./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem04_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/Problem04_label25.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 50009d3cee115e6c946845c8dea73b682d6ca1c8ac2b72eafcca7237d27aa86d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 14:14:45,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 14:14:45,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 14:14:45,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 14:14:45,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 14:14:45,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 14:14:45,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 14:14:45,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 14:14:45,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 14:14:45,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 14:14:45,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 14:14:45,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 14:14:45,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 14:14:45,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 14:14:45,228 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 14:14:45,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:14:45,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 14:14:45,229 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 50009d3cee115e6c946845c8dea73b682d6ca1c8ac2b72eafcca7237d27aa86d [2025-03-16 14:14:45,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 14:14:45,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 14:14:45,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 14:14:45,447 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 14:14:45,447 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 14:14:45,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label25.c [2025-03-16 14:14:46,541 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0cbf756/c40d3f03886d48bd98c992b6e156b043/FLAG3fea56bae [2025-03-16 14:14:46,926 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 14:14:46,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label25.c [2025-03-16 14:14:46,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0cbf756/c40d3f03886d48bd98c992b6e156b043/FLAG3fea56bae [2025-03-16 14:14:46,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0cbf756/c40d3f03886d48bd98c992b6e156b043 [2025-03-16 14:14:46,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 14:14:46,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 14:14:46,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 14:14:46,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 14:14:46,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 14:14:46,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:14:46" (1/1) ... [2025-03-16 14:14:46,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448bd6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:46, skipping insertion in model container [2025-03-16 14:14:46,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:14:46" (1/1) ... [2025-03-16 14:14:47,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 14:14:47,624 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/Problem04_label25.c[181963,181976] [2025-03-16 14:14:47,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:14:47,650 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 14:14:47,916 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/Problem04_label25.c[181963,181976] [2025-03-16 14:14:47,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:14:47,938 INFO L204 MainTranslator]: Completed translation [2025-03-16 14:14:47,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47 WrapperNode [2025-03-16 14:14:47,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 14:14:47,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 14:14:47,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 14:14:47,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 14:14:47,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:47,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,132 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5573 [2025-03-16 14:14:48,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 14:14:48,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 14:14:48,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 14:14:48,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 14:14:48,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,219 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]. [2025-03-16 14:14:48,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,314 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,408 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 14:14:48,414 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 14:14:48,414 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 14:14:48,414 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 14:14:48,415 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (1/1) ... [2025-03-16 14:14:48,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:14:48,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:14:48,453 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) [2025-03-16 14:14:48,499 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 [2025-03-16 14:14:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 14:14:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 14:14:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 14:14:48,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 14:14:48,573 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 14:14:48,575 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 14:14:51,722 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4081: havoc calculate_output3_#t~ret11#1; [2025-03-16 14:14:51,726 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1382: havoc calculate_output_#t~ret9#1; [2025-03-16 14:14:51,726 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2719: havoc calculate_output2_#t~ret10#1; [2025-03-16 14:14:51,825 INFO L? ?]: Removed 768 outVars from TransFormulas that were not future-live. [2025-03-16 14:14:51,825 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 14:14:51,854 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 14:14:51,859 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 14:14:51,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:14:51 BoogieIcfgContainer [2025-03-16 14:14:51,860 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 14:14:51,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 14:14:51,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 14:14:51,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 14:14:51,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 02:14:46" (1/3) ... [2025-03-16 14:14:51,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b74b06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:14:51, skipping insertion in model container [2025-03-16 14:14:51,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:14:47" (2/3) ... [2025-03-16 14:14:51,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b74b06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:14:51, skipping insertion in model container [2025-03-16 14:14:51,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:14:51" (3/3) ... [2025-03-16 14:14:51,868 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem04_label25.c [2025-03-16 14:14:51,878 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 14:14:51,880 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem04_label25.c that has 1 procedures, 824 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 14:14:51,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 14:14:51,951 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;@2f2499be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 14:14:51,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 14:14:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 824 states, 822 states have (on average 1.9902676399026764) internal successors, (1636), 823 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:14:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2025-03-16 14:14:51,984 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:14:51,985 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:14:51,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:14:51,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:14:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash -165174136, now seen corresponding path program 1 times [2025-03-16 14:14:51,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:14:51,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519945605] [2025-03-16 14:14:51,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:14:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:14:52,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 796 statements into 1 equivalence classes. [2025-03-16 14:14:52,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 796 of 796 statements. [2025-03-16 14:14:52,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:14:52,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:14:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:14:52,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:14:52,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519945605] [2025-03-16 14:14:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519945605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:14:52,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:14:52,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:14:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865992114] [2025-03-16 14:14:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:14:52,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 14:14:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:14:52,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 14:14:52,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 14:14:52,973 INFO L87 Difference]: Start difference. First operand has 824 states, 822 states have (on average 1.9902676399026764) internal successors, (1636), 823 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 398.0) internal successors, (796), 2 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:14:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:14:53,053 INFO L93 Difference]: Finished difference Result 1647 states and 3271 transitions. [2025-03-16 14:14:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 14:14:53,055 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 398.0) internal successors, (796), 2 states have internal predecessors, (796), 0 states have call successors, (0), 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 796 [2025-03-16 14:14:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:14:53,070 INFO L225 Difference]: With dead ends: 1647 [2025-03-16 14:14:53,073 INFO L226 Difference]: Without dead ends: 821 [2025-03-16 14:14:53,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 14:14:53,081 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:14:53,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:14:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2025-03-16 14:14:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2025-03-16 14:14:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 1.9158536585365853) internal successors, (1571), 820 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:14:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1571 transitions. [2025-03-16 14:14:53,154 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1571 transitions. Word has length 796 [2025-03-16 14:14:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:14:53,157 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1571 transitions. [2025-03-16 14:14:53,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 398.0) internal successors, (796), 2 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:14:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1571 transitions. [2025-03-16 14:14:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2025-03-16 14:14:53,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:14:53,206 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:14:53,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 14:14:53,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:14:53,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:14:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash -833452156, now seen corresponding path program 1 times [2025-03-16 14:14:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:14:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136410625] [2025-03-16 14:14:53,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:14:53,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:14:53,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 796 statements into 1 equivalence classes. [2025-03-16 14:14:53,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 796 of 796 statements. [2025-03-16 14:14:53,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:14:53,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:14:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:14:54,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:14:54,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136410625] [2025-03-16 14:14:54,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136410625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:14:54,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:14:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:14:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349389042] [2025-03-16 14:14:54,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:14:54,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:14:54,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:14:54,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:14:54,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:14:54,417 INFO L87 Difference]: Start difference. First operand 821 states and 1571 transitions. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 2 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:14:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:14:57,080 INFO L93 Difference]: Finished difference Result 2459 states and 4710 transitions. [2025-03-16 14:14:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:14:57,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 2 states have internal predecessors, (796), 0 states have call successors, (0), 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 796 [2025-03-16 14:14:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:14:57,090 INFO L225 Difference]: With dead ends: 2459 [2025-03-16 14:14:57,091 INFO L226 Difference]: Without dead ends: 1639 [2025-03-16 14:14:57,092 INFO L434 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 [2025-03-16 14:14:57,092 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 95 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 1298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1298 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-16 14:14:57,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 90 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1298 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-16 14:14:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2025-03-16 14:14:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2025-03-16 14:14:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 1.8724053724053724) internal successors, (3067), 1638 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:14:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 3067 transitions. [2025-03-16 14:14:57,135 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 3067 transitions. Word has length 796 [2025-03-16 14:14:57,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:14:57,136 INFO L471 AbstractCegarLoop]: Abstraction has 1639 states and 3067 transitions. [2025-03-16 14:14:57,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 2 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:14:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 3067 transitions. [2025-03-16 14:14:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2025-03-16 14:14:57,148 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:14:57,149 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:14:57,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 14:14:57,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:14:57,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:14:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1236418832, now seen corresponding path program 1 times [2025-03-16 14:14:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:14:57,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065467818] [2025-03-16 14:14:57,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:14:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:14:57,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 801 statements into 1 equivalence classes. [2025-03-16 14:14:57,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 801 of 801 statements. [2025-03-16 14:14:57,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:14:57,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:14:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:14:57,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:14:57,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065467818] [2025-03-16 14:14:57,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065467818] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:14:57,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:14:57,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:14:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54390440] [2025-03-16 14:14:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:14:57,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:14:57,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:14:57,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:14:57,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:14:57,659 INFO L87 Difference]: Start difference. First operand 1639 states and 3067 transitions. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 2 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:00,210 INFO L93 Difference]: Finished difference Result 4913 states and 9198 transitions. [2025-03-16 14:15:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 2 states have internal predecessors, (801), 0 states have call successors, (0), 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 801 [2025-03-16 14:15:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:00,221 INFO L225 Difference]: With dead ends: 4913 [2025-03-16 14:15:00,221 INFO L226 Difference]: Without dead ends: 3275 [2025-03-16 14:15:00,223 INFO L434 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 [2025-03-16 14:15:00,224 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 1016 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:00,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 474 Invalid, 3157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 14:15:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2025-03-16 14:15:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3275. [2025-03-16 14:15:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 1.6014050091631031) internal successors, (5243), 3274 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5243 transitions. [2025-03-16 14:15:00,269 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5243 transitions. Word has length 801 [2025-03-16 14:15:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:00,269 INFO L471 AbstractCegarLoop]: Abstraction has 3275 states and 5243 transitions. [2025-03-16 14:15:00,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 2 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5243 transitions. [2025-03-16 14:15:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2025-03-16 14:15:00,277 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:00,278 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:00,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 14:15:00,278 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:00,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash 701751722, now seen corresponding path program 1 times [2025-03-16 14:15:00,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:00,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831056682] [2025-03-16 14:15:00,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:00,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 846 statements into 1 equivalence classes. [2025-03-16 14:15:00,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 846 of 846 statements. [2025-03-16 14:15:00,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:00,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-16 14:15:00,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:00,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831056682] [2025-03-16 14:15:00,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831056682] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:00,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:00,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:00,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304712570] [2025-03-16 14:15:00,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:00,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:00,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:00,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:00,615 INFO L87 Difference]: Start difference. First operand 3275 states and 5243 transitions. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:02,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:02,782 INFO L93 Difference]: Finished difference Result 9821 states and 15726 transitions. [2025-03-16 14:15:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:02,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 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 846 [2025-03-16 14:15:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:02,798 INFO L225 Difference]: With dead ends: 9821 [2025-03-16 14:15:02,798 INFO L226 Difference]: Without dead ends: 6547 [2025-03-16 14:15:02,802 INFO L434 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 [2025-03-16 14:15:02,802 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 948 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:02,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 283 Invalid, 3389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 14:15:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6547 states. [2025-03-16 14:15:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6547 to 6547. [2025-03-16 14:15:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 1.5108463183623586) internal successors, (9890), 6546 states have internal predecessors, (9890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 9890 transitions. [2025-03-16 14:15:02,886 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 9890 transitions. Word has length 846 [2025-03-16 14:15:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:02,887 INFO L471 AbstractCegarLoop]: Abstraction has 6547 states and 9890 transitions. [2025-03-16 14:15:02,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 9890 transitions. [2025-03-16 14:15:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2025-03-16 14:15:02,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:02,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:02,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 14:15:02,900 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:02,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:02,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1438705411, now seen corresponding path program 1 times [2025-03-16 14:15:02,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:02,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418678307] [2025-03-16 14:15:02,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:02,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:02,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 872 statements into 1 equivalence classes. [2025-03-16 14:15:03,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 872 of 872 statements. [2025-03-16 14:15:03,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:03,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:15:03,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:03,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418678307] [2025-03-16 14:15:03,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418678307] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:03,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:03,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:03,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291784101] [2025-03-16 14:15:03,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:03,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:03,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:03,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:03,311 INFO L87 Difference]: Start difference. First operand 6547 states and 9890 transitions. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 2 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:05,403 INFO L93 Difference]: Finished difference Result 19637 states and 29667 transitions. [2025-03-16 14:15:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:05,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 2 states have internal predecessors, (872), 0 states have call successors, (0), 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 872 [2025-03-16 14:15:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:05,434 INFO L225 Difference]: With dead ends: 19637 [2025-03-16 14:15:05,434 INFO L226 Difference]: Without dead ends: 13091 [2025-03-16 14:15:05,442 INFO L434 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 [2025-03-16 14:15:05,443 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 926 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:05,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 197 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1177 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 14:15:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13091 states. [2025-03-16 14:15:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13091 to 13091. [2025-03-16 14:15:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13091 states, 13090 states have (on average 1.453170359052712) internal successors, (19022), 13090 states have internal predecessors, (19022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13091 states to 13091 states and 19022 transitions. [2025-03-16 14:15:05,660 INFO L78 Accepts]: Start accepts. Automaton has 13091 states and 19022 transitions. Word has length 872 [2025-03-16 14:15:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:05,660 INFO L471 AbstractCegarLoop]: Abstraction has 13091 states and 19022 transitions. [2025-03-16 14:15:05,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 2 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13091 states and 19022 transitions. [2025-03-16 14:15:05,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2025-03-16 14:15:05,681 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:05,682 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:05,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 14:15:05,682 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:05,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1919686786, now seen corresponding path program 1 times [2025-03-16 14:15:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:05,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429072637] [2025-03-16 14:15:05,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:05,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 887 statements into 1 equivalence classes. [2025-03-16 14:15:05,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 887 of 887 statements. [2025-03-16 14:15:05,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:05,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 14:15:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429072637] [2025-03-16 14:15:05,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429072637] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:05,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:05,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:05,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703651045] [2025-03-16 14:15:05,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:05,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:05,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:05,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:05,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:05,996 INFO L87 Difference]: Start difference. First operand 13091 states and 19022 transitions. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 2 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:08,155 INFO L93 Difference]: Finished difference Result 39269 states and 57063 transitions. [2025-03-16 14:15:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:08,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 2 states have internal predecessors, (874), 0 states have call successors, (0), 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 887 [2025-03-16 14:15:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:08,207 INFO L225 Difference]: With dead ends: 39269 [2025-03-16 14:15:08,207 INFO L226 Difference]: Without dead ends: 26179 [2025-03-16 14:15:08,221 INFO L434 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 [2025-03-16 14:15:08,222 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 944 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:08,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 551 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 14:15:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26179 states. [2025-03-16 14:15:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26179 to 26179. [2025-03-16 14:15:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26179 states, 26178 states have (on average 1.3198105279242112) internal successors, (34550), 26178 states have internal predecessors, (34550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26179 states to 26179 states and 34550 transitions. [2025-03-16 14:15:08,534 INFO L78 Accepts]: Start accepts. Automaton has 26179 states and 34550 transitions. Word has length 887 [2025-03-16 14:15:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:08,535 INFO L471 AbstractCegarLoop]: Abstraction has 26179 states and 34550 transitions. [2025-03-16 14:15:08,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 2 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 26179 states and 34550 transitions. [2025-03-16 14:15:08,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2025-03-16 14:15:08,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:08,570 INFO L218 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:08,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 14:15:08,571 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:08,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:08,572 INFO L85 PathProgramCache]: Analyzing trace with hash 644330614, now seen corresponding path program 1 times [2025-03-16 14:15:08,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:08,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050429534] [2025-03-16 14:15:08,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:08,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:08,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 983 statements into 1 equivalence classes. [2025-03-16 14:15:08,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 983 of 983 statements. [2025-03-16 14:15:08,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:08,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-03-16 14:15:09,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050429534] [2025-03-16 14:15:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050429534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:09,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:09,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429499255] [2025-03-16 14:15:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:09,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:09,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:09,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:09,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:09,015 INFO L87 Difference]: Start difference. First operand 26179 states and 34550 transitions. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 2 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:11,218 INFO L93 Difference]: Finished difference Result 74443 states and 98189 transitions. [2025-03-16 14:15:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 2 states have internal predecessors, (843), 0 states have call successors, (0), 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 983 [2025-03-16 14:15:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:11,302 INFO L225 Difference]: With dead ends: 74443 [2025-03-16 14:15:11,302 INFO L226 Difference]: Without dead ends: 48265 [2025-03-16 14:15:11,325 INFO L434 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 [2025-03-16 14:15:11,326 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 989 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 1170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1170 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:11,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 310 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1170 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 14:15:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48265 states. [2025-03-16 14:15:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48265 to 44175. [2025-03-16 14:15:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44175 states, 44174 states have (on average 1.260039842441255) internal successors, (55661), 44174 states have internal predecessors, (55661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44175 states to 44175 states and 55661 transitions. [2025-03-16 14:15:11,972 INFO L78 Accepts]: Start accepts. Automaton has 44175 states and 55661 transitions. Word has length 983 [2025-03-16 14:15:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:11,972 INFO L471 AbstractCegarLoop]: Abstraction has 44175 states and 55661 transitions. [2025-03-16 14:15:11,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 2 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 44175 states and 55661 transitions. [2025-03-16 14:15:12,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2025-03-16 14:15:12,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:12,096 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:12,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 14:15:12,097 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:12,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash -45680250, now seen corresponding path program 1 times [2025-03-16 14:15:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:12,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548111617] [2025-03-16 14:15:12,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:12,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:12,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1111 statements into 1 equivalence classes. [2025-03-16 14:15:12,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1111 of 1111 statements. [2025-03-16 14:15:12,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:12,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2025-03-16 14:15:12,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:12,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548111617] [2025-03-16 14:15:12,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548111617] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:12,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:12,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:15:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097834857] [2025-03-16 14:15:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:12,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:12,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:12,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:12,758 INFO L87 Difference]: Start difference. First operand 44175 states and 55661 transitions. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:15,085 INFO L93 Difference]: Finished difference Result 109617 states and 137641 transitions. [2025-03-16 14:15:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 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 1111 [2025-03-16 14:15:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:15,178 INFO L225 Difference]: With dead ends: 109617 [2025-03-16 14:15:15,178 INFO L226 Difference]: Without dead ends: 65443 [2025-03-16 14:15:15,210 INFO L434 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 [2025-03-16 14:15:15,210 INFO L435 NwaCegarLoop]: 1455 mSDtfsCounter, 763 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:15,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1463 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 14:15:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65443 states. [2025-03-16 14:15:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65443 to 63807. [2025-03-16 14:15:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63807 states, 63806 states have (on average 1.2421872551170736) internal successors, (79259), 63806 states have internal predecessors, (79259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63807 states to 63807 states and 79259 transitions. [2025-03-16 14:15:15,930 INFO L78 Accepts]: Start accepts. Automaton has 63807 states and 79259 transitions. Word has length 1111 [2025-03-16 14:15:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:15,931 INFO L471 AbstractCegarLoop]: Abstraction has 63807 states and 79259 transitions. [2025-03-16 14:15:15,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 63807 states and 79259 transitions. [2025-03-16 14:15:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2025-03-16 14:15:16,131 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:16,132 INFO L218 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:16,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 14:15:16,132 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:16,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash -855177138, now seen corresponding path program 1 times [2025-03-16 14:15:16,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:16,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617808366] [2025-03-16 14:15:16,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:16,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:16,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1129 statements into 1 equivalence classes. [2025-03-16 14:15:16,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1129 of 1129 statements. [2025-03-16 14:15:16,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:16,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-03-16 14:15:17,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617808366] [2025-03-16 14:15:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617808366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:17,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:17,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:15:17,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114472785] [2025-03-16 14:15:17,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:17,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:17,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:17,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:17,229 INFO L87 Difference]: Start difference. First operand 63807 states and 79259 transitions. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:19,090 INFO L93 Difference]: Finished difference Result 129249 states and 160219 transitions. [2025-03-16 14:15:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:19,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 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 1129 [2025-03-16 14:15:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:19,163 INFO L225 Difference]: With dead ends: 129249 [2025-03-16 14:15:19,163 INFO L226 Difference]: Without dead ends: 65443 [2025-03-16 14:15:19,198 INFO L434 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 [2025-03-16 14:15:19,201 INFO L435 NwaCegarLoop]: 648 mSDtfsCounter, 822 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:19,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 656 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 14:15:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65443 states. [2025-03-16 14:15:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65443 to 65443. [2025-03-16 14:15:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65443 states, 65442 states have (on average 1.2329238103969928) internal successors, (80685), 65442 states have internal predecessors, (80685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65443 states to 65443 states and 80685 transitions. [2025-03-16 14:15:19,946 INFO L78 Accepts]: Start accepts. Automaton has 65443 states and 80685 transitions. Word has length 1129 [2025-03-16 14:15:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:19,946 INFO L471 AbstractCegarLoop]: Abstraction has 65443 states and 80685 transitions. [2025-03-16 14:15:19,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 65443 states and 80685 transitions. [2025-03-16 14:15:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2025-03-16 14:15:19,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:19,988 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:19,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 14:15:19,988 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:19,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1023029076, now seen corresponding path program 1 times [2025-03-16 14:15:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157670317] [2025-03-16 14:15:19,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:20,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1149 statements into 1 equivalence classes. [2025-03-16 14:15:20,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1149 of 1149 statements. [2025-03-16 14:15:20,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:20,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2025-03-16 14:15:21,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:21,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157670317] [2025-03-16 14:15:21,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157670317] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:21,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:21,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958658563] [2025-03-16 14:15:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:21,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:21,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:21,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:21,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:21,139 INFO L87 Difference]: Start difference. First operand 65443 states and 80685 transitions. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 2 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:23,138 INFO L93 Difference]: Finished difference Result 134975 states and 165784 transitions. [2025-03-16 14:15:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:23,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 2 states have internal predecessors, (919), 0 states have call successors, (0), 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 1149 [2025-03-16 14:15:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:23,215 INFO L225 Difference]: With dead ends: 134975 [2025-03-16 14:15:23,216 INFO L226 Difference]: Without dead ends: 69533 [2025-03-16 14:15:23,254 INFO L434 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 [2025-03-16 14:15:23,254 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 736 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:23,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 499 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 14:15:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69533 states. [2025-03-16 14:15:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69533 to 69533. [2025-03-16 14:15:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69533 states, 69532 states have (on average 1.2169936144509004) internal successors, (84620), 69532 states have internal predecessors, (84620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:24,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69533 states to 69533 states and 84620 transitions. [2025-03-16 14:15:24,091 INFO L78 Accepts]: Start accepts. Automaton has 69533 states and 84620 transitions. Word has length 1149 [2025-03-16 14:15:24,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:24,091 INFO L471 AbstractCegarLoop]: Abstraction has 69533 states and 84620 transitions. [2025-03-16 14:15:24,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 2 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 69533 states and 84620 transitions. [2025-03-16 14:15:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2025-03-16 14:15:24,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:24,144 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:24,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 14:15:24,144 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:24,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1984874055, now seen corresponding path program 1 times [2025-03-16 14:15:24,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:24,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298171221] [2025-03-16 14:15:24,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:24,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1164 statements into 1 equivalence classes. [2025-03-16 14:15:24,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1164 of 1164 statements. [2025-03-16 14:15:24,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:24,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2025-03-16 14:15:24,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298171221] [2025-03-16 14:15:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298171221] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:24,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:24,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:15:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410726685] [2025-03-16 14:15:24,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:24,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:24,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:24,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:24,730 INFO L87 Difference]: Start difference. First operand 69533 states and 84620 transitions. Second operand has 3 states, 3 states have (on average 341.3333333333333) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:26,939 INFO L93 Difference]: Finished difference Result 157879 states and 192998 transitions. [2025-03-16 14:15:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:26,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 341.3333333333333) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 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 1164 [2025-03-16 14:15:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:27,043 INFO L225 Difference]: With dead ends: 157879 [2025-03-16 14:15:27,043 INFO L226 Difference]: Without dead ends: 88347 [2025-03-16 14:15:27,091 INFO L434 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 [2025-03-16 14:15:27,091 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 926 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:27,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 365 Invalid, 3253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:15:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88347 states. [2025-03-16 14:15:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88347 to 88347. [2025-03-16 14:15:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88347 states, 88346 states have (on average 1.1940212346908745) internal successors, (105487), 88346 states have internal predecessors, (105487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88347 states to 88347 states and 105487 transitions. [2025-03-16 14:15:27,896 INFO L78 Accepts]: Start accepts. Automaton has 88347 states and 105487 transitions. Word has length 1164 [2025-03-16 14:15:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:27,897 INFO L471 AbstractCegarLoop]: Abstraction has 88347 states and 105487 transitions. [2025-03-16 14:15:27,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.3333333333333) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 88347 states and 105487 transitions. [2025-03-16 14:15:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1238 [2025-03-16 14:15:27,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:27,944 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:27,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 14:15:27,944 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:27,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:27,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1619006775, now seen corresponding path program 1 times [2025-03-16 14:15:27,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:27,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949850017] [2025-03-16 14:15:27,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:27,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:28,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1237 statements into 1 equivalence classes. [2025-03-16 14:15:28,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1237 of 1237 statements. [2025-03-16 14:15:28,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:28,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2025-03-16 14:15:29,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:29,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949850017] [2025-03-16 14:15:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949850017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:29,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:29,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:29,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803095082] [2025-03-16 14:15:29,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:29,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:29,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:29,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:29,117 INFO L87 Difference]: Start difference. First operand 88347 states and 105487 transitions. Second operand has 3 states, 3 states have (on average 341.0) internal successors, (1023), 2 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:31,386 INFO L93 Difference]: Finished difference Result 177511 states and 211815 transitions. [2025-03-16 14:15:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:31,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 341.0) internal successors, (1023), 2 states have internal predecessors, (1023), 0 states have call successors, (0), 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 1237 [2025-03-16 14:15:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:31,519 INFO L225 Difference]: With dead ends: 177511 [2025-03-16 14:15:31,519 INFO L226 Difference]: Without dead ends: 89165 [2025-03-16 14:15:31,581 INFO L434 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 [2025-03-16 14:15:31,582 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 602 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:31,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 632 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 14:15:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89165 states. [2025-03-16 14:15:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89165 to 89165. [2025-03-16 14:15:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89165 states, 89164 states have (on average 1.1835606298506123) internal successors, (105531), 89164 states have internal predecessors, (105531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89165 states to 89165 states and 105531 transitions. [2025-03-16 14:15:32,621 INFO L78 Accepts]: Start accepts. Automaton has 89165 states and 105531 transitions. Word has length 1237 [2025-03-16 14:15:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:32,622 INFO L471 AbstractCegarLoop]: Abstraction has 89165 states and 105531 transitions. [2025-03-16 14:15:32,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.0) internal successors, (1023), 2 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:32,622 INFO L276 IsEmpty]: Start isEmpty. Operand 89165 states and 105531 transitions. [2025-03-16 14:15:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1242 [2025-03-16 14:15:32,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:32,678 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:32,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 14:15:32,679 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:32,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash -850528330, now seen corresponding path program 1 times [2025-03-16 14:15:32,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:32,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2808266] [2025-03-16 14:15:32,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:32,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:32,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1241 statements into 1 equivalence classes. [2025-03-16 14:15:32,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1241 of 1241 statements. [2025-03-16 14:15:32,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:32,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2025-03-16 14:15:33,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:33,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2808266] [2025-03-16 14:15:33,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2808266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:33,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:33,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:15:33,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170157063] [2025-03-16 14:15:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:33,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:33,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:33,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:33,368 INFO L87 Difference]: Start difference. First operand 89165 states and 105531 transitions. Second operand has 3 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:35,402 INFO L93 Difference]: Finished difference Result 178329 states and 211061 transitions. [2025-03-16 14:15:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 0 states have call successors, (0), 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 1241 [2025-03-16 14:15:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:35,508 INFO L225 Difference]: With dead ends: 178329 [2025-03-16 14:15:35,508 INFO L226 Difference]: Without dead ends: 89165 [2025-03-16 14:15:35,566 INFO L434 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 [2025-03-16 14:15:35,567 INFO L435 NwaCegarLoop]: 1126 mSDtfsCounter, 663 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:35,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1134 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 14:15:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89165 states. [2025-03-16 14:15:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89165 to 82621. [2025-03-16 14:15:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82621 states, 82620 states have (on average 1.1673323650447833) internal successors, (96445), 82620 states have internal predecessors, (96445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82621 states to 82621 states and 96445 transitions. [2025-03-16 14:15:36,539 INFO L78 Accepts]: Start accepts. Automaton has 82621 states and 96445 transitions. Word has length 1241 [2025-03-16 14:15:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:36,539 INFO L471 AbstractCegarLoop]: Abstraction has 82621 states and 96445 transitions. [2025-03-16 14:15:36,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 82621 states and 96445 transitions. [2025-03-16 14:15:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1260 [2025-03-16 14:15:36,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:36,575 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:36,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 14:15:36,575 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:36,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1947532677, now seen corresponding path program 1 times [2025-03-16 14:15:36,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:36,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447423716] [2025-03-16 14:15:36,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:36,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:36,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1259 statements into 1 equivalence classes. [2025-03-16 14:15:36,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1259 of 1259 statements. [2025-03-16 14:15:36,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:36,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2025-03-16 14:15:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447423716] [2025-03-16 14:15:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447423716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:37,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:15:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936563074] [2025-03-16 14:15:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:37,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:37,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:37,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:37,363 INFO L87 Difference]: Start difference. First operand 82621 states and 96445 transitions. Second operand has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:39,698 INFO L93 Difference]: Finished difference Result 165241 states and 192889 transitions. [2025-03-16 14:15:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:39,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 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 1259 [2025-03-16 14:15:39,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:39,794 INFO L225 Difference]: With dead ends: 165241 [2025-03-16 14:15:39,795 INFO L226 Difference]: Without dead ends: 82621 [2025-03-16 14:15:39,847 INFO L434 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 [2025-03-16 14:15:39,848 INFO L435 NwaCegarLoop]: 1356 mSDtfsCounter, 54 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:39,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1364 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:15:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82621 states. [2025-03-16 14:15:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82621 to 79349. [2025-03-16 14:15:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79349 states, 79348 states have (on average 1.1268336946110804) internal successors, (89412), 79348 states have internal predecessors, (89412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79349 states to 79349 states and 89412 transitions. [2025-03-16 14:15:40,743 INFO L78 Accepts]: Start accepts. Automaton has 79349 states and 89412 transitions. Word has length 1259 [2025-03-16 14:15:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:40,744 INFO L471 AbstractCegarLoop]: Abstraction has 79349 states and 89412 transitions. [2025-03-16 14:15:40,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 79349 states and 89412 transitions. [2025-03-16 14:15:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2025-03-16 14:15:40,791 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:40,792 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-16 14:15:40,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 14:15:40,792 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:40,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1870904578, now seen corresponding path program 1 times [2025-03-16 14:15:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:40,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014965227] [2025-03-16 14:15:40,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:40,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1410 statements into 1 equivalence classes. [2025-03-16 14:15:40,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1410 of 1410 statements. [2025-03-16 14:15:40,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:40,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 611 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:15:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014965227] [2025-03-16 14:15:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014965227] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313062691] [2025-03-16 14:15:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:41,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:41,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:41,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:41,862 INFO L87 Difference]: Start difference. First operand 79349 states and 89412 transitions. Second operand has 3 states, 3 states have (on average 470.0) internal successors, (1410), 2 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:43,706 INFO L93 Difference]: Finished difference Result 158697 states and 178823 transitions. [2025-03-16 14:15:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:43,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 470.0) internal successors, (1410), 2 states have internal predecessors, (1410), 0 states have call successors, (0), 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 1410 [2025-03-16 14:15:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:43,793 INFO L225 Difference]: With dead ends: 158697 [2025-03-16 14:15:43,793 INFO L226 Difference]: Without dead ends: 79349 [2025-03-16 14:15:43,842 INFO L434 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 [2025-03-16 14:15:43,843 INFO L435 NwaCegarLoop]: 654 mSDtfsCounter, 270 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:43,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 661 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 14:15:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79349 states. [2025-03-16 14:15:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79349 to 79349. [2025-03-16 14:15:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79349 states, 79348 states have (on average 1.12479205525029) internal successors, (89250), 79348 states have internal predecessors, (89250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79349 states to 79349 states and 89250 transitions. [2025-03-16 14:15:45,028 INFO L78 Accepts]: Start accepts. Automaton has 79349 states and 89250 transitions. Word has length 1410 [2025-03-16 14:15:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:45,028 INFO L471 AbstractCegarLoop]: Abstraction has 79349 states and 89250 transitions. [2025-03-16 14:15:45,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 470.0) internal successors, (1410), 2 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 79349 states and 89250 transitions. [2025-03-16 14:15:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1433 [2025-03-16 14:15:45,076 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:45,077 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-16 14:15:45,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 14:15:45,077 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:45,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1873028236, now seen corresponding path program 1 times [2025-03-16 14:15:45,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:45,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787346855] [2025-03-16 14:15:45,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:45,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:45,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1432 statements into 1 equivalence classes. [2025-03-16 14:15:45,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1432 of 1432 statements. [2025-03-16 14:15:45,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:45,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:15:46,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:46,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787346855] [2025-03-16 14:15:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787346855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:46,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:15:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951728645] [2025-03-16 14:15:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:46,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:15:46,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:46,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:15:46,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:15:46,279 INFO L87 Difference]: Start difference. First operand 79349 states and 89250 transitions. Second operand has 4 states, 4 states have (on average 358.0) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:49,134 INFO L93 Difference]: Finished difference Result 165241 states and 185391 transitions. [2025-03-16 14:15:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:15:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 358.0) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 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 1432 [2025-03-16 14:15:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:49,228 INFO L225 Difference]: With dead ends: 165241 [2025-03-16 14:15:49,228 INFO L226 Difference]: Without dead ends: 85893 [2025-03-16 14:15:49,274 INFO L434 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 [2025-03-16 14:15:49,275 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 1060 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 4927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:49,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 497 Invalid, 4927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4076 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 14:15:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85893 states. [2025-03-16 14:15:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85893 to 84257. [2025-03-16 14:15:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84257 states, 84256 states have (on average 1.1200864033421951) internal successors, (94374), 84256 states have internal predecessors, (94374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84257 states to 84257 states and 94374 transitions. [2025-03-16 14:15:50,219 INFO L78 Accepts]: Start accepts. Automaton has 84257 states and 94374 transitions. Word has length 1432 [2025-03-16 14:15:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:50,220 INFO L471 AbstractCegarLoop]: Abstraction has 84257 states and 94374 transitions. [2025-03-16 14:15:50,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 358.0) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 84257 states and 94374 transitions. [2025-03-16 14:15:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1436 [2025-03-16 14:15:50,264 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:50,265 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:50,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 14:15:50,265 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:50,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1475923313, now seen corresponding path program 1 times [2025-03-16 14:15:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:50,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703267487] [2025-03-16 14:15:50,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:50,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:50,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1435 statements into 1 equivalence classes. [2025-03-16 14:15:50,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1435 of 1435 statements. [2025-03-16 14:15:50,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:50,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2025-03-16 14:15:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703267487] [2025-03-16 14:15:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703267487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:51,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:51,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:15:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066322205] [2025-03-16 14:15:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:51,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:15:51,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:51,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:15:51,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:15:51,452 INFO L87 Difference]: Start difference. First operand 84257 states and 94374 transitions. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 2 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:15:53,706 INFO L93 Difference]: Finished difference Result 170149 states and 190455 transitions. [2025-03-16 14:15:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:15:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 2 states have internal predecessors, (1124), 0 states have call successors, (0), 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 1435 [2025-03-16 14:15:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:15:53,799 INFO L225 Difference]: With dead ends: 170149 [2025-03-16 14:15:53,799 INFO L226 Difference]: Without dead ends: 85893 [2025-03-16 14:15:53,829 INFO L434 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 [2025-03-16 14:15:53,829 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 507 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:15:53,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 506 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:15:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85893 states. [2025-03-16 14:15:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85893 to 85893. [2025-03-16 14:15:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85893 states, 85892 states have (on average 1.1032692218134401) internal successors, (94762), 85892 states have internal predecessors, (94762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85893 states to 85893 states and 94762 transitions. [2025-03-16 14:15:54,789 INFO L78 Accepts]: Start accepts. Automaton has 85893 states and 94762 transitions. Word has length 1435 [2025-03-16 14:15:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:15:54,790 INFO L471 AbstractCegarLoop]: Abstraction has 85893 states and 94762 transitions. [2025-03-16 14:15:54,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 2 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:15:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 85893 states and 94762 transitions. [2025-03-16 14:15:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1533 [2025-03-16 14:15:54,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:15:54,840 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:15:54,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 14:15:54,840 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:15:54,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:15:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1753002026, now seen corresponding path program 1 times [2025-03-16 14:15:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:15:54,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335890284] [2025-03-16 14:15:54,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:15:54,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:15:54,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1532 statements into 1 equivalence classes. [2025-03-16 14:15:54,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1532 of 1532 statements. [2025-03-16 14:15:54,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:15:54,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:15:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 790 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2025-03-16 14:15:56,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:15:56,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335890284] [2025-03-16 14:15:56,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335890284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:15:56,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:15:56,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 14:15:56,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45846776] [2025-03-16 14:15:56,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:15:56,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 14:15:56,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:15:56,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 14:15:56,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:15:56,834 INFO L87 Difference]: Start difference. First operand 85893 states and 94762 transitions. Second operand has 6 states, 6 states have (on average 190.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:16:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:16:00,376 INFO L93 Difference]: Finished difference Result 175057 states and 192849 transitions. [2025-03-16 14:16:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:16:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 190.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 1532 [2025-03-16 14:16:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:16:00,460 INFO L225 Difference]: With dead ends: 175057 [2025-03-16 14:16:00,460 INFO L226 Difference]: Without dead ends: 89165 [2025-03-16 14:16:00,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-16 14:16:00,500 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 1535 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 7540 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 7550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 7540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:16:00,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 1835 Invalid, 7550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 7540 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-16 14:16:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89165 states. [2025-03-16 14:16:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89165 to 86711. [2025-03-16 14:16:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86711 states, 86710 states have (on average 1.1023642025141276) internal successors, (95586), 86710 states have internal predecessors, (95586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:16:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86711 states to 86711 states and 95586 transitions. [2025-03-16 14:16:01,229 INFO L78 Accepts]: Start accepts. Automaton has 86711 states and 95586 transitions. Word has length 1532 [2025-03-16 14:16:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:16:01,230 INFO L471 AbstractCegarLoop]: Abstraction has 86711 states and 95586 transitions. [2025-03-16 14:16:01,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:16:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 86711 states and 95586 transitions. [2025-03-16 14:16:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2025-03-16 14:16:01,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:16:01,281 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:16:01,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 14:16:01,281 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:16:01,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:16:01,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1570115866, now seen corresponding path program 1 times [2025-03-16 14:16:01,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:16:01,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081760791] [2025-03-16 14:16:01,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:16:01,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:16:01,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1536 statements into 1 equivalence classes. [2025-03-16 14:16:01,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1536 of 1536 statements. [2025-03-16 14:16:01,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:16:01,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:16:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 1473 proven. 89 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2025-03-16 14:16:03,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:16:03,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081760791] [2025-03-16 14:16:03,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081760791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:16:03,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545659646] [2025-03-16 14:16:03,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:16:03,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:16:03,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:16:03,681 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) [2025-03-16 14:16:03,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 14:16:03,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1536 statements into 1 equivalence classes. [2025-03-16 14:16:04,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1536 of 1536 statements. [2025-03-16 14:16:04,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:16:04,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:16:04,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:16:04,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:16:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 1597 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2025-03-16 14:16:04,413 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:16:04,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545659646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:16:04,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:16:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 14:16:04,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012488920] [2025-03-16 14:16:04,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:16:04,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:16:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:16:04,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:16:04,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:16:04,417 INFO L87 Difference]: Start difference. First operand 86711 states and 95586 transitions. Second operand has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:16:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:16:06,522 INFO L93 Difference]: Finished difference Result 195507 states and 215239 transitions. [2025-03-16 14:16:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:16:06,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 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 1536 [2025-03-16 14:16:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:16:06,641 INFO L225 Difference]: With dead ends: 195507 [2025-03-16 14:16:06,641 INFO L226 Difference]: Without dead ends: 107979 [2025-03-16 14:16:06,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 1535 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:16:06,692 INFO L435 NwaCegarLoop]: 1397 mSDtfsCounter, 740 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 14:16:06,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1405 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 14:16:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107979 states. [2025-03-16 14:16:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107979 to 101435. [2025-03-16 14:16:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101435 states, 101434 states have (on average 1.0903641776918982) internal successors, (110600), 101434 states have internal predecessors, (110600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:16:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101435 states to 101435 states and 110600 transitions. [2025-03-16 14:16:07,664 INFO L78 Accepts]: Start accepts. Automaton has 101435 states and 110600 transitions. Word has length 1536 [2025-03-16 14:16:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:16:07,665 INFO L471 AbstractCegarLoop]: Abstraction has 101435 states and 110600 transitions. [2025-03-16 14:16:07,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:16:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 101435 states and 110600 transitions. [2025-03-16 14:16:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1547 [2025-03-16 14:16:07,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:16:07,719 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-16 14:16:07,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 14:16:07,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:16:07,920 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:16:07,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:16:07,921 INFO L85 PathProgramCache]: Analyzing trace with hash -294556085, now seen corresponding path program 1 times [2025-03-16 14:16:07,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:16:07,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088037739] [2025-03-16 14:16:07,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:16:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:16:08,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1546 statements into 1 equivalence classes. [2025-03-16 14:16:08,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1546 of 1546 statements. [2025-03-16 14:16:08,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:16:08,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat