938 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:57:13,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 23:57:13,939 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:57:13,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:57:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash 695517289, now seen corresponding path program 1 times [2024-10-13 23:57:13,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:57:13,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285072856] [2024-10-13 23:57:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:57:13,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:57:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat