./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label38.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 e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:19:08,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:19:09,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:19:09,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:19:09,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:19:09,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:19:09,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:19:09,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:19:09,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:19:09,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:19:09,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:19:09,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:19:09,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:19:09,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:19:09,059 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:19:09,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:19:09,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:19:09,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:19:09,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:19:09,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:19:09,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:19:09,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:19:09,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:19:09,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:19:09,066 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:19:09,067 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:19:09,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:19:09,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:19:09,067 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:19:09,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:19:09,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:19:09,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:19:09,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:19:09,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:19:09,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:19:09,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:19:09,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:19:09,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:19:09,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:19:09,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:19:09,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:19:09,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:19:09,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d [2024-11-16 04:19:09,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:19:09,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:19:09,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:19:09,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:19:09,359 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:19:09,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2024-11-16 04:19:10,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:19:11,195 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:19:11,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2024-11-16 04:19:11,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74179f501/f47bf7e5e5f74f4e9dc1edb84dd2c594/FLAG77d796769 [2024-11-16 04:19:11,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74179f501/f47bf7e5e5f74f4e9dc1edb84dd2c594 [2024-11-16 04:19:11,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:19:11,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:19:11,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:19:11,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:19:11,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:19:11,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:11" (1/1) ... [2024-11-16 04:19:11,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f0b846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:11, skipping insertion in model container [2024-11-16 04:19:11,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:19:11" (1/1) ... [2024-11-16 04:19:11,337 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:19:11,621 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c[7744,7757] [2024-11-16 04:19:12,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:19:12,120 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:19:12,147 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c[7744,7757] [2024-11-16 04:19:12,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:19:12,420 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:19:12,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12 WrapperNode [2024-11-16 04:19:12,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:19:12,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:19:12,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:19:12,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:19:12,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:12,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:12,728 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:19:12,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:19:12,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:19:12,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:19:12,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:19:12,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:12,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:12,787 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,004 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:19:13,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,144 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:19:13,233 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:19:13,233 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:19:13,234 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:19:13,234 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (1/1) ... [2024-11-16 04:19:13,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:19:13,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:13,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:19:13,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:19:13,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:19:13,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:19:13,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:19:13,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:19:13,411 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:19:13,413 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:19:16,665 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:19:16,800 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:19:16,802 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:19:16,832 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:19:16,832 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:19:16,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:19:16 BoogieIcfgContainer [2024-11-16 04:19:16,833 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:19:16,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:19:16,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:19:16,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:19:16,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:19:11" (1/3) ... [2024-11-16 04:19:16,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1a5aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:16, skipping insertion in model container [2024-11-16 04:19:16,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:19:12" (2/3) ... [2024-11-16 04:19:16,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1a5aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:19:16, skipping insertion in model container [2024-11-16 04:19:16,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:19:16" (3/3) ... [2024-11-16 04:19:16,844 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label38.c [2024-11-16 04:19:16,861 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:19:16,861 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:19:16,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:19:16,961 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;@11f9005d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:19:16,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:19:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 04:19:16,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:16,980 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:16,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:16,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1236960813, now seen corresponding path program 1 times [2024-11-16 04:19:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:16,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472661873] [2024-11-16 04:19:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:16,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:17,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472661873] [2024-11-16 04:19:17,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472661873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:17,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:17,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:19:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783743685] [2024-11-16 04:19:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:17,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:17,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:17,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:17,434 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:19,788 INFO L93 Difference]: Finished difference Result 1648 states and 3030 transitions. [2024-11-16 04:19:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:19,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-16 04:19:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:19,806 INFO L225 Difference]: With dead ends: 1648 [2024-11-16 04:19:19,806 INFO L226 Difference]: Without dead ends: 978 [2024-11-16 04:19:19,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:19,814 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 438 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:19,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 555 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:19:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-16 04:19:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-16 04:19:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.5061601642710472) internal successors, (1467), 974 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1467 transitions. [2024-11-16 04:19:19,911 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1467 transitions. Word has length 54 [2024-11-16 04:19:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:19,912 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1467 transitions. [2024-11-16 04:19:19,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1467 transitions. [2024-11-16 04:19:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-16 04:19:19,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:19,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:19,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:19:19,919 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:19,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1406487634, now seen corresponding path program 1 times [2024-11-16 04:19:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:19,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569618072] [2024-11-16 04:19:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:20,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:20,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569618072] [2024-11-16 04:19:20,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569618072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:20,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:20,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:20,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167668415] [2024-11-16 04:19:20,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:20,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:20,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:20,293 INFO L87 Difference]: Start difference. First operand 975 states and 1467 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:22,578 INFO L93 Difference]: Finished difference Result 2822 states and 4250 transitions. [2024-11-16 04:19:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-11-16 04:19:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:22,587 INFO L225 Difference]: With dead ends: 2822 [2024-11-16 04:19:22,588 INFO L226 Difference]: Without dead ends: 1849 [2024-11-16 04:19:22,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:22,593 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 439 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:22,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 926 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:19:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-16 04:19:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1847. [2024-11-16 04:19:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 1.3591549295774648) internal successors, (2509), 1846 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2509 transitions. [2024-11-16 04:19:22,642 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2509 transitions. Word has length 125 [2024-11-16 04:19:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:22,644 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 2509 transitions. [2024-11-16 04:19:22,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2509 transitions. [2024-11-16 04:19:22,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-16 04:19:22,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:22,654 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:22,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:19:22,654 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:22,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2143538397, now seen corresponding path program 1 times [2024-11-16 04:19:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408310583] [2024-11-16 04:19:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:22,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:22,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408310583] [2024-11-16 04:19:22,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408310583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:22,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:22,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:19:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447398482] [2024-11-16 04:19:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:22,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:22,914 INFO L87 Difference]: Start difference. First operand 1847 states and 2509 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:24,784 INFO L93 Difference]: Finished difference Result 5409 states and 7340 transitions. [2024-11-16 04:19:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2024-11-16 04:19:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:24,795 INFO L225 Difference]: With dead ends: 5409 [2024-11-16 04:19:24,796 INFO L226 Difference]: Without dead ends: 2708 [2024-11-16 04:19:24,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:24,801 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 369 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:24,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 593 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 04:19:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-16 04:19:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2024-11-16 04:19:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2707 states have (on average 1.1913557443664573) internal successors, (3225), 2707 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3225 transitions. [2024-11-16 04:19:24,851 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3225 transitions. Word has length 147 [2024-11-16 04:19:24,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:24,853 INFO L471 AbstractCegarLoop]: Abstraction has 2708 states and 3225 transitions. [2024-11-16 04:19:24,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3225 transitions. [2024-11-16 04:19:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-16 04:19:24,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:24,861 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:24,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:19:24,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:24,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:24,862 INFO L85 PathProgramCache]: Analyzing trace with hash -999507006, now seen corresponding path program 1 times [2024-11-16 04:19:24,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:24,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127551780] [2024-11-16 04:19:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:24,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:25,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:25,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127551780] [2024-11-16 04:19:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127551780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:25,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:25,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:25,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030011317] [2024-11-16 04:19:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:25,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:25,127 INFO L87 Difference]: Start difference. First operand 2708 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:26,665 INFO L93 Difference]: Finished difference Result 7126 states and 8616 transitions. [2024-11-16 04:19:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:26,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-11-16 04:19:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:26,680 INFO L225 Difference]: With dead ends: 7126 [2024-11-16 04:19:26,681 INFO L226 Difference]: Without dead ends: 4420 [2024-11-16 04:19:26,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:26,686 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 496 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:26,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 789 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:19:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-11-16 04:19:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4420. [2024-11-16 04:19:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 1.170174247567323) internal successors, (5171), 4419 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5171 transitions. [2024-11-16 04:19:26,760 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5171 transitions. Word has length 208 [2024-11-16 04:19:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:26,761 INFO L471 AbstractCegarLoop]: Abstraction has 4420 states and 5171 transitions. [2024-11-16 04:19:26,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:26,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5171 transitions. [2024-11-16 04:19:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-16 04:19:26,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:26,767 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:19:26,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:19:26,767 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:26,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1692154339, now seen corresponding path program 1 times [2024-11-16 04:19:26,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:26,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721343981] [2024-11-16 04:19:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:19:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721343981] [2024-11-16 04:19:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721343981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403112846] [2024-11-16 04:19:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:27,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:27,002 INFO L87 Difference]: Start difference. First operand 4420 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:28,538 INFO L93 Difference]: Finished difference Result 10963 states and 12997 transitions. [2024-11-16 04:19:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:28,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 210 [2024-11-16 04:19:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:28,562 INFO L225 Difference]: With dead ends: 10963 [2024-11-16 04:19:28,562 INFO L226 Difference]: Without dead ends: 6544 [2024-11-16 04:19:28,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:28,571 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 399 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:28,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 449 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:19:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2024-11-16 04:19:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 4393. [2024-11-16 04:19:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 4392 states have (on average 1.1680327868852458) internal successors, (5130), 4392 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 5130 transitions. [2024-11-16 04:19:28,670 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 5130 transitions. Word has length 210 [2024-11-16 04:19:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:28,670 INFO L471 AbstractCegarLoop]: Abstraction has 4393 states and 5130 transitions. [2024-11-16 04:19:28,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 5130 transitions. [2024-11-16 04:19:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-16 04:19:28,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:28,674 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:19:28,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:19:28,675 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:28,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash -454787163, now seen corresponding path program 1 times [2024-11-16 04:19:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:28,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198640949] [2024-11-16 04:19:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:28,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:29,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:29,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198640949] [2024-11-16 04:19:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198640949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918068220] [2024-11-16 04:19:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:29,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:29,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:19:29,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:19:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:29,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:19:29,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:19:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:29,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:19:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918068220] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:30,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:19:30,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:19:30,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287826086] [2024-11-16 04:19:30,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:30,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:30,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:30,127 INFO L87 Difference]: Start difference. First operand 4393 states and 5130 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:32,686 INFO L93 Difference]: Finished difference Result 15208 states and 17919 transitions. [2024-11-16 04:19:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2024-11-16 04:19:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:32,715 INFO L225 Difference]: With dead ends: 15208 [2024-11-16 04:19:32,716 INFO L226 Difference]: Without dead ends: 10817 [2024-11-16 04:19:32,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:32,729 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 813 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:32,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 163 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 04:19:32,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10817 states. [2024-11-16 04:19:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10817 to 10815. [2024-11-16 04:19:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10815 states, 10814 states have (on average 1.170612169410024) internal successors, (12659), 10814 states have internal predecessors, (12659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10815 states to 10815 states and 12659 transitions. [2024-11-16 04:19:32,918 INFO L78 Accepts]: Start accepts. Automaton has 10815 states and 12659 transitions. Word has length 276 [2024-11-16 04:19:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:32,918 INFO L471 AbstractCegarLoop]: Abstraction has 10815 states and 12659 transitions. [2024-11-16 04:19:32,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 10815 states and 12659 transitions. [2024-11-16 04:19:32,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-16 04:19:32,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:32,923 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:32,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:19:33,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 04:19:33,124 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:33,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:33,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1915326455, now seen corresponding path program 1 times [2024-11-16 04:19:33,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64642108] [2024-11-16 04:19:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:33,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-16 04:19:33,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:33,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64642108] [2024-11-16 04:19:33,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64642108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:33,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145136015] [2024-11-16 04:19:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:33,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:33,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:33,387 INFO L87 Difference]: Start difference. First operand 10815 states and 12659 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:34,979 INFO L93 Difference]: Finished difference Result 23760 states and 27850 transitions. [2024-11-16 04:19:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2024-11-16 04:19:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:35,009 INFO L225 Difference]: With dead ends: 23760 [2024-11-16 04:19:35,009 INFO L226 Difference]: Without dead ends: 12521 [2024-11-16 04:19:35,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:35,023 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:35,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:19:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12521 states. [2024-11-16 04:19:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12521 to 12521. [2024-11-16 04:19:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 12520 states have (on average 1.1497603833865815) internal successors, (14395), 12520 states have internal predecessors, (14395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 14395 transitions. [2024-11-16 04:19:35,194 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 14395 transitions. Word has length 289 [2024-11-16 04:19:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:35,195 INFO L471 AbstractCegarLoop]: Abstraction has 12521 states and 14395 transitions. [2024-11-16 04:19:35,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 14395 transitions. [2024-11-16 04:19:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-16 04:19:35,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:35,201 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:19:35,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:19:35,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:35,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1715667770, now seen corresponding path program 1 times [2024-11-16 04:19:35,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:35,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055933129] [2024-11-16 04:19:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-16 04:19:35,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:35,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055933129] [2024-11-16 04:19:35,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055933129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:35,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:35,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:35,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106319673] [2024-11-16 04:19:35,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:35,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:35,425 INFO L87 Difference]: Start difference. First operand 12521 states and 14395 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:37,044 INFO L93 Difference]: Finished difference Result 30582 states and 35046 transitions. [2024-11-16 04:19:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 329 [2024-11-16 04:19:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:37,076 INFO L225 Difference]: With dead ends: 30582 [2024-11-16 04:19:37,077 INFO L226 Difference]: Without dead ends: 17629 [2024-11-16 04:19:37,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:37,091 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 445 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:37,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 364 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:19:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17629 states. [2024-11-16 04:19:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17629 to 15922. [2024-11-16 04:19:37,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15922 states, 15921 states have (on average 1.1316500219835437) internal successors, (18017), 15921 states have internal predecessors, (18017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 18017 transitions. [2024-11-16 04:19:37,439 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 18017 transitions. Word has length 329 [2024-11-16 04:19:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:37,440 INFO L471 AbstractCegarLoop]: Abstraction has 15922 states and 18017 transitions. [2024-11-16 04:19:37,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:37,442 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 18017 transitions. [2024-11-16 04:19:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-16 04:19:37,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:37,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:37,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:19:37,453 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:37,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash -238025083, now seen corresponding path program 1 times [2024-11-16 04:19:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:37,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447842858] [2024-11-16 04:19:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:37,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447842858] [2024-11-16 04:19:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447842858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:37,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:37,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:37,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726409789] [2024-11-16 04:19:37,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:37,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:37,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:37,887 INFO L87 Difference]: Start difference. First operand 15922 states and 18017 transitions. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:40,159 INFO L93 Difference]: Finished difference Result 46380 states and 52364 transitions. [2024-11-16 04:19:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 394 [2024-11-16 04:19:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:40,207 INFO L225 Difference]: With dead ends: 46380 [2024-11-16 04:19:40,208 INFO L226 Difference]: Without dead ends: 28752 [2024-11-16 04:19:40,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:40,224 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 521 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:40,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 391 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:19:40,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28752 states. [2024-11-16 04:19:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28752 to 27451. [2024-11-16 04:19:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27451 states, 27450 states have (on average 1.121967213114754) internal successors, (30798), 27450 states have internal predecessors, (30798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27451 states to 27451 states and 30798 transitions. [2024-11-16 04:19:40,531 INFO L78 Accepts]: Start accepts. Automaton has 27451 states and 30798 transitions. Word has length 394 [2024-11-16 04:19:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:40,532 INFO L471 AbstractCegarLoop]: Abstraction has 27451 states and 30798 transitions. [2024-11-16 04:19:40,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 27451 states and 30798 transitions. [2024-11-16 04:19:40,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-16 04:19:40,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:40,555 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:19:40,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:19:40,556 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:40,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash -815524075, now seen corresponding path program 1 times [2024-11-16 04:19:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:40,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834896515] [2024-11-16 04:19:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:19:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834896515] [2024-11-16 04:19:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834896515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:41,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892337829] [2024-11-16 04:19:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:41,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:41,115 INFO L87 Difference]: Start difference. First operand 27451 states and 30798 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:42,694 INFO L93 Difference]: Finished difference Result 66421 states and 74482 transitions. [2024-11-16 04:19:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 492 [2024-11-16 04:19:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:42,868 INFO L225 Difference]: With dead ends: 66421 [2024-11-16 04:19:42,868 INFO L226 Difference]: Without dead ends: 38537 [2024-11-16 04:19:42,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:42,883 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 470 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:42,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 159 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38537 states. [2024-11-16 04:19:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38537 to 35538. [2024-11-16 04:19:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35538 states, 35537 states have (on average 1.1246869459999438) internal successors, (39968), 35537 states have internal predecessors, (39968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35538 states to 35538 states and 39968 transitions. [2024-11-16 04:19:43,300 INFO L78 Accepts]: Start accepts. Automaton has 35538 states and 39968 transitions. Word has length 492 [2024-11-16 04:19:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:43,301 INFO L471 AbstractCegarLoop]: Abstraction has 35538 states and 39968 transitions. [2024-11-16 04:19:43,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 35538 states and 39968 transitions. [2024-11-16 04:19:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-16 04:19:43,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:43,337 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:43,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:19:43,338 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:43,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:43,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1271251347, now seen corresponding path program 1 times [2024-11-16 04:19:43,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:43,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936340508] [2024-11-16 04:19:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:43,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2024-11-16 04:19:43,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:43,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936340508] [2024-11-16 04:19:43,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936340508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:43,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:43,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:43,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188206827] [2024-11-16 04:19:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:43,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:43,793 INFO L87 Difference]: Start difference. First operand 35538 states and 39968 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:45,427 INFO L93 Difference]: Finished difference Result 78321 states and 87900 transitions. [2024-11-16 04:19:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:45,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 601 [2024-11-16 04:19:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:45,480 INFO L225 Difference]: With dead ends: 78321 [2024-11-16 04:19:45,480 INFO L226 Difference]: Without dead ends: 40219 [2024-11-16 04:19:45,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:45,511 INFO L432 NwaCegarLoop]: 651 mSDtfsCounter, 498 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:45,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 696 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40219 states. [2024-11-16 04:19:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40219 to 38935. [2024-11-16 04:19:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38935 states, 38934 states have (on average 1.1055632609030668) internal successors, (43044), 38934 states have internal predecessors, (43044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38935 states to 38935 states and 43044 transitions. [2024-11-16 04:19:46,104 INFO L78 Accepts]: Start accepts. Automaton has 38935 states and 43044 transitions. Word has length 601 [2024-11-16 04:19:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:46,105 INFO L471 AbstractCegarLoop]: Abstraction has 38935 states and 43044 transitions. [2024-11-16 04:19:46,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 38935 states and 43044 transitions. [2024-11-16 04:19:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-16 04:19:46,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:46,132 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:46,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:19:46,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:46,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -443085184, now seen corresponding path program 1 times [2024-11-16 04:19:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381291463] [2024-11-16 04:19:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-16 04:19:47,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381291463] [2024-11-16 04:19:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381291463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:47,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891769028] [2024-11-16 04:19:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:47,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:47,484 INFO L87 Difference]: Start difference. First operand 38935 states and 43044 transitions. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:48,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:48,927 INFO L93 Difference]: Finished difference Result 77867 states and 86085 transitions. [2024-11-16 04:19:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:48,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 624 [2024-11-16 04:19:48,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:48,982 INFO L225 Difference]: With dead ends: 77867 [2024-11-16 04:19:48,982 INFO L226 Difference]: Without dead ends: 38934 [2024-11-16 04:19:49,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:49,014 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 572 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:49,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 552 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:19:49,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38934 states. [2024-11-16 04:19:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38934 to 38934. [2024-11-16 04:19:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38934 states, 38933 states have (on average 1.105360491100095) internal successors, (43035), 38933 states have internal predecessors, (43035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38934 states to 38934 states and 43035 transitions. [2024-11-16 04:19:49,542 INFO L78 Accepts]: Start accepts. Automaton has 38934 states and 43035 transitions. Word has length 624 [2024-11-16 04:19:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:49,543 INFO L471 AbstractCegarLoop]: Abstraction has 38934 states and 43035 transitions. [2024-11-16 04:19:49,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 38934 states and 43035 transitions. [2024-11-16 04:19:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2024-11-16 04:19:49,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:49,577 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:19:49,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:19:49,578 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:49,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash 567878129, now seen corresponding path program 1 times [2024-11-16 04:19:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:49,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618563924] [2024-11-16 04:19:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:49,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 04:19:50,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:50,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618563924] [2024-11-16 04:19:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618563924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:50,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:50,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:19:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573889938] [2024-11-16 04:19:50,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:50,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:50,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:50,714 INFO L87 Difference]: Start difference. First operand 38934 states and 43035 transitions. Second operand has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:53,199 INFO L93 Difference]: Finished difference Result 96238 states and 106304 transitions. [2024-11-16 04:19:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 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 656 [2024-11-16 04:19:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:53,270 INFO L225 Difference]: With dead ends: 96238 [2024-11-16 04:19:53,270 INFO L226 Difference]: Without dead ends: 57306 [2024-11-16 04:19:53,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:53,304 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 571 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:53,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 165 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:19:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57306 states. [2024-11-16 04:19:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57306 to 55168. [2024-11-16 04:19:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55168 states, 55167 states have (on average 1.102506933492849) internal successors, (60822), 55167 states have internal predecessors, (60822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55168 states to 55168 states and 60822 transitions. [2024-11-16 04:19:53,905 INFO L78 Accepts]: Start accepts. Automaton has 55168 states and 60822 transitions. Word has length 656 [2024-11-16 04:19:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:53,906 INFO L471 AbstractCegarLoop]: Abstraction has 55168 states and 60822 transitions. [2024-11-16 04:19:53,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 55168 states and 60822 transitions. [2024-11-16 04:19:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2024-11-16 04:19:53,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:53,928 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:19:53,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:19:53,928 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:53,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:53,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1047120546, now seen corresponding path program 1 times [2024-11-16 04:19:53,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:53,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705559996] [2024-11-16 04:19:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:19:54,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:54,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705559996] [2024-11-16 04:19:54,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705559996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:54,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:54,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784306447] [2024-11-16 04:19:54,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:54,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:54,638 INFO L87 Difference]: Start difference. First operand 55168 states and 60822 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:56,122 INFO L93 Difference]: Finished difference Result 117153 states and 129131 transitions. [2024-11-16 04:19:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 709 [2024-11-16 04:19:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:56,187 INFO L225 Difference]: With dead ends: 117153 [2024-11-16 04:19:56,187 INFO L226 Difference]: Without dead ends: 61559 [2024-11-16 04:19:56,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:56,222 INFO L432 NwaCegarLoop]: 680 mSDtfsCounter, 212 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:56,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 733 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:19:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61559 states. [2024-11-16 04:19:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61559 to 61555. [2024-11-16 04:19:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61555 states, 61554 states have (on average 1.0972966825876467) internal successors, (67543), 61554 states have internal predecessors, (67543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61555 states to 61555 states and 67543 transitions. [2024-11-16 04:19:56,947 INFO L78 Accepts]: Start accepts. Automaton has 61555 states and 67543 transitions. Word has length 709 [2024-11-16 04:19:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:56,948 INFO L471 AbstractCegarLoop]: Abstraction has 61555 states and 67543 transitions. [2024-11-16 04:19:56,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 61555 states and 67543 transitions. [2024-11-16 04:19:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2024-11-16 04:19:56,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:56,974 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:56,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:19:56,974 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:56,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 529125052, now seen corresponding path program 1 times [2024-11-16 04:19:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:56,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447148308] [2024-11-16 04:19:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:56,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2024-11-16 04:19:57,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:57,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447148308] [2024-11-16 04:19:57,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447148308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:57,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:57,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:57,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730681525] [2024-11-16 04:19:57,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:57,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:57,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:57,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:57,777 INFO L87 Difference]: Start difference. First operand 61555 states and 67543 transitions. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:59,374 INFO L93 Difference]: Finished difference Result 128206 states and 140328 transitions. [2024-11-16 04:19:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 718 [2024-11-16 04:19:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:59,443 INFO L225 Difference]: With dead ends: 128206 [2024-11-16 04:19:59,443 INFO L226 Difference]: Without dead ends: 64519 [2024-11-16 04:19:59,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:59,467 INFO L432 NwaCegarLoop]: 684 mSDtfsCounter, 452 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:59,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 730 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:19:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64519 states. [2024-11-16 04:20:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64519 to 62810. [2024-11-16 04:20:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62810 states, 62809 states have (on average 1.0857042780493242) internal successors, (68192), 62809 states have internal predecessors, (68192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62810 states to 62810 states and 68192 transitions. [2024-11-16 04:20:00,388 INFO L78 Accepts]: Start accepts. Automaton has 62810 states and 68192 transitions. Word has length 718 [2024-11-16 04:20:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:00,389 INFO L471 AbstractCegarLoop]: Abstraction has 62810 states and 68192 transitions. [2024-11-16 04:20:00,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 62810 states and 68192 transitions. [2024-11-16 04:20:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2024-11-16 04:20:00,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:00,438 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:00,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:20:00,438 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:00,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash -129837531, now seen corresponding path program 1 times [2024-11-16 04:20:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:00,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636228571] [2024-11-16 04:20:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 648 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:20:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:01,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636228571] [2024-11-16 04:20:01,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636228571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:01,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:01,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:20:01,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736476601] [2024-11-16 04:20:01,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:01,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:20:01,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:20:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:20:01,262 INFO L87 Difference]: Start difference. First operand 62810 states and 68192 transitions. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:03,715 INFO L93 Difference]: Finished difference Result 147810 states and 159921 transitions. [2024-11-16 04:20:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:20:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 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 764 [2024-11-16 04:20:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:03,805 INFO L225 Difference]: With dead ends: 147810 [2024-11-16 04:20:03,805 INFO L226 Difference]: Without dead ends: 82446 [2024-11-16 04:20:03,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:20:03,842 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 635 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:03,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 156 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:20:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82446 states. [2024-11-16 04:20:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82446 to 73468. [2024-11-16 04:20:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73468 states, 73467 states have (on average 1.083792723263506) internal successors, (79623), 73467 states have internal predecessors, (79623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73468 states to 73468 states and 79623 transitions. [2024-11-16 04:20:04,823 INFO L78 Accepts]: Start accepts. Automaton has 73468 states and 79623 transitions. Word has length 764 [2024-11-16 04:20:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:04,824 INFO L471 AbstractCegarLoop]: Abstraction has 73468 states and 79623 transitions. [2024-11-16 04:20:04,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 73468 states and 79623 transitions. [2024-11-16 04:20:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2024-11-16 04:20:04,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:04,856 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:04,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:20:04,857 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:04,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1839198551, now seen corresponding path program 1 times [2024-11-16 04:20:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:04,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229020638] [2024-11-16 04:20:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:04,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-16 04:20:05,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229020638] [2024-11-16 04:20:05,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229020638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:05,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:05,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:20:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626606607] [2024-11-16 04:20:05,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:05,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:20:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:20:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:05,872 INFO L87 Difference]: Start difference. First operand 73468 states and 79623 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:07,644 INFO L93 Difference]: Finished difference Result 160171 states and 173416 transitions. [2024-11-16 04:20:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:20:07,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 849 [2024-11-16 04:20:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:07,745 INFO L225 Difference]: With dead ends: 160171 [2024-11-16 04:20:07,745 INFO L226 Difference]: Without dead ends: 86705 [2024-11-16 04:20:07,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:07,758 INFO L432 NwaCegarLoop]: 696 mSDtfsCounter, 325 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:07,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 740 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:20:07,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86705 states. [2024-11-16 04:20:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86705 to 85407. [2024-11-16 04:20:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85407 states, 85406 states have (on average 1.0750884012832822) internal successors, (91819), 85406 states have internal predecessors, (91819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85407 states to 85407 states and 91819 transitions. [2024-11-16 04:20:08,936 INFO L78 Accepts]: Start accepts. Automaton has 85407 states and 91819 transitions. Word has length 849 [2024-11-16 04:20:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:08,936 INFO L471 AbstractCegarLoop]: Abstraction has 85407 states and 91819 transitions. [2024-11-16 04:20:08,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 85407 states and 91819 transitions. [2024-11-16 04:20:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2024-11-16 04:20:09,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:09,003 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:20:09,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 04:20:09,003 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:09,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1539438095, now seen corresponding path program 1 times [2024-11-16 04:20:09,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:09,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047882126] [2024-11-16 04:20:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:09,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 910 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-16 04:20:09,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:09,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047882126] [2024-11-16 04:20:09,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047882126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:09,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:09,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:20:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567871710] [2024-11-16 04:20:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:09,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:20:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:20:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:09,917 INFO L87 Difference]: Start difference. First operand 85407 states and 91819 transitions. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:11,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:11,411 INFO L93 Difference]: Finished difference Result 178074 states and 191515 transitions. [2024-11-16 04:20:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:20:11,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 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 850 [2024-11-16 04:20:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:11,514 INFO L225 Difference]: With dead ends: 178074 [2024-11-16 04:20:11,514 INFO L226 Difference]: Without dead ends: 92669 [2024-11-16 04:20:11,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:11,575 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 372 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:11,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 268 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:20:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92669 states. [2024-11-16 04:20:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92669 to 92237. [2024-11-16 04:20:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92237 states, 92236 states have (on average 1.0710568541567285) internal successors, (98790), 92236 states have internal predecessors, (98790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:12,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92237 states to 92237 states and 98790 transitions. [2024-11-16 04:20:12,758 INFO L78 Accepts]: Start accepts. Automaton has 92237 states and 98790 transitions. Word has length 850 [2024-11-16 04:20:12,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:12,759 INFO L471 AbstractCegarLoop]: Abstraction has 92237 states and 98790 transitions. [2024-11-16 04:20:12,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 92237 states and 98790 transitions. [2024-11-16 04:20:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2024-11-16 04:20:12,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:12,795 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:12,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 04:20:12,795 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:12,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2055808672, now seen corresponding path program 1 times [2024-11-16 04:20:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758952756] [2024-11-16 04:20:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 784 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-16 04:20:14,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758952756] [2024-11-16 04:20:14,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758952756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:14,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:14,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:20:14,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366697599] [2024-11-16 04:20:14,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:14,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:20:14,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:14,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:20:14,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:14,263 INFO L87 Difference]: Start difference. First operand 92237 states and 98790 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:15,719 INFO L93 Difference]: Finished difference Result 184475 states and 197583 transitions. [2024-11-16 04:20:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:20:15,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 852 [2024-11-16 04:20:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:15,810 INFO L225 Difference]: With dead ends: 184475 [2024-11-16 04:20:15,810 INFO L226 Difference]: Without dead ends: 92240 [2024-11-16 04:20:15,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:15,866 INFO L432 NwaCegarLoop]: 707 mSDtfsCounter, 113 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:15,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 751 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:20:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92240 states. [2024-11-16 04:20:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92240 to 91811. [2024-11-16 04:20:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91811 states, 91810 states have (on average 1.0707330356170353) internal successors, (98304), 91810 states have internal predecessors, (98304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91811 states to 91811 states and 98304 transitions. [2024-11-16 04:20:17,215 INFO L78 Accepts]: Start accepts. Automaton has 91811 states and 98304 transitions. Word has length 852 [2024-11-16 04:20:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:17,215 INFO L471 AbstractCegarLoop]: Abstraction has 91811 states and 98304 transitions. [2024-11-16 04:20:17,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 91811 states and 98304 transitions. [2024-11-16 04:20:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2024-11-16 04:20:17,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:17,251 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:17,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 04:20:17,252 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:17,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash -400720387, now seen corresponding path program 1 times [2024-11-16 04:20:17,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:17,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79072964] [2024-11-16 04:20:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-16 04:20:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:18,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79072964] [2024-11-16 04:20:18,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79072964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:18,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:18,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:20:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56208192] [2024-11-16 04:20:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:18,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:20:18,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:20:18,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:20:18,261 INFO L87 Difference]: Start difference. First operand 91811 states and 98304 transitions. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:21,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:20:21,167 INFO L93 Difference]: Finished difference Result 207111 states and 220993 transitions. [2024-11-16 04:20:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:20:21,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 886 [2024-11-16 04:20:21,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:20:21,294 INFO L225 Difference]: With dead ends: 207111 [2024-11-16 04:20:21,294 INFO L226 Difference]: Without dead ends: 114876 [2024-11-16 04:20:21,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:20:21,344 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 591 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:20:21,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 122 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:20:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114876 states. [2024-11-16 04:20:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114876 to 107588. [2024-11-16 04:20:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107588 states, 107587 states have (on average 1.0642085010270759) internal successors, (114495), 107587 states have internal predecessors, (114495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107588 states to 107588 states and 114495 transitions. [2024-11-16 04:20:22,627 INFO L78 Accepts]: Start accepts. Automaton has 107588 states and 114495 transitions. Word has length 886 [2024-11-16 04:20:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:22,628 INFO L471 AbstractCegarLoop]: Abstraction has 107588 states and 114495 transitions. [2024-11-16 04:20:22,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 107588 states and 114495 transitions. [2024-11-16 04:20:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2024-11-16 04:20:22,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:22,675 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:22,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 04:20:22,675 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:22,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash 772196812, now seen corresponding path program 1 times [2024-11-16 04:20:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592515536] [2024-11-16 04:20:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:20:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2024-11-16 04:20:23,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:20:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592515536] [2024-11-16 04:20:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592515536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:20:23,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:20:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:20:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852008838] [2024-11-16 04:20:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:20:23,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:20:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:20:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:20:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:20:23,721 INFO L87 Difference]: Start difference. First operand 107588 states and 114495 transitions. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)